文献类型：期刊文献

英文题名：Constructing ZnIn2S4/HBIP Heterojunction for Efficient Two-Electron Oxygen Reduction Photocatalytic H2O2 Production With Enhanced Desorption Mechanism

作者：Yang, Xingzi[1];Huang, Song[1];Li, Jingjing[1];Luo, Yikun[1];Xu, Wenxin[1];Zhi, Chengxi[1];Qiu, Yihao[1];Xu, Yanxia[1]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asses, Shanghai, Peoples R China

年份：2026

外文期刊名：EUROPEAN JOURNAL OF INORGANIC CHEMISTRY

收录：;EI(收录号：20261220299049);WOS:【SCI-EXPANDED(收录号:WOS:001717828200001)】；

基金：This study was supported by National Natural Science Foundation of China (Grant 52470074).

语种：英文

外文关键词：heterojunction; hexagonal bismuth phosphate; two-electron oxygen reduction reaction

摘要：Photocatalytic production of hydrogen peroxide (H2O2) has attracted considerable attention as a green and sustainable synthesis route. Herein, a series of ZIS/HBIP type-I heterojunction composites were fabricated by depositing hexagonal bismuth phosphate (HBIP) onto flower-like ZnIn2S4 (ZIS) microspheres via a room-temperature precipitation method and applied to photocatalytic H2O2 synthesis. Under visible light in pure water, ZIS/HBIP achieved an H2O2 production rate of 955 mu mol & centerdot;g-1 & centerdot;h-1. Mechanistic investigations revealed that Fermi-level equilibration at the heterojunction effectively regulates interfacial charge distribution and utilization, thereby enhancing photochemical efficiency. Compared with pristine ZIS, the ZIS/HBIP composite exhibited an increased contact angle toward H2O2, indicating reduced interfacial affinity, which suppresses H2O2 adsorption-decomposition and promotes continuous accumulation. Rotating disk electrode (RDE) tests further confirmed that ZIS/HBIP predominantly produces H2O2 via a direct two-electron oxygen reduction pathway (2e- ORR), with markedly higher selectivity than the stepwise single-electron route. This work offers insights into the rational design of efficient and stable photocatalysts by synergistically regulating reaction pathways and product desorption behavior.