Construction of Z-scheme type CdS-Au-TiO2 hollow nanorod arrays with enhanced photocatalytic activity

被引：183

作者：

Zhu, Haiming ^{[1
]}

Yang, Beifang ^{[1
]}

Xu, Jiao ^{[1
]}

Fu, Zhengping ^{[1
]}

Wen, Meiwang ^{[1
]}

Guo, Ting ^{[1
]}

Fu, Shenquan ^{[2
]}

Zuo, Jian ^{[2
]}

Zhang, Shuyuan ^{[2
]}

机构：

[1] Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, Struct Res Lab, Hefei 230026, Anhui, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2009年 / 90卷 / 3-4期

关键词：

Z-scheme; Three-component nanojunction; TiO2 hollow nanorod arrays; Photocatalytic; Photodeposition; TITANIA NANOTUBE-ARRAYS; THIN-FILMS; HETEROGENEOUS PHOTOCATALYSIS; NANOWIRE ARRAYS; TIO2; CDS; PHOTOLUMINESCENCE; SEMICONDUCTOR; WATER; SIZE;

D O I：

10.1016/j.apcatb.2009.04.006

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 Z-scheme type CdS-Au-TiO2 hollow nanorod arrays have been constructed on glass substrates by following these simple steps: firstly, highly ordered TiO2 hollow nanorod arrays (THNAs) were synthesized by liquid phase deposition (LPD) using ZnO nanorod arrays as templates; then both Au core and US shell nanoparticles were achieved on the THNAs by in situ photodeposition. The prepared three-component films were characterized by field-emission scanning electron microscopy (FSEM), high-resolution transmission electron microscope (HRTEM), Raman scattering and ultraviolet-visible absorption spectrum. The results showed that Au-CdS core-shell nanoparticles were well dispersed on wall of anatase THNAs from top to bottom. The three-component nanojunction system was evaluated for their photocatalytic activity through the degradation of methylene blue (MB) in aqueous solution. It was found that the CdS-Au-TiO2 three-component hollow nanorod arrays exhibited significantly enhanced photocatalytic activity compared with single (THNAs) and two components (Au-THNAs or CdS-THNAs) systems. Reasons for this enhanced photocatalytic activity were revealed by photoluminescence (PL) results of our samples. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：463 / 469

页数：7

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