ZnO/CuInS₂ core/shell heterojunction nanoarray for photoelectrochemical water splitting

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• 作者：Yabin Li ; Zhifeng Liu ; Yun Wang ; Zhichao Liu ; Jianhua Han ; Jing Ya
• 关键词：ZnO ; CuInS2 ; Core/shell ; Heterojunction ; Water splitting
• 刊名：International Journal of Hydrogen Energy
• 出版年：2012
• 出版时间：October, 2012
• 年：2012
• 卷：37
• 期：20
• 页码：15029-15037
• 全文大小：1032 K

文摘

ZnO/CuInS₂ core/shell nanorods array thin film was synthesized on conducting glass substrates for photoelectrochemical water splitting via a simple hydrothermal and cation exchange reaction, using ZnO nanorods array as reactive template. Uniform CuInS₂ films were obtained on the surface of ZnO nanorods, based on the ion-by-ion growth mechanism. The optical property of core/shell nanoarray was characterized, and enhanced absorption spectrum was observed. Hydrogen generation efficiency of 3.2 % at 0.29?V versus saturated calomel electrode was achieved with synthesized ZnO/CuInS₂ core/shell nanoarray electrode due to the improved absorption and appropriate energy gap structure. The synthesized core/shell nanoarray has potential application in photoelectrochemical water splitting.