Abstract
Pickering emulsions have gained increasing interest because of their unique features, including easy preparation and stability. In contrast to classical emulsions, in Pickering emulsions, the stabilisers are solid micro/nanoparticles that accumulate on the surfaces of liquid phases. In addition to their stability, Pickering emulsions are less toxic and responsive to external stimuli, which make them versatile material that can be flexibly designed for specific applications, e.g., catalysis, pharmaceuticals and new materials. The potential toxicity and adverse impact on the environment of classic emulsions is related to the extractable nature of the water emulsifier. The impacts of some emulsifiers are related to not only their chemical natures but also their stabilities; after base or acid hydrolysis, some emulsifiers can be turned into sulphates and fatty alcohols, which are dangerous to aquatic life. In this paper, recent research on Pickering emulsion preparations is reviewed, with a focus on styrene as one of the main emulsion components. Moreover, the effects of the particle type and morphology and the critical parameters of the emulsion production process on emulsion properties and applications are discussed. Furthermore, the current and prospective applications of Pickering emulsion, such as in lithium-ion batteries and new vaccines, are presented.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: This research was co-financed by the Ministry of Education and Science of Poland under grant No. DWD/3/7/2019 – 56/001.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Data availability: This article does not contain raw data.
References
Abd El-Mageed, A.I.A., Shalan, A.E., Mohamed, L.A., Essawy, H.A., Taha, F., and Dyab, A.K.F. (2021). Effect of pH and zeta potential of Pickering stabilizing magnetite nanoparticles on the features of magnetized polystyrene microspheres. Polym. Eng. Sci. 61: 234–244, https://doi.org/10.1002/pen.25571.Search in Google Scholar
Arditty, S., Whitby, C.P., Binks, B.P., Schmitt, V., and Leal-Calderon, F. (2003). Some general features of limited coalescence in solid-stabilized emulsions. Eur. Phys. J. E 11: 273–281, https://doi.org/10.1140/epje/i2003-10018-6.Search in Google Scholar PubMed
Aveyard, R. (2012). Can Janus particles give thermodynamically stable Pickering emulsions? Soft Matter 19: 5233–5240, https://doi.org/10.1039/c2sm07230k.Search in Google Scholar
Aveyard, R., Binks, B.P., and Clint, J.H. (2003). Emulsions stabilised solely by colloidal particles. Adv. Colloid Interface Sci. 100–102: 503–546, https://doi.org/10.1016/s0001-8686(02)00069-6.Search in Google Scholar
Bago Rodriguez, A.M. and Binks, B.P. (2019). Capsules from Pickering emulsion templates. Curr. Opin. Colloid Interface Sci. 44: 107–129, https://doi.org/10.1016/j.cocis.2019.09.006.Search in Google Scholar
Bakeshlou, Z. and Nikfarjam, N. (2020). Thermoregulating papers containing fabricated microencapsulated phase change materials through Pickering emulsion templating. Ind. Eng. Chem. Res. 59: 20253–20268, https://doi.org/10.1021/acs.iecr.0c03194.Search in Google Scholar
Binks, B.P. (2002). Particles as surfactants – similarities and differences. Curr. Opin. Colloid Interface Sci. 7: 21–41, https://doi.org/10.1016/s1359-0294(02)00008-0.Search in Google Scholar
Binks, B.P. and Lumsdon, S. O. (2000a). Influence of particle wettability on the type and stability of surfactant-free emulsions. Langmuir 16: 8622–8631, https://doi.org/10.1021/la000189s.Search in Google Scholar
Binks, B.P. and Lumsdon, S.O. (2000b). Catastrophic phase inversion of water-in-oil emulsions stabilized by hydrophobic silica. Langmuir 16: 2539–2547, https://doi.org/10.1021/la991081j.Search in Google Scholar
Binks, B.P. and Lumsdon, S.O. (2001). Pickering emulsions stabilized by monodisperse latex particles: effects of particle size. Langmuir 17: 4540–4547, https://doi.org/10.1021/la0103822.Search in Google Scholar
Binks, B.P. and Olusanya, S.O. (2018). Phase inversion of colored Pickering emulsions stabilized by organic pigment particle mixtures. Langmuir 34: 5040–5051, https://doi.org/10.1021/acs.langmuir.8b00715.Search in Google Scholar PubMed
