Constructing 2D MOF/In2S3 heterojunctions for efficient solar-driven H2O2 synthesis in pure water

Existing photocatalysts face several challenges in producing hydrogen peroxide (H2O2), including low photogenerated carrier separation, the need for sacrificial agents, and the difficulty of recovering powdered samples. In this work, we achieved high-efficiency H2O2 production in pure water by const...

Full description

Saved in:
Bibliographic Details
Published inInorganic chemistry frontiers Vol. 11; no. 19; pp. 6605 - 6615
Main Authors Sa-Sa Xia, Li, Lan, Bao, Chenhao, Li, Chunyan, Wu, Jianhao, Wang, Xiaozhuo, Wang, Xusheng, Cheng-Chao, Jin, Cao, Changsheng, Chen, Zhi
Format Journal Article
LanguageEnglish
Published London Royal Society of Chemistry 24.09.2024
Subjects
Carrier recombination
Catalytic activity
Current carriers
Electric fields
Heterojunctions
Hydrogen peroxide
Hydrogen production
Photocatalysis
Photocatalysts
Recovery
Separation
Solar energy
Space charge
Thin films
Online AccessGet full text

Cover

More Information
Summary:Existing photocatalysts face several challenges in producing hydrogen peroxide (H2O2), including low photogenerated carrier separation, the need for sacrificial agents, and the difficulty of recovering powdered samples. In this work, we achieved high-efficiency H2O2 production in pure water by constructing Z-scheme heterojunctions of 2D MOF/In2S3 film, which enhanced the separation and transfer efficiency of photogenerated carriers and allowed for easy recycling. The Al/In15% composite exhibited a superior photocatalytic performance of 422.88 μmol g−1 h−1 H2O2, which is 2.44 times higher than that of pure Al-TCPP. The superior photocatalytic activity can be attributed to the heterojunction creating a built-in electric field that facilitates space charge separation and transfer, effectively inhibiting photogenerated carrier recombination. The powdered samples were loaded onto a PTFE film, which allowed for easy recovery from the photocatalytic system and demonstrated excellent stability, providing an effective strategy for recovering powder-based photocatalysts. This study provides a new approach for solving the problems of poor carrier separation capacity and the challenging recovery of photocatalysts by constructing a Z-scheme heterojunction thin film, realizing the efficient use of solar energy to produce H2O2 in pure water.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:2052-1545
2052-1553
DOI:10.1039/d4qi01706d