Hierarchical heterostructure of CdS nanoparticles sensitized electrospun TiO2 nanofibers with enhanced photocatalytic activity

被引：39

作者：

Wei, Zhendong ^{[1
]}

Li, Yue ^{[1
]}

Luo, Shenglian ^{[1
,2
]}

Liu, Chengbin ^{[1
]}

Meng, Deshui ^{[1
]}

Ding, Mingyue ^{[1
]}

Zeng, Guisheng ^{[1
]}

机构：

[1] Hunan Univ, Coll Chem & Chem Engn, State Key Laboroator Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China

[2] Nanchang Hangkong Univ, Key Lab Jiangxi Prov Ecol Diag Remediat & Pollut, Nanchang 330063, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2014年 / 122卷

基金：

中国国家自然科学基金;

关键词：

Electrospinning; Hierarchical; Photocorrosion; Photocatalysis; CdS/TiO2; nanofibers; EXPOSED; 111; FACETS; HYDROGEN-PRODUCTION; SOLAR-CELLS; FACILE SYNTHESIS; SOLID-STATE; LIGHT; NANOSTRUCTURES; FABRICATION; DEGRADATION;

D O I：

10.1016/j.seppur.2013.11.009

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

CdS nanoparticles coated on one-dimensional (1-D) TiO2 nanofibers with high photocatalytic activity, hierarchical heterostructure were successfully synthesized by a simple and practical electrospinning-assisted route. The CdS nanoparticles were dispersed within the entire surface of the as-electrospun TiO2 nanofibers, forming the hierarchical heterostructure. And, the composited nanofibers possessed extended light absorption region and lowest recombination rate of the electron-hole pairs. The removal efficiency of methyl blue (MB) over CdS/TiO2 nanofibers, CdS modified P25, TiO2 nanofibers and P25 was 80.8%, 73.4%, 72.4% and 51.2%, respectively. The highest photocatalytic activities over CdS/TiO2 nanofibers might arise from the increased surface area and the favorable electrons-transfer properties. Furthermore, the removal efficiency of MB in the present of Na2S-Na2SO3 as sacrificial agents can be improved by 120% compared to photocatalytic degradation in pure water due to the special redox capacity of suppressing photocorrosion of CdS. It is expected that the present work is notable for understanding the unique properties of the 1-D coupled nanocomposites and applying their practical application in the environmental protection issues. (C) 2014 Published by Elsevier B.V.

引用

页码：60 / 66

页数：7

共 39 条

[11] High-Efficiency, Solid-State, Dye-Sensitized Solar Cells Using Hierarchically Structured TiO2 Nanofibers [J].

Hwang, Daesub ;

Jo, Seong Mu ;

Kim, Dong Young ;

Armel, Vanessa ;

MacFarlane, Douglas R. ;

Jang, Sung-Yeon .

ACS APPLIED MATERIALS & INTERFACES, 2011, 3 (05) :1521-1527

[12] Dye-sensitized solar cells using brookite nanoparticle TiO2 films as electrodes [J].

Jiang, KJ ;

Kitamura, T ;

Yin, H ;

Ito, S ;

Yanagida, S .

CHEMISTRY LETTERS, 2002, (09) :872-873

[13] Photoelectrochemical detection of pentachlorophenol with a Multiple Hybrid CdSexTe1-x/TiO2 Nanotube Structure-Based Label-Free Immunosensor [J].

Kang, Qing ;

Yang, Lixia ;

Chen, Yufang ;

Luo, Shenglian ;

Wen, Lingfei ;

Cai, Qingyun ;

Yao, Shouzhuo .

ANALYTICAL CHEMISTRY, 2010, 82 (23) :9749-9754

[14] PRIORITY POLLUTANTS I-A PERSPECTIVE VIEW [J].

KEITH, LH ;

TELLIARD, WA .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1979, 13 (04) :416-423

[15] Photocatalytic hydrogen production by direct sun light from sulfide/sulfite solution [J].

Koca, A ;

Sahin, M .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2002, 27 (04) :363-367

[16] Structural and optical properties of electrospun TiO2 nanofibers [J].

Kumar, A. ;

Jose, R. ;

Fujihara, K. ;

Wang, J. ;

Ramakrishna, S. .

CHEMISTRY OF MATERIALS, 2007, 19 (26) :6536-6542

[17] Fabrication of titania nanofibers by electrospinning [J].

Li, D ;

Xia, YN .

NANO LETTERS, 2003, 3 (04) :555-560

[18] Optical properties and applications of hybrid semiconductor nanomaterials [J].

Li, Jinghong ;

Zhang, Jin Z. .

COORDINATION CHEMISTRY REVIEWS, 2009, 253 (23-24) :3015-3041

[19] Preparation and properties of nanostructure anatase TiO2 monoliths using 1-butyl-3-methylimidazolium tetrafluoroborate room-temperature ionic liquids as template solvents [J].

Liu, Y ;

Li, J ;

Wang, MJ ;

Li, ZY ;

Liu, HT ;

He, P ;

Yang, XR ;

Li, JH .

CRYSTAL GROWTH & DESIGN, 2005, 5 (04) :1643-1649

[20] Simultaneous detoxification of hexavalent chromium and acid orange 7 by a novel Au/TiO2 heterojunction composite nanotube arrays [J].

Luo, Shenglian ;

Xiao, Yan ;

Yang, Lixia ;

Liu, Chengbin ;

Su, Fang ;

Li, Yue ;

Cai, Qingyun ;

Zeng, Guangming .

SEPARATION AND PURIFICATION TECHNOLOGY, 2011, 79 (01) :85-91

← 1 2 3 4 →