Since the advent of the industrial revolution, there has been a constant need of efficient catalysts for abatement of industrial toxic pollutants. This phenomenon necessitated the development of eco-friendly, stable, and economically feasible catalytic materials like lanthanum-based perovskite-type oxides (PTOs) having well-defined crystal structure, excellent thermal, and structural stability, exceptional ionic conductivity, redox behavior, and high tunability. In this review, applicability of La-based PTOs in remediation of pollutants, including CO, NO x and VOCs was addressed. A framework for rationalizing reaction mechanism, substitution effect, preparation methods, support, and catalyst shape has been discussed. Furthermore, reactant conversion efficiencies of best PTOs have been compared with noble-metal catalysts for each application. The catalytic properties of the perovskites including electronic and structural properties have been extensively presented. We highlight that a robust understanding of electronic structure of PTOs will help develop perovskite catalysts for other environmental applications involving oxidation or redox reactions.

中文翻译：

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La基钙钛矿催化剂在环境污染修复中的作用

自工业革命以来，一直需要有效的催化剂来减少工业有毒污染物。这种现象需要开发环保、稳定且经济可行的催化材料，如镧基钙钛矿型氧化物 (PTO)，它们具有明确的晶体结构、出色的热稳定性和结构稳定性、出色的离子电导率、氧化还原行为和高可调性。在这篇综述中，基于 La 的 PTO 在污染物修复中的适用性，包括 CO、NO X 和挥发性有机化合物得到解决。讨论了使反应机理、取代效应、制备方法、载体和催化剂形状合理化的框架。此外，针对每种应用，将最佳 PTO 的反应物转化效率与贵金属催化剂进行了比较。钙钛矿的催化性能包括电子和结构性能已得到广泛介绍。我们强调，对 PTO 电子结构的深入了解将有助于开发用于涉及氧化或氧化还原反应的其他环境应用的钙钛矿催化剂。