Constructing the Sulfur-Doped CdO@In2O3 Nanofibers Ternary Heterojunction for Efficient Photocatalytic Hydrogen Production

An S-doped CdO@In2O3 nanofiber was successfully designed by in-situ electrospinning along and subsequent calcination treatment. Under artificial sunlight illumination, the S/CdO@In2O3-25 displayed a superior photocatalytic hydrogen evolution rate of 4564.58 μmol·g−1·h−1, with approximately 22.0 and...

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Published inNanomaterials (Basel, Switzerland) Vol. 13; no. 3; p. 401
Main Authors Zhang, Haiyan, Zhu, Zi, Yang, Min, Li, Youji, Lin, Xiao, Li, Ming, Tang, Senpei, Teng, Yuan, Kuang, Dai-Bin
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 18.01.2023
MDPI
Subjects
Alternative energy sources
Catalysts
CdO@In2O3 nanofiber
Charge transfer
Current carriers
Electronic structure
Energy resources
Ethanol
Fourier transforms
heterojunction
Heterojunctions
Hydrogen
Hydrogen evolution
Hydrogen production
in-situ electrospinning
Indium oxides
Intermediates
Lattice vacancies
Light
Morphology
Nanofibers
Photocatalysis
photocatalytic hydrogen production
Reaction intermediates
Renewable resources
S-doped
Spectrum analysis
Sulfur
Transmission electron microscopy
Beijing China
United States > US
China
Japan
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Summary:An S-doped CdO@In2O3 nanofiber was successfully designed by in-situ electrospinning along and subsequent calcination treatment. Under artificial sunlight illumination, the S/CdO@In2O3-25 displayed a superior photocatalytic hydrogen evolution rate of 4564.58 μmol·g−1·h−1, with approximately 22.0 and 1261.0-fold of those shown by the S/CdO and S/In2O3 samples, respectively. The experimental and theoretical analyses illustrate that the unique one-dimensional (1D) nanofiber morphology and rich oxygen vacancies optimized the electronic structure of the nanofibers and adsorption/desorption behaviors of reaction intermediates, contributing to the realization of the remarkable solar-to-H2 conversion efficiencies. Moreover, the staggered band structure and intimate contact heterointerfaces facilitate the formation of a type-II double charge-transfer pathway, promoting the spatial separation of photoexcited charge carriers. These results could inform the design of other advanced catalyst materials for photocatalytic reactions.
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These authors contributed equally to this work.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano13030401