Novel high-efficiency visible-light-driven p-n heterojunction β-Bi2O3/Ag2WO4 photocatalysts

被引：10
|
作者：
Liu, Xinhe [1 ]
Kang, Yong [1 ]
Wang, Yi [1 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300350, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2022年 / 790卷
关键词：
beta-Bi2O3/Ag(2)wO(4); P-n heterojunction; Semiconductors; Photocatalyst; POLLUTANTS; REMOVAL; BI2O3;
D O I：
10.1016/j.cplett.2022.139347
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：
In this work, novel visible-light responsive beta-Bi2O3/Ag2WO4 p-n heterojunction photocatalysts were prepared by a simple in situ deposition method and characterized using XRD, FT-IR, SEM, TEM, XPS, UV-vis and PL. The uniform deposition of Ag2WO4 particles on beta-Bi2O3 flakes to form heterojunctions, exhibited excellent photo-catalytic activity for the degradation of methylene blue (MB) under visible light in 30 min. Compared with pure beta-Bi2O3 and Ag2WO4 samples, the kinetic reaction rate constant of MB degradation by beta-Bi2O3/Ag2WO4 was 48.47 times higher than that of beta-Bi2O3, and the degradation rate was as high as 98.8% with good cycling stability.
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页数：6
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