Synthesis, characterization and photocatalysis of AgAlO2/TiO2 heterojunction with sunlight irradiation

被引：31
|
作者：
Tang, Aidong [1 ]
Jia, Yanrong [1 ]
Zhang, Shiying [2 ]
Yu, Qumin [2 ]
Zhang, Xiangchao [1 ,2 ]
机构：
[1] Cent South Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
[2] Changsha Univ, Dept Biol Engn & Environm Sci, Inst New Mat, Changsha 410022, Hunan, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2014年 / 50卷
基金：
中国国家自然科学基金;
关键词：
AgAlO2/TiO2; Heterojunction; Formaldehyde; Photocatalysis; DEGRADATION; EFFICIENT; TIO2; FORMALDEHYDE; SURFACE;
D O I：
10.1016/j.catcom.2014.02.015
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：
A novel photocatalyst AgAlO2/TiO2 with a p-n heterojunction structure was synthesized through the method that combined sol-gel and ion exchange. The as-synthesized samples were characterized by XRD, SEM and UV-vis. The photocatalytic activity of as-synthesized sample was evaluated and the possible mechanism was discussed. As-synthesized AgAlO2/TiO2 (in mass ratio of 90/10) exhibited remarkably high photocatalytic activity of 97.8% in decomposing formaldehyde under sunlight irradiation for 90 min. Our work provided a basic experimental process for AgAlO2/TiO2 heterojunction and explored the connection between p-n heterojunction and photocatalysis, which will possess a broad prospect in terms of the applications in improving indoor air quality. Crown Copyright (C) 2014 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：1 / 4
页数：4
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