In Situ Construction of Bi12O17Cl2/Bi2S3 S-Scheme Heterojunctions with Enriched Oxygen Vacancies to Enhance Photocatalytic Activity

被引：0

作者：

Guo, Biao ^{[1
]}

Wang, Xianyu ^{[1
]}

Wu, Xia ^{[1
]}

Sun, Xinying ^{[1
]}

Li, Xinyuan ^{[1
]}

Liu, Xinxin ^{[1
]}

Zhou, Lijing ^{[1
]}

Zhao, Zhen ^{[1
,2
]}

机构：

[1] Shenyang Normal Univ, Inst Catalysis Energy & Environm, Coll Chem & Chem Engn, Shenyang 110034, Peoples R China

[2] China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2025年 / 64卷 / 07期

基金：

中国国家自然科学基金;

关键词：

BIVO4-AT-BI2S3; HETEROJUNCTION; BISPHENOL-A; REDUCTION; CR(VI); RICH; DEGRADATION; HETEROSTRUCTURES; PERFORMANCE; FABRICATION; EFFICIENCY;

D O I：

10.1021/acs.iecr.4c04683

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The construction of S-scheme heterojunctions with oxygen vacancies (OVs) is an effective strategy to enhance the photocatalytic activity. In this pioneering study, we successfully fabricated Bi12O17Cl2/Bi2S3 S-scheme heterojunctions with abundant OVs (ROV-BOC/BS) using an anion exchange method. The in situ growth of Bi2S3 (BS) nanorods on OVs-rich Bi12O17Cl2 (ROV-BOC) nanosheets resulted in an interconnected reticulated structure. This structure not only increased the specific surface area of the composite but also established a tightly bound heterojunction, further enhancing the OVs content in the composites. The OVs-induced defect levels provide additional channels for photogenerated charge migration. The synergy between the heterojunction and OVs improved the light absorption and carrier separation efficiency. Consequently, the optimized ROV-BOC/BS-0.1 achieved 95.52% Cr(VI) removal efficiency within 120 min, with apparent reaction rate constants 5.39 and 23.86 times higher than those of pure ROV-BOC and BS, respectively. This investigation provides crucial guidance for designing novel S-scheme heterojunction photocatalysts with abundant OVs.

引用

页码：3841 / 3855

页数：15

共 72 条

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