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Article

Histidine Decorated Nanoparticles of CdS for Highly Efficient H2 Production via Water Splitting

1
Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa 992-8510, Japan
2
Faculty of Science, Yamagata University, 1-4-12 Kojiragawa-machi, Yamagata 992-8560, Japan
*
Author to whom correspondence should be addressed.
Energies 2020, 13(14), 3738; https://doi.org/10.3390/en13143738
Received: 30 June 2020 / Revised: 14 July 2020 / Accepted: 18 July 2020 / Published: 20 July 2020
(This article belongs to the Special Issue Nanotechnology for Solar Energy Conversion)
Pure cadmium sulfide and histidine decorated cadmium sulfide nanocomposites are prepared by the hydrothermal or solvothermal method. Scanning electron microscopy (SEM) analysis shows that the particle sizes of pure cadmium sulfide (pu/CdS) and histidine decorated cadmium sulfide prepared by the hydrothermal method (hi/CdS) range from 0.75 to 3.0 μm. However, when a solvothermal method is used, the particle size of histidine decorated cadmium sulfide (so/CdS) ranges from 50 to 300 nm. X-ray diffraction (XRD) patterns show that all samples (pu/CdS, hi/CdS and so/CdS) have a hexagonal wurtzite crystal structure but so/CdS has a poor crystallinity compared to the others. The as-prepared samples are applied to photocatalytic hydrogen production via water splitting and the results show that the highest H2 evolution rate for pu/CdS and hi/CdS are 1250 and 1950 μmol·g−1·h−1, respectively. On the other hand, the so/CdS sample has a rate of 6020 μmol·g−1·h−1, which is about five times higher than that of the pu/CdS sample. The increased specific surface area of so/CdS nanoparticles and effective charge separation by histidine molecules are attributed to the improved H2 evolution. View Full-Text
Keywords: photocatalysis; solar-hydrogen; biomolecules; cadmium sulfide photocatalysis; solar-hydrogen; biomolecules; cadmium sulfide
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MDPI and ACS Style

Tojo, F.; Ishizaki, M.; Kubota, S.; Kurihara, M.; Hirose, F.; Ahmmad, B. Histidine Decorated Nanoparticles of CdS for Highly Efficient H2 Production via Water Splitting. Energies 2020, 13, 3738. https://doi.org/10.3390/en13143738

AMA Style

Tojo F, Ishizaki M, Kubota S, Kurihara M, Hirose F, Ahmmad B. Histidine Decorated Nanoparticles of CdS for Highly Efficient H2 Production via Water Splitting. Energies. 2020; 13(14):3738. https://doi.org/10.3390/en13143738

Chicago/Turabian Style

Tojo, Fumiya, Manabu Ishizaki, Shigeru Kubota, Masato Kurihara, Fumihiko Hirose, and Bashir Ahmmad. 2020. "Histidine Decorated Nanoparticles of CdS for Highly Efficient H2 Production via Water Splitting" Energies 13, no. 14: 3738. https://doi.org/10.3390/en13143738

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