Synthesis of InP quantum dot decorated Bi2WO6 microspheres for the efficient photocatalytic production of hydrogen peroxide in water

IF 5.8 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Journal of Alloys and Compounds Pub Date : 2024-12-22 DOI:10.1016/j.jallcom.2024.178253
Chunyan Zhang, Xiaohong Chen, Yanmi Liu, Yi Zhao, Han Zhang, Daomei Chen, Shirong Zong, Jiaqiang Wang
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Abstract

Most photocatalysts reported to date need sacrificial agents (ethanol or methanol) to quench h+ and facilitate the reduction of O2 to H2O2. This requirement increases the cost of H2O2 production and hinders the advancement of photocatalytic technology. Exploring a novel photocatalyst without the sacrificial agents for photocatalytic production of H2O2 remains a huge challenge. In this research, we designed Indium phosphide (InP) quantum dot (QDs)-decorated bismuth tungstate (Bi2WO6) microspheres for the photocatalytic generation of H2O2 without the use of any sacrificial agents. The photocatalytic efficiency of InP/Bi2WO6 composites for H2O2 production reached 17.45 mmol g−1 h−1, which is 90.8 times and 53.6 times greater than pure InP and Bi2WO6, respectively. Furthermore, InP/Bi2WO6 composites demonstrated high photocatalytic H2O2 production efficiency when used in industrial wastewater and tap water. In addition, in-situ photocatalytic H2O2 synthesis was applied to actual coking wastewater for lowering chemical oxygen demand (COD) levels, and the removal rate was more than 60%. Remarkably, the degradation efficiency of acid orange 7 using the 3InP/Bi2WO6 sample reached 99.9%. To the best of our knowledge, no other research has reported the use of InP QDs for the photocatalytic in-situ synthesis of H2O2 in real water. This study provides valuable insights for the development of InP-based photocatalysts.
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来源期刊
Journal of Alloys and Compounds
Journal of Alloys and Compounds 工程技术-材料科学:综合
CiteScore
11.10
自引率
14.50%
发文量
5146
审稿时长
67 days
期刊介绍: The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.
期刊最新文献
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