Binks, B.P. and Whitby, C.P. (2005). Nanoparticle silica-stabilised oil-in-water emulsions: improving emulsion stability. Colloids Surf. A Physicochem. Eng. Asp. 253: 105–115, https://doi.org/10.1016/j.colsurfa.2004.10.116.Search in Google Scholar
Bon, S.A.F., Cauvin, S., and Colver, P.J. (2007). Colloidosomes as micron-sized polymerisation vessels to create supracolloidal interpenetrating polymer network reinforced capsules. Soft Matter 3: 194–199, https://doi.org/10.1039/b612066k.Search in Google Scholar PubMed
Cao, Q., Cui, Q., Yang, Y., Xu, J., Han, C., and Li, L. (2018). Graphitic carbon nitride as a distinct solid stabilizer for emulsion polymerization. Chem. Eur J. 24: 2286–2291, https://doi.org/10.1002/chem.201705885.Search in Google Scholar PubMed
Caruso, F., Spasova, M., Susha, A., Giersig, M., and Caruso, R.A. (2001). Magnetic nanocomposite particles and hollow spheres constructed by a sequential layering approach. Chem. Mater. 13: 109–116, https://doi.org/10.1021/cm001164h.Search in Google Scholar
Chan, M.H., Liu, R.S., and Hsiao, M. (2019). Graphitic carbon nitride-based nanocomposites and their biological applications: a review. Nanoscale 11: 14993–15003, https://doi.org/10.1039/c9nr04568f.Search in Google Scholar PubMed
Chen, D., Amstad, E., Zhao, C.X., Cai, L., Fan, J., Chen, Q., Hai, M., Koehler, S., Zhang, H., Liang, F., et al.. (2017). Biocompatible amphiphilic hydrogel-solid dimer particles as colloidal surfactants. ACS Nano 11: 11978–11985.10.1021/acsnano.7b03110Search in Google Scholar PubMed
Chen, T., Colver, P.J., and Bon, S.A.F. (2007). Organic-inorganic hybrid hollow spheres prepared from tio 2-stabilized Pickering emulsion polymerization. Adv. Mater. 19: 2286–2289, https://doi.org/10.1002/adma.200602447.Search in Google Scholar
Chen, W., Liu, X., Liu, Y., and Kim, H. I. (2010). Synthesis of microcapsules with polystyrene/ZnO hybrid shell by Pickering emulsion polymerization. Colloid Polym. Sci. 288: 1393–1399, https://doi.org/10.1007/s00396-010-2277-8.Search in Google Scholar
Chen, W., Luan, J., Yu, X., Wang, X., and Ke, X. (2020). Preparation of core-shell structured polystyrene @ graphene oxide composite microspheres with high adsorption capacity and its removal of dye contaminants. Environ. Technol. 42: 3840–3851, https://doi.org/10.1080/09593330.2020.1743372.Search in Google Scholar PubMed
Dedovets, D., Li, Q., Leclercq, L., Nardello-Rataj, V., Leng, J., Zhao, S., and Pera-Titus, M. (2022). Multiphase microreactors based on liquid–liquid and gas–liquid dispersions stabilized by colloidal catalytic particles. Angew. Chem., Int. Ed. 61, https://doi.org/10.1002/ange.202107537.Search in Google Scholar
Demina, P.A., Grigoriev, D.O., Kuz’micheva, G.M., and Bukreeva, T.V. (2017). Preparation of Pickering-emulsion-based capsules with shells composed of titanium dioxide nanoparticles and polyelectrolyte layers. Colloid J. 79: 198–203, https://doi.org/10.1134/s1061933x1702003x.Search in Google Scholar
Dickinson, E. (2012). Use of nanoparticles and microparticles in the formation and stabilization of food emulsions. Trends Food Sci. Technol. 24: 4–12, https://doi.org/10.1016/j.tifs.2011.09.006.Search in Google Scholar
Dreyer, D.R., Park, S., Bielawski, C.W., and Ruoff, R.S. (2010). The chemistry of graphene oxide. Chem. Soc. Rev. 39: 228–240, https://doi.org/10.1039/b917103g.Search in Google Scholar PubMed
Dugyala, V.R., Daware, S.V., and Basavaraj, M.G. (2013). Shape anisotropic colloids: synthesis, packing behavior, evaporation driven assembly, and their application in emulsion stabilization. Soft Matter 9: 6711–6725, https://doi.org/10.1039/c3sm50404b.Search in Google Scholar
Duncan, B., Li, X., Landis, R.F., Kim, S.T., Gupta, A., Wang, L.S., Ramanathan, R., Tang, R., Boerth, J.A., and Rotello, V.M. (2015). Nanoparticle-stabilized capsules for the treatment of bacterial biofilms. ACS Nano 9: 7775–7782, https://doi.org/10.1021/acsnano.5b01696.Search in Google Scholar PubMed PubMed Central
