Synthesis and characterization of ZnO and TiO2 hollow spheres with enhanced photoreactivity

被引：101

作者：

Li, Xiaofang ^{[1
,2
]}

Lv, Kangle ^{[1
,2
,3
]}

Deng, Kejian ^{[1
,2
]}

Tang, Junfeng ^{[1
,2
]}

Su, Rong ^{[1
,2
]}

Sun, Jie ^{[1
,2
]}

Chen, Lianqing ^{[1
,2
]}

机构：

[1] S Cent Univ Nationalities, Key Lab Catalysis & Mat Sci, State Ethn Affairs Commiss, Wuhan 430074, Peoples R China

[2] S Cent Univ Nationalities, Minist Educ, Wuhan 430074, Peoples R China

[3] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Progressing, Wuhan 430070, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2009年 / 158卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

Photocatalytic degradation; TiO2; ZnO; Adsorption; Hollow sphere; PHOTOCATALYTIC ACTIVITY; FACILE METHOD; DEGRADATION; TITANIA; DYE; NANOPARTICLES; FABRICATION; ADSORPTION; X3B;

D O I：

10.1016/j.mseb.2008.12.036

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To study the relationship between the morphology and the photoreactivity of the catalyst, hollow spheres of two semiconductors of ZnO and TiO2 were synthesized by using sulfonated polystyrene (PS) as template. The catalyst samples were then characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), diffuse reflectance spectra (DRS), transmission electron microscopy (TEM) and N-2 sorption. Reactive brilliant red X3B, an anionic organic dye, was used in this study as a model chemical with the aim of organic pollutants control. The results show that, whatever the catalyst was, both the adsorptive ability and photoreactivity of the hollow spheres were much higher than that of nanoparticles. The adsorption and photoreactivity of ZnO hollow spheres increased by a factor of 7.36 and 4.66, respectively compared with ZnO nanoparticles, while 3.74 times increased in adsorption and 3.41 times increased in photoreactivity for TiO2 hollow spheres compared with TiO2 nanoparticles. Correlations between adsorption and photoreactivity reflected the importance of adsorption in the enhanced photoreactivity of ZnO and TiO2 hollow spheres. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：40 / 47

页数：8

共 20 条

[1] Bio-friendly synthesis of ZnO nanoparticles in aqueous solution at near-neutral pH and low temperature [J].