Enhanced photocatalytic performance of Bi2O3/H-ZSM-5 composite for rhodamine B degradation under UV light irradiation

被引：41

作者：

Wang, Qizhao ^{[1
]}

Hui, Juan ^{[1
]}

Yang, Li ^{[3
]}

Huang, Haohao ^{[2
]}

Cai, Yuxia ^{[1
]}

Yin, Shuqun ^{[1
]}

Ding, Yaming ^{[1
]}

机构：

[1] Northwest Normal Univ, Coll Chem & Chem Engn, Minist Educ China,Key Lab Gansu Polymer Mat, Key Lab Ecoenvironm Related Polymer Mat, Lanzhou 730070, Peoples R China

[2] S China Univ Technol, Coll Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China

[3] Jiangsu Environm Monitoring Ctr, Nanjing 210036, Jiangsu, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2014年 / 289卷

基金：

中国国家自然科学基金;

关键词：

Bi-2; O-3/H-ZSM-5; Composites; Photodegradation; Ion-exchange; Synergistic effect; METHYL-ORANGE; DYE; DECOMPOSITION; FILMS; ACETALDEHYDE; COMBINATE; KINETICS; CARBON; WATER;

D O I：

10.1016/j.apsusc.2013.10.139

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：

Bi2O3/H-ZSM-5 composite photocatalysts were synthesized via a facile ion-exchange method. X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-vis diffuse reflectance spectroscopy (DRS) were employed to study the phase structure, morphology and optical properties of the synthesized samples. The photocatalytic activities of the samples were evaluated by photocatalytic degradation of rhodamine B (RhB) under UV light irradiation. The results showed that, at the optimal loading with 18 wt.% Bi2O3, the Bi2O3/H-ZSM-5 composite photocatalyst acquires the highest photocatalytic activity. Moreover, the kinetics of photocatalytic degradation reaction could be expressed by the first-order reaction kinetic model. The increased photocatalytic performance could be attributed to the synergistic effect between Bi2O3 and H-ZSM-5. The special structure of H-ZSM-5 increases the number of the active sites to adsorb more dye and photodegrade it on Bi2O3 photocatalyst. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：224 / 229

页数：6

共 44 条

[1] One-pot synthesis of In2S3 nanosheets/graphene composites with enhanced visible-light photocatalytic activity [J].