A novel AgI/AgIO3 heterojunction with enhanced photocatalytic activity for organic dye removal

被引：36
作者：
Cao, Qian Wen [1 ]
Zheng, Yi Fan [2 ]
Yin, Hao Yong [3 ]
Song, Xu Chun [1 ]
机构：
[1] Fujian Normal Univ, Dept Chem, Fuzhou 350007, Peoples R China
[2] Zhejiang Univ Technol, Res Ctr Anal & Measurement, Hangzhou 310014, Zhejiang, Peoples R China
[3] Hangzhou Dianzi Univ, Inst Environm Sci & Engn, Hangzhou 310018, Zhejiang, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE | 2016年 / 51卷 / 09期
关键词：
LIGHT-DRIVEN PHOTOCATALYSTS; COMPOSITE PHOTOCATALYST; HYDROTHERMAL SYNTHESIS; TIO2; PHOTOCATALYST; FACILE FABRICATION; NANOTUBE ARRAYS; RHODAMINE-B; PHOTODEGRADATION; HYBRIDS; NANOCOMPOSITES;
D O I：
10.1007/s10853-016-9769-y
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel AgI/AgIO3 heterojunction photocatalyst was prepared through a mild ion-exchange method at room temperature. Their photocatalytic activities were assessed by the photodegradation of rhodamine B (RhB) under simulated solar light. The AgI/AgIO3 composites performed better photocatalytic activities than pure AgI and AgIO3 with 15 % AgI/AgIO3 heterojunction showing the highest photocatalytic efficiency among all the heterojunction samples. Moreover, the 15 % AgI/AgIO3 hybrid photocatalyst also showed excellent repeatability and stability during photocatalytic reaction. The improvement of photocatalytic performance can be attributed to effective separation of photoexcited electrons and holes at the interface of AgI/AgIO3 composites. Radical trap experiments determined that the O-2 center dot(-) radical was the main reactive species for the photodegradation of RhB.
引用
收藏
页码：4559 / 4565
页数：7
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