Improved Photocatalytic Hydrogen Evolution of CdS Using Earth-Abundant Cocatalyst Mo2N with Rod Shape and Large Capacitance
Improved Photocatalytic Hydrogen Evolution of CdS Using Earth-Abundant Cocatalyst Mo2N with Rod Shape and Large Capacitance
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DOI：
10.1021/acssuschemeng.9b03334
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发表时间：
2019-07
影响因子：
8.4
通讯作者：
B. Ma;Jiawei Zhang;Keying Lin;Dekang Li;Yahui Liu;Xu Yang
中科院分区：
文献类型：
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作者：
B. Ma;Jiawei Zhang;Keying Lin;Dekang Li;Yahui Liu;Xu Yang
Earth-abundant catalysts (cocatalysts) for photocatalysis, photoelectrocatalysis, and electrocatalysis have attracted increased attention due to the potentially reduced cost for large-scale application. Here, we first report and demonstrate that improving the capacitance of cocatalysts of Mo2N by modifying the morphology and orientations could produce a better photocatalytic hydrogen evolution reaction (HER) activity on CdS. Among rod, sheet, and sphere shapes of Mo2N, the (111)-orientated rod h-Mo2N was found to be the most efficient. The hydrogen evolution activity of h-Mo2N/CdS is 6.1 times that of the Pt/CdS and 30.1 times that of the bare CdS. A controlling experiment showed that the superior photocatalytic HER activity can be attributed to the higher capacitance of h-Mo2N. This study opens up a pathway to develop novel cocatalysts for photocatalyst by adjusting the capacitance through morphology controls.
