半导体光催化剂的特性描述。
Characterization of semiconductor photocatalysts.
机构信息
Department of Chemistry and Biochemistry, Kent State University, Kent, Ohio 44242, USA.
出版信息
Chem Soc Rev. 2019 Oct 14;48(20):5184-5206. doi: 10.1039/c9cs00172g.
The long-standing popularity of semiconductor photocatalysis due to its great potential in a variety of applications has resulted in the creation of numerous semiconductor photocatalysts, which stimulated the development of various characterization methods. This review aims to summarize the main characterization methods for assessing the most important properties of semiconductor photocatalysts, including their chemical composition (elemental composition, and chemical state/structure), physical properties (physical structure, crystallographic properties, optical absorption, charge dynamics, defects, and colloidal and thermal stability), and band structure (band gap, band edges/band edge offsets, and Fermi level). The discussion on each of these methods starts with a concise presentation of its fundamentals followed by carefully selected examples. At the end, a chart correlating the properties of a semiconductor with its potential characterization methods as well as outlook are provided. Overall, the aim of this review article is to help materials chemists and physicists, particularly students, in selecting suitable techniques for the characterization of semiconductor photocatalysts and potentially other relevant materials.
由于在各种应用中具有巨大的潜力，半导体光催化技术长期以来一直受到人们的青睐，这导致了许多半导体光催化剂的产生，也刺激了各种表征方法的发展。本综述旨在总结评估半导体光催化剂最重要性质的主要表征方法，包括其化学组成（元素组成和化学状态/结构）、物理性质（物理结构、晶体性质、光学吸收、电荷动力学、缺陷以及胶体和热稳定性）和能带结构（带隙、能带边缘/带边偏移和费米能级）。对每种方法的讨论都是从其基本原理的简要介绍开始，然后是精心挑选的示例。最后，提供了一张图表，将半导体的性质与其潜在的表征方法以及展望相关联。总的来说，本文的目的是帮助材料化学家和物理学家，特别是学生，选择合适的技术来表征半导体光催化剂和潜在的其他相关材料。
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