Fershtat, L.L. and Makhova, N.N. (2020). 1,2,5-oxadiazole-based high-energy-density materials: synthesis and performance. ChemPlusChem 85: 13–42.10.1002/cplu.201900542Search in Google Scholar
Fielding, L.A., Tonnar, J., and Armes, S.P. (2011). All-acrylic film-forming colloidal polymer/silica nanocomposite particles prepared by aqueous emulsion polymerization. Langmuir 27: 11129–11144.10.1021/la202066nSearch in Google Scholar PubMed
Frelichowska, J., Bolzinger, M.A., Pelletier, J., Valour, J.P., and Chevalier, Y. (2009). Topical delivery of lipophilic drugs from o/w Pickering emulsions. Int. J. Pharm. 371: 56–63, https://doi.org/10.1016/j.ijpharm.2008.12.017.Search in Google Scholar PubMed
Frelichowska, J., Bolzinger, M.A., and Chevalier, Y. (2010). Effects of solid particle content on properties of o/w Pickering emulsions. J. Colloid Interface Sci. 351: 348–356, https://doi.org/10.1016/j.jcis.2010.08.019.Search in Google Scholar PubMed
Gálvez-Vergara, A., Fresco-Cala, B., and Cárdenas, S. (2020). Switchable Pickering emulsions stabilized by polystyrene-modified magnetic nanoparticles. Colloids Surf. A Physicochem. Eng. Asp. 606: 125462, https://doi.org/10.1016/j.colsurfa.2020.125462.Search in Google Scholar
Geim, A.K. and Novoselov, K.S. (2007). The rise of graphene. Nat. Mater. 6: 183–191, https://doi.org/10.1038/nmat1849.Search in Google Scholar PubMed
Ghadimi, M., Zangenehtabar, S., and Homaeigohar, S. (2020). An overview of the water remediation potential of nanomaterials and their ecotoxicological impacts. Water 12: 1150, https://doi.org/10.3390/w12041150.Search in Google Scholar
Graham, M., Smith, J., Bilton, M., Shchukina, E., Novikov, A.A., Vinokurov, V., and Shchukin, D.G. (2020). Highly stable energy capsules with nano-SiO2 Pickering shell for thermal energy storage and release. ACS Nano 14Z: 8894–8901, https://doi.org/10.1021/acsnano.0c03706.Search in Google Scholar PubMed PubMed Central
Gudarzi, M.M. and Sharif, F. (2011). Self assembly of graphene oxide at the liquid-liquid interface: a new route to the fabrication of graphene based composites. Soft Matter 7: 3432–3440, https://doi.org/10.1039/c0sm01311k.Search in Google Scholar
Han, C., Cui, Q., Meng, P., Waclawik, E.R., Yang, H., and Xu, J. (2018). Direct observation of carbon nitride-stabilized Pickering emulsions. Langmuir 34: 10135–10143.10.1021/acs.langmuir.8b02347Search in Google Scholar PubMed
Hao, Y., Liu, Y., Yang, R., Zhang, X., Liu, J., and Yang, H. (2018). A ph-responsive TiO2-based Pickering emulsion system for in situ catalyst recycling. Chin. Chem. Lett. 29: 778–782, https://doi.org/10.1016/j.cclet.2018.01.010.Search in Google Scholar
He, Y., Wu, F., Sun, X., Li, R., Guo, Y., Li, C., Zhang, L., Xing, F., Wang, W., and Gao, J. (2013). Factors that affect Pickering emulsions stabilized by graphene oxide. ACS Appl. Mater. Interfaces 5: 4843–4855, https://doi.org/10.1021/am400582n.Search in Google Scholar PubMed
Hu, C., Lin, Y.R., and Yang, H.C. (2019a). Recent developments in graphitic carbon nitride based hydrogels as photocatalysts. ChemSusChem 12: 1794–1806, https://doi.org/10.1002/cssc.201802257.Search in Google Scholar PubMed
Hu, H., Tao, B., He, Y., and Zhou, S. (2019b). Effect of conductive carbon black on mechanical properties of aqueous polymer binders for secondary battery electrode. Polymers 11: 1500, https://doi.org/10.3390/polym11091500.Search in Google Scholar PubMed PubMed Central
Huang, C., Cui, M., Sun, Z., Liu, F., Helms, B.A., and Russell, T.P. (2017). Self-regulated nanoparticle assembly at liquid/liquid interfaces: a route to adaptive structuring of liquids. Langmuir 33: 7994–8001.10.1021/acs.langmuir.7b01685Search in Google Scholar PubMed
Huo, W., Zhang, X., Gan, K., Li, H., Yan, S., Chen, Y., and Yang, J. (2019). Ceramic particle-stabilized foams/emulsions with uv light response and further synthesis of ceramic capsules. Chem. Eng. J. 360: 1459–1467, https://doi.org/10.1016/j.cej.2018.10.172.Search in Google Scholar
In Het Panhuis, M. and Paunov, V.N. (2005). Assembling carbon nanotubosomes using an emulsion-inversion technique. Chem. Commun. 13: 1726–1728, https://doi.org/10.1039/b417901c.Search in Google Scholar PubMed
