The Role of Ni-Based Cocatalyst in Inhomogeneous RVO4 Photocatalyst Systems (R = Y, Gd)
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- 作者：Mitsutake Oshikiri ; Jinhua Ye ; Mauro Boero
- 刊名：Journal of Physical Chemistry C
- 出版年：2014
- 出版时间：June 19, 2014
- 年：2014
- 卷：118
- 期：24
- 页码：12845-12854
- 全文大小：661K
- 年卷期：v.118,no.24(June 19, 2014)
- ISSN：1932-7455
文摘
We extend here our inspection, via first-principles dynamical simulations supported by experiments, to the inhomogeneous photocatalytic RVO4 systems. At variance with our former paper, we limit the present analysis to the most promising photocatalysts (R = Y, Gd) for which the addition of a Ni-based cocatalyst provides the best activities. The specific role of Ni-based cocatalysts is elucidated, showing that a surface Ni doping, as opposed to a bulk one, is the most efficient way to enhance the catalytic activities of these compounds. This is a key step in the improvement of the photocatalysts and a roadmap to optimize the amount of Ni dopant needed for both hydrogen and oxygen generation.