The heterogeneous coprecipitation of nanocrystals with metals on substrates plays a significant role in both natural and engineered systems. Due to the small dimensions and thereby the large specific surface area, nanocrystal coprecipitation with metals, which is ubiquitous in natural settings, exerts drastic effects on the biogeochemical cycling of metals on the earth’s crust. Meanwhile, the controlled synthesis of nanocrystals with metal doping to achieve tunable size/composition enables their broad applications as adsorbents and catalysts in many engineered settings. Despite their importance, complex interactions among aqueous ions/polymers, nanocrystals, substrates, and metals are far from being well-understood, leaving the controlling mechanisms for nanocrystal formation with metals on substrates uncovered.

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纳米晶与金属在基底上的非均相共沉淀

纳米晶体与基底上的金属的非均相共沉淀在天然和工程系统中都发挥着重要作用。由于尺寸小，因而比表面积大，自然环境中普遍存在的纳米晶体与金属的共沉淀对地壳上金属的生物地球化学循环产生巨大影响。同时，通过金属掺杂控制合成纳米晶体以实现可调的尺寸/成分，使其能够在许多工程环境中作为吸附剂和催化剂得到广泛应用。尽管它们很重要，但水性离子/聚合物、纳米晶体、基底和金属之间的复杂相互作用还远未得到充分理解，使得基底上的金属形成纳米晶体的控制机制尚未被发现。