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首页> 外文期刊>Catalysis science & technology >Insights into the multiple effects of oxygen vacancies on CuWO4 for photoelectrochemical water oxidation
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Insights into the multiple effects of oxygen vacancies on CuWO4 for photoelectrochemical water oxidation

机译：洞察的多个影响氧气职位空缺在CuWO4光电化学水氧化

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The multiple effects of oxygen vacancies on a CuWO4 photoanode for photoelectrochemical water oxidation are investigated. A shorter electron transfer time across the photoanode is obtained for CuWO4 with oxygen vacancies as compared to the pristine CuWO4. This provides direct evidence of the enhanced electrical conductivity for CuWO4 by oxygen vacancies. The water oxidation kinetics of CuWO4 is also found to be boosted by oxygen vacancies. This experimental result is further investigated using density functional theory calculations, which reveal that the activation barriers for H2O dehydrogenation on the surface of CuWO4 with oxygen vacancies are much lower than those of CuWO4. Interestingly, despite these advantages, oxygen vacancies are also found to be charge recombination centers on the photoanode's surface.
机译：的多个影响氧上的空缺CuWO4光电阳极光电化学水氧化了。传输时间在光电阳极与氧气CuWO4空缺相比原始CuWO4。CuWO4增强导电性通过氧空缺。CuWO4也发现了氧气职位空缺。使用密度泛函理论研究计算,表明激活水表面脱氢的壁垒与氧气的CuWO4空置率要低得多比CuWO4。优势,氧气空位也发现负责光电阳极的复合中心表面。

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