Synthesis and characterization of Ag/Ag3PO4 nanomaterial modified BiPO4 photocatalyst by sonochemical method and its photocatalytic application

被引：15
|
作者：
Chen, Yen-Jui [1 ]
Tseng, Chi-Shun [1 ]
Tseng, Po-Jen [1 ]
Huang, Chang-Wei [1 ]
Wu, Tsunghsueh [2 ]
Lin, Yang-Wei [1 ]
机构：
[1] Natl Changhua Univ Educ, Dept Chem, Changhua, Taiwan
[2] Univ Wisconsin Platteville, Dept Chem, Platteville, WI USA
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2017年 / 28卷 / 16期
关键词：
HIGHLY EFFICIENT; SILVER NANOPARTICLES; ORGANIC POLLUTANTS; DEGRADATION; AG3PO4; PERFORMANCE; STABILITY; WATER; PHOTODEGRADATION; HETEROSTRUCTURES;
D O I：
10.1007/s10854-017-6997-0
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Ag/Ag3PO4 nanomaterial modified BiPO4 photocatalysts (Ag/Ag3PO4/BiPO4) were synthesized by sonochemical method. The BiPO4 and Ag/Ag3PO4/BiPO4 photocatalysts were characterized by XRD, UV-Vis DRS, Raman, and TEM analysis. The photocatalytic activity of the prepared heterostructures was studied through the photodegradation of methylene blue (MB) under visible-light irradiation (lambda > 420 nm, 70 W/cm(2)). The photodegradation of MB was found to be follow pseudo-first-order kinetics. The antimicrobial activity of the prepared heterostructures has also been evaluated in the disinfection of pathogens (Escherichia coli and Staphylococcus aureus). The prepared Ag/Ag3PO4/BiPO4 photocatalysts displayed considerably higher photocatalytic activity (> 99% degradation within 25 min and > 99% disinfection within 20 min) than did pure BiPO4. This enhanced photocatalytic activity of the Ag/Ag3PO4/BiPO4 photocatalysts can be attributed to the high separation efficiency and low recombination rate of photogenerated electron-hole pairs, as well as the Ag+ ions release under visible light irradiation. The possible mechanism underlying the enhanced photocatalytic activities of the Ag/Ag3PO4/BiPO4 photocatalysts is also provided.
引用
收藏
页码：11886 / 11899
页数：14
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