Jiang, F., Wang, X., and Wu, D. (2016). Magnetic microencapsulated phase change materials with an organo-silica shell: design, synthesis and application for electromagnetic shielding and thermal regulating polyimide films. Energy 98: 225–239, https://doi.org/10.1016/j.energy.2016.01.008.Search in Google Scholar
Jiang, H., Hong, L., Li, Y., and Ngai, T. (2018). All-silica submicrometer colloidosomes for cargo protection and tunable release. Angew. Chem., Int. Ed. 57: 11662–11666, https://doi.org/10.1002/ange.201805968.Search in Google Scholar
Jiang, H., Sheng, Y., and Ngai, T. (2020). Pickering emulsions: versatility of colloidal particles and recent applications. Curr. Opin. Colloid Interface Sci. 49: 1–15, https://doi.org/10.1016/j.cocis.2020.04.010.Search in Google Scholar PubMed PubMed Central
Kalashnikova, I., Bizot, H., Cathala, B., and Capron, I. (2011). New Pickering emulsions stabilized by bacterial cellulose nanocrystals. Langmuir 27: 7471–7479, https://doi.org/10.1021/la200971f.Search in Google Scholar PubMed
Kim, D., Kim, H.J., Kim, H., and Chang, J.Y. (2021). Functional hierarchical pores in polymer monoliths: macromolecular synthesis and selective removal of dyes. ACS Appl. Polym. Mater. 3: 1385–1394, https://doi.org/10.1021/acsapm.0c01241.Search in Google Scholar
Kim, J., Cote, L.J., Kim, F., Yuan, W., Shull, K.R., and Huang, J. (2010). Graphene oxide sheets at interfaces. J. Am. Chem. Soc. 132: 8180–8186, https://doi.org/10.1021/ja102777p.Search in Google Scholar PubMed
Lazaroiu, G., Pop, E., Negreanu, G., Pisa, I., Mihaescu, L., Bondrea, A., and Berbece, V. (2017). Biomass combustion with hydrogen injection for energy applications. Energy 127: 351–357, https://doi.org/10.1016/j.energy.2017.03.133.Search in Google Scholar
Lee, D. and Weitz, D.A. (2009). Nonspherical colloidosomes with multiple compartments from double emulsions. Small 5: 1932–1935, https://doi.org/10.1002/smll.200900357.Search in Google Scholar PubMed
Leong, J.Y., Tey, B.T., Tan, C.P., and Chan, E.S. (2015). Nozzleless fabrication of oil-core biopolymeric microcapsules by the interfacial gelation of pickering emulsion templates. ACS Appl. Mater. Interfaces 7: 16169–16176, https://doi.org/10.1021/acsami.5b04486.Search in Google Scholar PubMed
Leunissen, M.E., Van Blaaderen, A., Hollingsworth, A.D., Sullivan, M.T., and Chaikin, P.M. (2007). Electrostatics at the oil-water interface, stability, and order in emulsions and colloids. Proc. Natl. Acad. Sci. U.S.A. 104: 2585–2590, https://doi.org/10.1073/pnas.0610589104.Search in Google Scholar PubMed PubMed Central
Li, H., Chen, L., Li, X., Sun, D., and Zhang, H. (2022). Recent progress on asymmetric carbon- and silica-based nanomaterials: from synthetic strategies to their applications. Nano-Micro Lett. 14, https://doi.org/10.1007/s40820-021-00789-y.Search in Google Scholar PubMed PubMed Central
Li, J. and Stöver, H.D.H. (2010). Pickering emulsion templated layer-by-layer assembly for making microcapsules. Langmuir 26: 15554–15560, https://doi.org/10.1021/la1020498.Search in Google Scholar PubMed
Li, J., Bai, H., Li, X., Li, W., Zhai, J., Li, M., and Xi, G. (2018). Hierarchical porous carbon microspheres with superhydrophilic surface for efficient adsorption and detection of water-soluble contaminants. J. Mater. Chem. 6: 12153–12161, https://doi.org/10.1039/c8ta02143k.Search in Google Scholar
Li, M., Harbron, R.L., Weaver, J.V.M., Binks, B.P., and Mann, S. (2013). Electrostatically gated membrane permeability in inorganic protocells. Nat. Chem. 5: 529–536, https://doi.org/10.1038/nchem.1644.Search in Google Scholar PubMed
Li, S., Moosa, B.A., Croissant, J.G., and Khashab, N.M. (2015). Electrostatic assembly/disassembly of nanoscaled colloidosomes for light-triggered cargo release. Angew. Chem., Int. Ed. 54: 6804–6808, https://doi.org/10.1002/ange.201501615.Search in Google Scholar
Liu, K., Jiang, J., Cui, Z., and Binks, B.P. (2017). pH-Responsive Pickering emulsions stabilized by silica nanoparticles in combination with a conventional zwitterionic surfactant. Langmuir 33: 2296–2305, https://doi.org/10.1021/acs.langmuir.6b04459.Search in Google Scholar PubMed
