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Insight into the Kinetic Influence of Oxygen Vacancies on the WO3 Photoanodes for Solar Water Oxidation
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2019-10-01 , DOI: 10.1021/acs.jpclett.9b02365
Minji Yang 1 , Huichao He 1 , Jinyan Du 1 , Huarong Peng 2 , Gaili Ke 1 , Yong Zhou 3
Affiliation  

Improvements to solar water oxidation performance for WO3 photoanodes due to oxygen vacancies have in general been ascribed to thermodynamic effects. Detailed insights into the water oxidation kinetics for WO3 photoanodes with oxygen vacancies are still lacking. Here, our experimental and computational investigations revealed that the water oxidation pathway on WO3 photoanodes with oxygen vacancies is more inclined to follow the four-hole pathway. This finding reasonably explained the common observations of higher faradaic efficiency for oxygen evolution, better stability, and faster kinetics for water oxidation usually achieved on the WO3 photoanodes with oxygen vacancies.

中文翻译:

洞察氧空位对WO 3光阳极对太阳能氧化的动力学影响的见解

由于氧空位,对WO 3光电阳极的太阳能氧化性能的改善通常归因于热力学效应。仍然缺少对具有氧空位的WO 3光阳极的水氧化动力学的详细了解。在这里,我们的实验和计算研究表明,具有氧空位的WO 3光阳极上的水氧化途径更倾向于遵循四孔途径。该发现合理地解释了通常的观察结果,即在具有氧空位的WO 3光阳极上通常可获得更高的法拉第效率的氧释放,更好的稳定性和更快的水氧化动力学。
更新日期:2019-10-02
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