Piezo-potential enhanced photocatalytic degradation of organic dye using ZnO nanowires

被引：376
|
作者：
Xue, Xinyu [1 ,2 ]
Zang, Weili [2 ]
Deng, Ping [2 ]
Wang, Qi [2 ]
Xing, Lili [2 ]
Zhang, Yan [1 ,3 ,4 ]
Wang, Zhong Lin [1 ,5 ]
机构：
[1] Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing 100083, Peoples R China
[2] Northeastern Univ, Coll Sci, Shenyang 110004, Peoples R China
[3] Lanzhou Univ, Inst Theoret Phys, Lanzhou 730000, Peoples R China
[4] Lanzhou Univ, MOE, Key Lab Magnetism & Magnet Mat, Lanzhou 730000, Peoples R China
[5] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA
来源：
NANO ENERGY | 2015年 / 13卷
基金：
中国国家自然科学基金;
关键词：
Photocatalysis; Piezoelectric; ZnO nanowires; Water pollution; FUNDAMENTAL THEORY; NANOGENERATOR; SEMICONDUCTOR; NANOPARTICLES; SURFACES; ENERGY; OXIDE;
D O I：
10.1016/j.nanoen.2015.02.029
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：
Piezoelectric semiconductors, such as wurtzite structure ZnO, GaN, and InN, have novel properties of coupling of piezoelectric and semiconductor. The piezoelectric field is created inside ZnO nanowires by applying strain. The photo-generated electrons and holes will be separated under the driving of piezoelectric field. The photocatalytic activity of ZnO nanowires for degrading methylene blue has been enhanced by the piezoelectric-driven separation of photo-generated carriers. Coupling the piezoelectric and photocatalytic properties of ZnO nanowires, a new fundamental mechanism for the degradation of organic dye has been demonstrated. (C) 2015 Elsevier Ltd. All rights reserved,
引用
收藏
页码：414 / 422
页数：9
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