A ZnO/ZnO:Cr isostructural nanojunction electrode for photoelectrochemical water splitting

被引：28

作者：

Shen, Shaohua ^{[1
,2
]}

Kronawitter, Coleman X. ^{[2
]}

Jiang, Jiangang ^{[1
]}

Guo, Penghui ^{[1
]}

Guo, Liejin ^{[1
]}

Mao, Samuel S. ^{[2
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Int Res Ctr Renewable Energy, Xian 710049, Shaanxi, Peoples R China

[2] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Dept Mech Engn, Environm Energy Technol Div, Berkeley, CA 94720 USA

来源：

NANO ENERGY | 2013年 / 2卷 / 05期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

ZnO nanorods; Water splitting; Photoanodes; Nanojunction; Cr doping; PHOTOCATALYTIC PROPERTIES; NANOROD ARRAYS; ZNO; CR; SPECTROSCOPY; PERFORMANCE; GENERATION; STABILITY; DESIGNS; GROWTH;

D O I：

10.1016/j.nanoen.2013.03.017

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The fabrication and photoelectrochemical characterization of a ZnO/ZnO:Cr isostructural nanojunction electrode is presented. When compared to its constituent components the isostructural nanojunction showed superior performance for water splitting under simulated solar light and visible light (lambda> 510 nm) illumination. In the engineered structure, the presence of intra-bandgap states associated with Cr impurities increases optical absorption, and the nanorod morphology provides a direct pathway for transport of photo-excited electrons to the back contact. The overall photoelectrochemical performance of the ZnO/ZnO:Cr engineered structure is relatively low, however the concept may prove to be applicable to more optimized structures or material systems. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：958 / 965

页数：8

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