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Photocatalytic Oxygen Evolution from Water Splitting
Advanced Science ( IF 14.3 ) Pub Date : 2020-11-18 , DOI: 10.1002/advs.202002458
Sen Lin 1 , Hongwei Huang 1 , Tianyi Ma 2 , Yihe Zhang 1
Affiliation  

Photocatalytic water splitting has attracted a lot of attention in recent years, and O2 evolution is the decisive step owing to the complex four‐electrons reaction process. Though many studies have been conducted, it is necessary to systematically summarize and introduce the research on photocatalytic O2 evolution, and thus a systematic review is needed. First, the corresponding principles about O2 evolution and some urgently encountered issues based on the fundamentals of photocatalytic water splitting are introduced. Then, several types of classical water oxidation photocatalysts, including TiO2, BiVO4, WO3, α‐Fe2O3, and some newly developed ones, such as Sillén–Aurivillius perovskites, porphyrins, metal–organic frameworks, etc., are highlighted in detail, in terms of their crystal structures, synthetic approaches, and morphologies. Third, diverse strategies for O2 evolution activity improvement via enhancing photoabsorption and charge separation are presented, including the cocatalysts loading, heterojunction construction, doping and vacancy formation, and other strategies. Finally, the key challenges and future prospects with regard to photocatalytic O2 evolution are proposed. The purpose of this review is to provide a timely summary and guideline for the future research works for O2 evolution.

中文翻译:

水分解光催化析氧

光催化水分解近年来引起了广泛关注,由于复杂的四电子反应过程,O 2的析出是决定性的一步。尽管已经开展了很多研究,但有必要对光催化O 2析出的研究进行系统的总结和介绍,从而进行系统的综述。首先,基于光催化分解水的基本原理,介绍了O 2析出的相应原理和一些急需解决的问题。然后,几种经典的水氧化光催化剂,包括TiO 2、BiVO 4、WO 3α -Fe 2 O 3,以及一些新开发的光催化剂,如Sillén-Aurivillius钙钛矿、卟啉、金属有机骨架等,详细介绍了它们的晶体结构、合成方法和形态。第三,提出了通过增强光吸收和电荷分离来提高O 2析出活性的多种策略,包括助催化剂负载、异质结构建、掺杂和空位形成以及其他策略。最后,提出了光催化O 2析出的关键挑战和未来前景。本综述的目的是为今后O 2演化的研究工作提供及时的总结和指导。
更新日期:2021-01-07
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