Abstract Tailoring semiconductor crystals with optimized reactive facets is considered one of effective strategies to improve photocatalytic activity and selectivity for energy conversion and environmental remediation. The arrangement of surface atom structure through crystal facet engineering could tune surface free energy, electronic band structure, charge transfer and separation, the reactant adsorption and product desorption, and surface redox sites. This progress report aims to concisely highlight recent state-of-the-art progress of crystal facet-dependent performance of promising photocatalysts beyond TiO2. It includes (1) design of crystal-facet exposed photocatalysts with various routes through altering the relative order of the surface energy; (2) crystal facet-based surface junctions to promote the charge transfer and separation; (3) in situ techniques to detection of charge accumulation on crystal-faceted surfaces; (4) exposed face-determined photocatalytic application in water splitting, photoreduction of CO2 into renewable fuels, degradation of organic contaminants from the point of the reactant adsorption and activation. The challenges and prospects for future development are also presented.

中文翻译：

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超越 TiO2 的晶面暴露光催化剂的最新进展：太阳能转换和环境应用的设计和相关性能

摘要 定制具有优化反应面的半导体晶体被认为是提高光催化活性和能量转换和环境修复选择性的有效策略之一。通过晶面工程排列表面原子结构可以调节表面自由能、电子能带结构、电荷转移和分离、反应物吸附和产物解吸以及表面氧化还原位点。这份进展报告旨在简明扼要地强调除 TiO2 以外的有前途的光催化剂的晶面依赖性性能的最新进展。它包括（1）通过改变表面能的相对顺序来设计具有多种途径的晶面暴露光催化剂；(2)基于晶面的表面结促进电荷转移和分离；(3) 检测晶面表面电荷积累的原位技术；(4) 暴露面决定光催化在水分解、CO2 光还原成可再生燃料、从反应物吸附和活化的角度降解有机污染物的应用。也提出了未来发展的挑战和前景。