Lu, X., Zhang, H., Li, Y., and Huang, Q. (2018). Fabrication of milled cellulose particles-stabilized Pickering emulsions. Food Hydrocolloids 77: 427–435, https://doi.org/10.1016/j.foodhyd.2017.10.019.Search in Google Scholar
Lu, Y., Yanguang, G., Xiuli, Y., Shaoqin, L., and Zhifei, D. (2008). Novel hollow microcapsules based on iron-heparin complex multilayers. Langmuir 24: 13723–13729, https://doi.org/10.1021/la802611b.Search in Google Scholar PubMed
Luo, Q., Wei, P., Huang, Q., Gurkan, B., and Pentzer, E.B. (2018). Carbon capsules of ionic liquid for enhanced performance of electrochemical double-layer capacitors. ACS Appl. Mater. Interfaces 10: 16707–16714, https://doi.org/10.1021/acsami.8b01285.Search in Google Scholar PubMed
Luo, Q., Wang, Y., Chen, Z., Wei, P., Yoo, E., and Pentzer, E. (2019). Pickering emulsion-templated encapsulation of ionic liquids for contaminant removal. ACS Appl. Mater. Interfaces 11: 9612–9620, https://doi.org/10.1021/acsami.8b21881.Search in Google Scholar PubMed
Madivala, B., Fransaer, J., and Vermant, J. (2009). Self-assembly and rheology of ellipsoidal particles at interfaces. Langmuir 25: 2718–2728, https://doi.org/10.1021/la803554u.Search in Google Scholar PubMed
Marquis, M., Alix, V., Capron, I., Cuenot, S., and Zykwinska, A. (2016). Microfluidic encapsulation of Pickering oil microdroplets into alginate microgels for lipophilic compound delivery. ACS Biomater. Sci. Eng. 2: 535–543, https://doi.org/10.1021/acsbiomaterials.5b00522.Search in Google Scholar PubMed
Ming, Y., Xia, Y., and Ma, G. (2022). Aggregating particles on the O/W interface: tuning Pickering emulsion for the enhanced drug delivery systems. Aggregate 3, https://doi.org/10.1002/agt2.162.Search in Google Scholar
Muthuraman, G. and Teng, T.T. (2009). Extraction and recovery of rhodamine B, methyl violet and methylene blue from industrial wastewater using D2EHPA as an extractant. J. Ind. Eng. Chem. 15: 841–846, https://doi.org/10.1016/j.jiec.2009.09.010.Search in Google Scholar
Muzyka, R., Drewniak, S., Pustelny, T., Sajdak, M., and Drewniak, Ł. (2021). Characterization of graphite oxide and reduced graphene oxide obtained from different graphite precursors and oxidized by different methods using Raman spectroscopy statistical analysis. Materials 14: 1–14, https://doi.org/10.3390/ma14040769.Search in Google Scholar PubMed PubMed Central
Mwangi, W.W., Ho, K.W., Ooi, C.W., Tey, B.T., and Chan, E.S. (2016). Facile method for forming ionically cross-linked chitosan microcapsules from pickering emulsion templates. Food Hydrocolloids 55: 26–33, https://doi.org/10.1016/j.foodhyd.2015.10.022.Search in Google Scholar
Nan, F., Wu, J., Qi, F., Liu, Y., Ngai, T., and Ma, G. (2014). Uniform chitosan-coated alginate particles as emulsifiers for preparation of stable Pickering emulsions with stimulus dependence. Colloids Surf. A Physicochem. Eng. Asp. 456: 246–252, https://doi.org/10.1016/j.colsurfa.2014.05.017.Search in Google Scholar
Naseri, A., Samadi, M., Pourjavadi, A., Moshfegh, A.Z., and Ramakrishna, S. (2017). Graphitic carbon nitride (g-C3N4)-based photocatalysts for solar hydrogen generation: recent advances and future development directions. J. Mater. Chem. A 5: 23406–23433, https://doi.org/10.1039/c7ta05131j.Search in Google Scholar
Norton, J.E. and Norton, I.T. (2010). Designer colloids – towards healthy everyday foods? Soft Matter 6: 3735–3742, https://doi.org/10.1039/c001018a.Search in Google Scholar
Phan-Quang, G.C., Lee, H.K., Phang, I.Y., and Ling, X.Y. (2015). Plasmonic colloidosomes as three-dimensional SERS platforms with enhanced surface area for multiphase sub-microliter toxin sensing. Angew. Chem., Int. Ed. 54: 9691–9695, https://doi.org/10.1002/ange.201504027.Search in Google Scholar
Pickering, S.U. (1907). CXCVI. – emulsions. Transactions 91: 2001–2021, https://doi.org/10.1039/ct9079102001.Search in Google Scholar
Popadyuk, A., Popadyuk, N., Tarnavchyk, I., Voronov, S., and Voronov, A. (2015). Colloidosomes from peroxidized Pickering emulsions. Int. J. Theor. Appl. Nanotechnol. 3: 20–27, https://doi.org/10.11159/ijtan.2015.003.Search in Google Scholar
