Citation: Cao Xiaohu, Zang Xiangyu, Zhou Xichen, Chen Mindong, Ding Yong. Rationally designed/constructed MnO_x/WO₃ anode for photoelectrochemical water oxidation[J]. Chinese Chemical Letters, ;2018, 29(6): 811-814. doi: 10.1016/j.cclet.2017.12.010 shu

Rationally designed/constructed MnO_x/WO₃ anode for photoelectrochemical water oxidation

a.
State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
b.
Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control(AEMPC), Nanjing University of Information Science & Technology, Nanjing 210044, China

Corresponding author: Ding Yong, dingyong1@lzu.edu.cn; dingyong1973@163.com
Received Date: 11 November 2017
Revised Date: 5 December 2017
Accepted Date: 15 December 2017
Available Online: 16 June 2017

Figures(4)

Photoelectrocatalytic water splitting is an effective way to utilize the solar energy to solve the energy shortage. The valence band edge of WO₃ located at ~3 V vs. normal hydrogen electrode (NHE), which can offer enough potential to kinetically oxidize water for oxygen evolution reaction. However, water oxidation reaction kinetics is sluggish when only WO₃ is used as the photoanode. It is highly desirable to use cocatalyst to promote the kinetics. MnO_x loaded on the WO₃ photoanode through photodeposition methods improves the photoelectrochemical water oxidation performance. A maximum photocurrent density of composite photoanode is achieved with a deposition time of 3 min, which is higher than that of pristine WO₃ photoanode around 40%. MnO₂ is not only a cocatalyst for water splitting but also for improving oxidation selectivity. We tried to use two means to load MnO_x on WO₃ photoanode material. It is observed that loading a moderate amount of MnO_x on the WO₃ by photodeposition can promote the performance of the WO₃ photoanode.
- Photoelectrochemical water oxidation,
- Tungsten oxide,
- Manganese oxide,
- Photodeposition,
- Hydrothermal method
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Rationally designed/constructed MnOx/WO3 anode for photoelectrochemical water oxidation

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通讯作者: 陈斌, bchen63@163.com

Rationally designed/constructed MnO_x/WO₃ anode for photoelectrochemical water oxidation