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journal article·2025-01-14

Highly Efficient Photocatalytic H2O2 Production under Ambient Conditions via Defective In2S3 Nanosheets

Jianing Chen, Fei Xue, Huiping Peng, Chih-Wen Pao, Wei-Hsiang Huang, Zhiwei Hu, Yong Xu, Xiaoqing Huang

Langmuir· Volume 41· Issue 1
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Source abstract

Abstract

Oxygen and water generating hydrogen peroxide (H 2 O 2 ) by optical drive is an extremely promising pathway, and the large amount of oxygen in air and natural sunlight illumination are excellent catalytic conditions. However, the separation efficiency of photogenerated electron–hole pairs greatly limits the photocatalytic efficiency, especially in the absence of sacrificial agents. Here, we report an In 2 S 3 nanosheet with an S vacancy (S v -In 2 S 3 ). The highest H 2 O 2 yield of S v -In 2 S 3 is 2.585 mmol g –1 h –1 under pure water, air, and sunlight ( P = 920 W/m 2 ), largely outperforming other reported photocatalysts for H 2 O 2 production. The experimental results show that the introduction of S v accelerates the separation of photogenerated electron–hole pairs and achieves efficient H 2 O 2 production through an oxygen reduction reaction. This efficient photosynthesis under ambient conditions allows solar-chemical conversion to take place in a truly cost-effective and sustainable way, opening up possibilities for practical production.
Source: openalex_inverted_index · Quality: baseline

Research context

NanomaterialsCatalysis & surfaces

OpenAlex topics: Advanced Photocatalysis Techniques · Gas Sensing Nanomaterials and Sensors · Copper-based nanomaterials and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering

Xiamen University

i-lab, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences (CAS), 398 Ruoshui Road, Suzhou 215123, China

National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu 30076, Taiwan

Max Planck Institute for Chemical Physics of Solids, Nothnitzer Strasse 40, Dresden 01187, Germany

Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM)

Funding

National Key Research and Development Program of China · Fundamental Research Funds for the Central Universities · National Natural Science Foundation of China · Xiamen University · Max-Planck-POSTECH Center for Complex Phase Material

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