Enhanced photo-electrochemical activity of ZnO/Cu2S nanotube arrays photocathodes
Enhanced photo-electrochemical activity of ZnO/Cu2S nanotube arrays photocathodes
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DOI：
10.1016/j.ijhydene.2021.01.051
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发表时间：
2021-02
影响因子：
7.2
通讯作者：
Shuyi Fu;Wen-Chao Feng;Ying-Ying Jia-Ying;Tielong Deng;Wenzhong Wang;Gu-ling Zhang;Junli Fu
中科院分区：
文献类型：
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作者：
Shuyi Fu;Wen-Chao Feng;Ying-Ying Jia-Ying;Tielong Deng;Wenzhong Wang;Gu-ling Zhang;Junli Fu
首次采用简便、无封端剂的方法制备了ZnO/Cu2S纳米管阵列，并对其光电化学性能进行了系统研究。结果表明，ZnO/Cu2S 纳米管阵列实现了增强的光电化学水分解性能，并且在 0 V 电压下与 Ag/AgCl 相比，ZnO/Cu2S 的光电流密度是 ZnO 的 7.9 倍。 ZnO/Cu2S纳米管阵列的性能可以通过改变Cu2S微晶的量来调节。结果证实，ZnO/Cu2S 光电化学性能的增强是由于可见光吸收的显着改善、良好带能匹配导致的光生载流子的有效分离以及 ZnO 和 Cu2S 之间形成的 p-n 结。
ZnO/Cu2S nanotube arrays are fabricated firstly by a facile and capping-agent-free method, and the photo-electrochemical performance has been studied systematically. The results show that ZnO/Cu2S nanotube arrays achieve enhanced photo-electrochemical water splitting performance and the photocurrent densities of ZnO/Cu2S are 7.9 times than that of ZnO at 0 V versus Ag/AgCl. The performance of the ZnO/Cu2S nanotube arrays can be adjusted by changing the amount of Cu2S microcrystals. The results confirm that the enhanced photo-electrochemical performance of ZnO/Cu2S is due to the significantly improved visible light absorption, effective separation of photo-induced carriers due to the well band energy match and the formed p-n junction between ZnO and Cu2S.