Popadyuk, N., Popadyuk, A., Tarnavchyk, I., Budishevska, O., Kohut, A., Voronov, A., and Voronov, S. (2016). Synthesis of covalently cross-linked colloidosomes from peroxidized Pickering emulsions. Coatings 6: 52, https://doi.org/10.3390/coatings6040052.Search in Google Scholar
Qi, F., Wu, J., Sun, G., Nan, F., Ngai, T., and Ma, G. (2014). Systematic studies of Pickering emulsions stabilized by uniform-sized PLGA particles: preparation and stabilization mechanism. J. Mater. Chem. B 2: 7605–7611, https://doi.org/10.1039/c4tb01165a.Search in Google Scholar PubMed
Radulova, G.M., Slavova, T.G., Kralchevsky, P.A., Basheva, E.S., Marinova, K.G., and Danov, K.D. (2018). Encapsulation of oils and fragrances by core-in-shell structures from silica particles, polymers and surfactants: the brick-and-mortar concept. Colloids Surf. A Physicochem. Eng. Asp. 559: 351–364, https://doi.org/10.1016/j.colsurfa.2018.09.079.Search in Google Scholar
Ramsden, W. (1904). Separation of solids in the surface-layers of solutions and ‘suspensions’ (observations on surface-membranes, bubbles, emulsions, and mechanical coagulation). Preliminary account. Proc. Roy. Soc. Lond 72: 156–164.10.1098/rspl.1903.0034Search in Google Scholar
Ren, G., Wang, M., Wang, L., Wang, Z., Chen, Q., Xu, Z., and Sun, D. (2018). Dynamic covalent silica nanoparticles for PH-switchable Pickering emulsions. Langmuir 34: 5798–5806, https://doi.org/10.1021/acs.langmuir.8b00757.Search in Google Scholar PubMed
Richter, A.R., Feitosa, J.P.A., Paula, H.C.B., Goycoolea, F.M., and de Paula, R.C.M. (2018). Pickering emulsion stabilized by cashew gum-poly-l-lactide copolymer nanoparticles: synthesis, characterization and amphotericin B Encapsulation. Colloids Surf. B Biointerfaces 164: 201–209, https://doi.org/10.1016/j.colsurfb.2018.01.023.Search in Google Scholar PubMed
Ruan, Q., Zeng, L., Ren, J., and Yang, X. (2018). One-step formation of a double Pickering emulsion via modulation of the oil phase composition. Food Funct. 9: 4508–4517, https://doi.org/10.1039/c8fo00937f.Search in Google Scholar PubMed
Ruiz-Rodriguez, P.E., Meshulam, D., and Lesmes, U. (2014). Characterization of Pickering O/W emulsions stabilized by silica nanoparticles and their responsiveness to in vitro digestion conditions. Food Biophys. 9: 406–415, https://doi.org/10.1007/s11483-014-9346-3.Search in Google Scholar
Schmid, A., Scherl, P., Armes, S.P., Leite, C.A.P., and Galembeck, F. (2009). Synthesis and characterization of film-forming colloidal nanocomposite particles prepared via surfactant-free aqueous emulsion copolymerization. Macromolecules 42: 3721–3728.10.1021/ma900465kSearch in Google Scholar
Schwarz, J.A., Contescu, C.I., and Lyshevski, S.E. (2013). Dekker encyclopedia of nanoscience and nanotechnology, 3rd ed. CRC Press, Boca Raton.Search in Google Scholar
Sharif, F., Arjmand, M., Moud, A.A., Sundararaj, U., and Roberts, E.P.L. (2017). Segregated hybrid poly(methyl methacrylate)/graphene/magnetite nanocomposites for electromagnetic interference shielding. ACS Appl. Mater. Interfaces 9: 14171–14179, https://doi.org/10.1021/acsami.6b13986.Search in Google Scholar PubMed
Simovic, S., Ghouchi-Eskandar, N., and Prestidge, C.A. (2011). Pickering emulsions for dermal delivery. J. Drug Deliv. Sci. Technol. 21: 123–133, https://doi.org/10.1016/s1773-2247(11)50011-5.Search in Google Scholar
Singh, K., Ohlan, A., Pham, V.H., Balasubramaniyan, R.B., Varshney, S., Jang, J., Hur, S.H., Choi, W.M., Kumar, M., Dhawan, S.K., et al.. (2013). Nanostructured graphene/Fe3O4 incorporated polyaniline as a high performance shield against electromagnetic pollution. Nanoscale 5: 2411–2420, https://doi.org/10.1039/c3nr33962a.Search in Google Scholar PubMed
Strohm, H. and Löbmaan, P. (2004). Porous TiO2 hollow spheres by liquid phase deposition on polystyrene latex-stabilised Pickering emulsions. J. Mater. Chem. 14: 2667–2673, https://doi.org/10.1039/b406842d.Search in Google Scholar
