Preparation of Cu<sub>2</sub>O/TiO<sub>2</sub>Nanotube Arrays Heterojunction and Their Photoelectrochemical Response in Visible Light

Yu Zhang; Zhaoyue Liu; Jin Zhai

doi:10.6023/a12110915

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JOURNAL ARTICLE

Preparation of Cu₂O/TiO₂Nanotube Arrays Heterojunction and Their Photoelectrochemical Response in Visible Light

Yu Zhang Zhaoyue Liu Jin Zhai

Year: 2013 Journal: Acta Chimica Sinica Vol: 71 (5)Pages: 793-793 Publisher: Science Press

DOI: 10.6023/a12110915

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Abstract

采用阳极氧化法制备出结构规整的TiO2纳米管阵列, 然后利用电化学沉积法制备出不同电沉积时间下Cu2O/TiO2纳米管阵列异质结. 通过SEM和UV-vis对样品进行表征, 并对样品的可见光光电转换、光解水等性质进行了测试. 结果表明, Cu2O/TiO2纳米管阵列异质结体系在可见光区域有很强的吸收, TiO2与Cu2O之间形成的p-n结具有单向二级管的性质, 能有效降低光生电子-空穴对的重组, 提高光致电荷分离及电子-空穴对的迁移率. 当电沉积时间为30 min时, Cu2O/TiO2纳米管阵列异质结(Cu2O/TiO2NTs-30)表现出最优的可见光光电响应性质. 虽然与TiO2纳米管相比, Cu2O/TiO2NTs-30的开路电压减少了0.046 V, 但短路电流却提高了4.5倍, 最大吸收波长处光电转换效率提高了近6倍.

Keywords:

Chemistry Heterojunction Visible spectrum Optoelectronics Photoelectrochemistry Nanotechnology Electrochemistry Electrode Physical chemistry

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Copper-based nanomaterials and applications

Physical Sciences → Materials Science → Materials Chemistry

Advanced Photocatalysis Techniques

Physical Sciences → Energy → Renewable Energy, Sustainability and the Environment

ZnO doping and properties

Physical Sciences → Materials Science → Materials Chemistry

Preparation of Cu₂O/TiO₂Nanotube Arrays Heterojunction and Their Photoelectrochemical Response in Visible Light

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