Exploitation of piezoelectricity for enhancing photocatalytic activity of ZnO nanowires

被引：27

作者：

Chang, Jan-Hau ^{[1
]}

Lin, Heh-Nan ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 30013, Taiwan

来源：

MATERIALS LETTERS | 2014年 / 132卷

关键词：

Semiconductors; Nanocrystalline materials; Piezoelectricity; ZnO nanowire; Photocatalysis; ZINC-OXIDE NANOWIRES; SOLVOTHERMAL SYNTHESIS; GROWTH; NANOPARTICLES; PERFORMANCE; DEGRADATION; ARRAYS;

D O I：

10.1016/j.matlet.2014.06.066

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on an investigation of the photocatalytic activity of substrate-supported ZnO nanowires (NWs) with Ag modification and induced bending. By degrading a 50 mu M rhodamine B solution, it is found that the zeroth-order kinetic constant of Ag modified bent NWs is 1.4 and 2.2 times as high as that of Ag modified unbent NWs and unmodified as-grown NWs, respectively. The improvement due to bending is related to the piezoelectric property of ZnO that facilitates charge separation. The present work demonstrates the usefulness of piezoelectricity for photocatalysis. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：134 / 137

页数：4

共 19 条

[11] Enhanced photocatalytic activity of Cu-doped ZnO nanorods [J].

Mohan, Rajneesh ;

Krishnamoorthy, Karthikeyan ;

Kim, Sang-Jae .

SOLID STATE COMMUNICATIONS, 2012, 152 (05) :375-380

[12] Photocatalytic degradation of organic dyes with manganese-doped ZnO nanoparticles [J].

Ullah, Ruh ;

Dutta, Joydeep .

JOURNAL OF HAZARDOUS MATERIALS, 2008, 156 (1-3) :194-200

[13] Tunable photocurrent spectrum in well-oriented zinc oxide nanorod arrays with enhanced photocatalytic activity [J].

Wang, Geng ;

Chen, Da ;

Zhang, Hao ;

Zhang, Jin Z. ;

Li, Jinghong .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (24) :8850-8855

[14] Progress in Piezotronics and Piezo-Phototronics [J].

Wang, Zhong Lin .

ADVANCED MATERIALS, 2012, 24 (34) :4632-4646

[15] Piezoelectric nanogenerators based on zinc oxide nanowire arrays [J].

Wang, ZL ;

Song, JH .

SCIENCE, 2006, 312 (5771) :242-246

[16] Visible-light photocatalytic degradation of methylene blue with laser-induced Ag/ZnO nanoparticles [J].

Whang, Thou-Jen ;

Hsieh, Mu-Tao ;

Chen, Huang-Han .

APPLIED SURFACE SCIENCE, 2012, 258 (07) :2796-2801

[17] Photoinduced piezo-optical effect in Er doped ZnO films [J].

Williams, T. M. ;

Hunter, D. ;

Pradhan, A. K. ;

Kityk, I. V. .

APPLIED PHYSICS LETTERS, 2006, 89 (04)

[18] Solvothermal synthesis of Cr-doped ZnO nanowires with visible light-driven photocatalytic activity [J].

Wu, Changle ;

Shen, Li ;

Zhang, Yong-Cai ;

Huang, Qingli .

MATERIALS LETTERS, 2011, 65 (12) :1794-1796

[19] Flower-like ZnO-Ag2O composites: precipitation synthesis and photocatalytic activity [J].

Xu, Lingling ;

Wei, Bo ;

Liu, Weilong ;

Zhang, Hailin ;

Su, Chunyan ;

Che, Jixin .

NANOSCALE RESEARCH LETTERS, 2013, 8

← 1 2 →