Sun, Z., Yang, C., Wang, F., Wu, B., Shao, B., Li, Z., Chen, D., Yang, Z., and Liu, K. (2020). Biocompatible and pH-responsive colloidal surfactants with tunable shape for controlled interfacial curvature. Angew. Chem. Int. Ed. 59: 9365, https://doi.org/10.1002/ange.202001588.Search in Google Scholar
Sun, Z., Yan, X., Xiao, Y., Hu, L., Eggersdorfer, M., Chen, D., Yang, Z., and Weitz, D.A. (2022). Pickering emulsions stabilized by colloidal surfactants: role of solid particles. Particuology 64: 153–163, https://doi.org/10.1016/j.partic.2021.06.004.Search in Google Scholar
Tang, C., Li, Y., Pun, J., Mohamed Osman, A.S., and Tam, K.C. (2019). Polydopamine microcapsules from cellulose nanocrystal stabilized Pickering emulsions for essential oil and pesticide encapsulation. Colloids Surf. A Physicochem. Eng. Asp. 570: 403–413, https://doi.org/10.1016/j.colsurfa.2019.03.049.Search in Google Scholar
Tang, S., Gong, J., Shi, Y., Wen, S., and Zhao, Q. (2022). Spontaneous water-on-water spreading of polyelectrolyte membranes inspired by skin formation. Nat. Commun. 13: 3227, https://doi.org/10.1038/s41467-022-30973-6.Search in Google Scholar PubMed PubMed Central
Thickett, S.C. and Zetterlund, P.B. (2015). Graphene oxide (go) nanosheets as oil-in-water emulsion stabilizers: influence of oil phase polarity. J. Colloid Interface Sci. 442: 67–74, https://doi.org/10.1016/j.jcis.2014.11.047.Search in Google Scholar PubMed
Toor, A., Feng, T., and Russell, T.P. (2016). Self-assembly of nanomaterials at fluid interfaces. Eur. Phys. J. E 39: 1–13, https://doi.org/10.1140/epje/i2016-16057-x.Search in Google Scholar PubMed
Velleman, L., Sikdar, D., Turek, V.A., Kucernak, A.R., Roser, S.J., Kornyshev, A.A., and Edel, J.B. (2016). Tuneable 2D self-assembly of plasmonic nanoparticles at liquid|liquid interfaces. Nanoscale 8: 19229–19241, https://doi.org/10.1039/c6nr05081f.Search in Google Scholar PubMed
Vignati, E., Piazza, R., and Lockhart, T.P. (2003). Pickering emulsions: interfacial tension, colloidal layer morphology, and trapped-particle motion. Langmuir 19: 6650–6656.10.1021/la034264lSearch in Google Scholar
Voorn, D.J., Ming, W., and Van Herk, A.M. (2006). Polymer-clay nanocomposite latex particles by inverse Pickering emulsion polymerization stabilized with hydrophobic montmorillonite platelets. Macromolecules 39: 2137–2143, https://doi.org/10.1021/ma052539t.Search in Google Scholar
Wang, H., Zhu, X., Tsarkova, L., Pich, A., and Möller, M. (2011). All-silica colloidosomes with a particle-bilayer shell. ACS Nano 5: 3937–3942, https://doi.org/10.1021/nn200436s.Search in Google Scholar PubMed
Wang, R., Cheng, H., Gong, Y., Wang, F., Ding, X., Hu, R., Zhang, X., He, J., and Tian, X. (2019a). Highly thermally conductive polymer composite originated from assembly of boron nitride at an oil-water interface. ACS Appl. Mater. Interfaces 11: 42818–42826, https://doi.org/10.1021/acsami.9b15259.Search in Google Scholar PubMed
Wang, X., Zhou, W., Cao, J., Liu, W., and Zhu, S. (2012). Preparation of core-shell CaCO3 capsules via Pickering emulsion templates. J. Colloid Interface Sci. 372: 24–31, https://doi.org/10.1016/j.jcis.2012.01.018.Search in Google Scholar PubMed
Wang, X., Chen, L., Sun, G., and Liu, R. (2019b). Hollow microcapsules with controlled mechanical properties templated from Pickering emulsion droplets. Macromol. Chem. Phys. 220, https://doi.org/10.1002/macp.201800395.Search in Google Scholar
Wilson, R., Li, Y., Yang, G., and Zhao, Ch. (2022). Nanoemulsions for drug delivery. Particuology 64: 85–97, https://doi.org/10.1016/j.partic.2021.05.009.Search in Google Scholar
Wu, J. and Ma, G.H. (2016). Recent studies of Pickering emulsions: particles make the difference. Small 12: 4633–4648, https://doi.org/10.1002/smll.201600877.Search in Google Scholar PubMed
Wu, Y., Shen, J., Larcinese-Hafner, V., Erni, P., and Ouali, L. (2016). Hybrid microcapsules with tunable properties: via Pickering emulsion templates for the encapsulation of bioactive volatiles. RSC Adv. 6: 102595–102602, https://doi.org/10.1039/c6ra21338c.Search in Google Scholar
