### 铁基多相助催化剂光电化学水氧化研究进展

• 收稿日期:2020-09-07 录用日期:2020-10-22 发布日期:2020-10-28
• 通讯作者: 黄静伟,王其召 E-mail:huangjingwei2009@163.com;wangqizhao@163.com; qizhaosjtu@gmail.com
• 作者简介:Jingwei Huang is currently an associate professor in the school of chemistry and chemical engineering of Northwest Normal University. He obtained Ph.D. degree from Lanzhou University in 2017. Now he is mainly engaged in photoelectrocatalytic and electrocatalytic water splitting to produce hydrogen, and CO2 reduction
Prof. Qizhao Wang obtained his Ph.D. degree in engineering from Shanghai Jiaotong University. Now he is mainly engaged in the research of new energy materials (hydrogen production by photolysis of water, photoelectric conversion, electrocatalysis, CO2 photoelectric catalytic reduction), environmental catalysis and water treatment
• 基金资助:
国家自然科学基金(21663027);国家自然科学基金(21808189);国家自然科学基金(21962018);西北师范大学青年教师科研能力提升计划项目(NWNU-LKQN2020-0)

### Development of Iron-Based Heterogeneous Cocatalysts for Photoelectrochemical Water Oxidation

Yan Li, Xingsheng Hu, Jingwei Huang(), Lei Wang, Houde She, Qizhao Wang()

• Received:2020-09-07 Accepted:2020-10-22 Published:2020-10-28
• Contact: Jingwei Huang,Qizhao Wang E-mail:huangjingwei2009@163.com;wangqizhao@163.com; qizhaosjtu@gmail.com
• About author:Email: wangqizhao@163.com, qizhaosjtu@gmail.com Tel: +86-931-7972677 (Q.W.)
Email: huangjingwei2009@163.com +86-931-7972677 (J.H.)
• Supported by:
the National Natural Science Foundation of China(21663027);the National Natural Science Foundation of China(21808189);the National Natural Science Foundation of China(21962018);the Young Teachers'Research Ability Improvement Project of Northwest Normal University(NWNU-LKQN2020-0)

Abstract:

The use of fossil fuels has caused serious environmental problems such as air pollution and the greenhouse effect. Moreover, because fossil fuels are a non-renewable energy source, they cannot meet the continuously increasing demand for energy. Therefore, the development of clean and renewable energy sources is necessitated. Hydrogen energy is a clean, non-polluting renewable energy source that can ease the energy pressure of the whole society. The sunlight received by the Earth is 1.7× 1014 J in 1 s, which far exceeds the total energy consumption of humans in one year. Therefore, conversion of solar energy to valuable hydrogen energy is of significance for reducing the dependence on fossil fuels. Since Fujishima and Honda first reported on TiO2 in 1972, it has been discovered that semiconductors can generate clean, pollution-free hydrogen through water splitting driven by electricity or light. Hydrogen generated through this approach can not only replace fossil fuels but also provide environmentally friendly renewable hydrogen energy, which has attracted considerable attention. Photoelectrochemical (PEC) water splitting can use solar energy to produce clean, sustainable hydrogen energy. Because the oxygen evolution reaction (OER) over a photoanode is sluggish, the overall energy conversion efficiency is considerably low, limiting the practical application of PEC water splitting. A cocatalyst is, thus, necessary to improve PEC water splitting performance. So far, the synthesis of first-row transition-metal-based (e.g., Fe, Co, Ni, and Mn) cocatalysts has been intensively studied. Iron is earth-abundant and less toxic than other transition metals, making it a good cocatalyst. In addition, iron-based compounds exhibit the properties of a semiconductor/metal and have unique electronic structures, which can improve electrical conductivity and water adsorption. Various iron-based catalysts with high activity have been designed to improve the efficiency of PEC water oxidation. This article briefly summarizes the research progress related to the structure, synthesis, and application of iron oxyhydroxides, iron-based layered double hydroxides, and iron-based perovskites and discusses the evaluation of the performance of these cocatalysts toward photoelectrochemical water oxidation.

MSC2000:

• O649