Wu, Z., Li, L., Liao, T., Chen, X., Jiang, W., Luo, W., Yang, J., and Sun, Z. (2018). Janus nanoarchitectures: from structural design to catalytic applications. Nano Today 22: 62–82, https://doi.org/10.1016/j.nantod.2018.08.009.Search in Google Scholar
Xia, Y., Wei, J., Du, Y., Wan, T., Ma, X., An, W., Guo, A., Miao, C., Yue, H., Li, S., et al.. (2018). Exploiting the pliability and lateral mobility of Pickering emulsion for enhanced vaccination. Nat. Mater. 17: 187–194, https://doi.org/10.1038/nmat5057.Search in Google Scholar PubMed
Yan, S.C., Li, Z.S., and Zou, Z.G. (2009). Photodegradation performance of G-C3N4 fabricated by directly heating melamine. Langmuir 25: 10397–10401, https://doi.org/10.1021/la900923z.Search in Google Scholar PubMed
Yandrapalli, N., Robinson, T., Antonietti, M., and Kumru, B. (2020). Graphitic carbon nitride stabilizers meet microfluidics: from stable emulsions to photoinduced synthesis of hollow polymer spheres. Small 16: 2001180, https://doi.org/10.1002/smll.202001180.Search in Google Scholar PubMed
Yang, H., Zhou, T., and Zhang, W. (2013). A strategy for separating and recycling solid catalysts based on the PH-triggered Pickering-emulsion inversion. Angew. Chem. 125: 7603–7607, https://doi.org/10.1002/ange.201300534.Search in Google Scholar
Yang, T., Wei, L., Jing, L., Liang, J., Zhang, X., Tang, M., Monteiro, M.J., Chen, Y.I., Wang, Y., Gu, S., et al.. (2017a). Dumbbell-shaped bi-component mesoporous Janus solid nanoparticles for biphasic interface catalysis. Angew. Chem., Int. Ed. 56: 8459–8463, https://doi.org/10.1002/ange.201701640.Search in Google Scholar
Yang, Y., Fang, Z., Chen, X., Zhang, W., Xie, Y., Chen, Y., Liu, Z., and Yuan, W. (2017b). An overview of Pickering emulsions: solid-particle materials, classification, morphology, and applications. Front. Pharmacol. 8: 1–20, https://doi.org/10.3389/fphar.2017.00287.Search in Google Scholar PubMed PubMed Central
Yang, Z., Liu, H., Wu, S., Tang, Z., Guo, B., and Zhang, L. (2018). A green method for preparing conductive elastomer composites with interconnected graphene network via Pickering emulsion templating. Chem. Eng. J. 342: 112–119, https://doi.org/10.1016/j.cej.2018.02.079.Search in Google Scholar
Yi, H., Yang, Y., Gu, X., Huang, J., and Wang, C. (2015). Multilayer composite microcapsules synthesized by pickering emulsion templates and their application in self-healing coating. J. Mater. Chem. 3: 13749–13757, https://doi.org/10.1039/c5ta02288f.Search in Google Scholar
Zhang, G. and Wang, C. (2016). Pickering emulsion-based marbles for cellular capsules. Materials 9: 572, https://doi.org/10.3390/ma9070572.Search in Google Scholar PubMed PubMed Central
Zhang, B., Zhang, Z., Kapar, S., Ataeian, P., Da Silva Bernardes, J., Berry, R., Zhao, W., Zhou, G., and Tam, K.C. (2019). Microencapsulation of phase change materials with polystyrene/cellulose nanocrystal hybrid shell via Pickering emulsion polymerization. ACS Sustain. Chem. Eng. 7: 17756–17767, https://doi.org/10.1021/acssuschemeng.9b04134.Search in Google Scholar
Zhang, K., Wu, W., Guo, K., Chen, J.F., and Zhang, P.Y. (2009). Magnetic polymer enhanced hybrid capsules prepared from a novel Pickering emulsion polymerization and their application in controlled drug release. Colloids Surf. A Physicochem. Eng. Asp. 349: 110–116, https://doi.org/10.1016/j.colsurfa.2009.08.005.Search in Google Scholar
Zhang, K., Wang, Q., Meng, H., Wang, M., Wu, W., and Chen, J. (2014). Preparation of polyacrylamide/silica composite capsules by inverse Pickering emulsion polymerization. Particuology 14: 12–18, https://doi.org/10.1016/j.partic.2013.02.010.Search in Google Scholar
Zhang, Z., Tam, K.C., Wang, X., and Sèbe, G. (2018). Inverse Pickering emulsions stabilized by cinnamate modified cellulose nanocrystals as templates to prepare silica colloidosomes. ACS Sustain. Chem. Eng. 6: 2583–2590, https://doi.org/10.1021/acssuschemeng.7b04061.Search in Google Scholar
Zhao, Y., Li, Y., Demco, D.E., Zhu, X., and Möller, M. (2014). Microencapsulation of hydrophobic liquids in closed all-silica colloidosomes. Langmuir 30: 4253–4261, https://doi.org/10.1021/la500311y.Search in Google Scholar PubMed
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