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Open AccessArticle

Controlled Growth and Bandstructure Properties of One Dimensional Cadmium Sulfide Nanorods for Visible Photocatalytic Hydrogen Evolution Reaction

1
Department of Chemistry, College of Natural Science, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Korea
2
Korea Basic Science Institute, Gwahak-ro, Yuseong-gu, Daejeon 34133, Korea
*
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(4), 619; https://doi.org/10.3390/nano10040619
Received: 3 March 2020 / Revised: 19 March 2020 / Accepted: 23 March 2020 / Published: 27 March 2020
(This article belongs to the Special Issue Novel Nanomaterials for Applications in Energy and Catalysis)
One dimensional (1D) metal sulfide nanostructures are one of the most promising materials for photocatalytic water splitting reactions to produce hydrogen (H2). However, tuning the nanostructural, optical, electrical and chemical properties of metal sulfides is a challenging task for the fabrication of highly efficient photocatalysts. Herein, 1D CdS nanorods (NRs) were synthesized by a facile and low-cost solvothermal method, in which reaction time played a significant role for increasing the length of CdS NRs from 100 nm to several micrometers. It is confirmed that as the length of CdS NR increases, the visible photocatalytic H2 evolution activity also increases and the CdS NR sample obtained at 18 hr. reaction time exhibited the highest H2 evolution activity of 206.07 μmol.g−1.h−1. The higher H2 evolution activity is explained by the improved optical absorption properties, enhanced electronic bandstructure and decreased electron-hole recombination rate. View Full-Text
Keywords: CdS nanorods; solvothermal synthesis; bandstructure; photocatalytic H2 evolution; electron-hole recombination CdS nanorods; solvothermal synthesis; bandstructure; photocatalytic H2 evolution; electron-hole recombination
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MDPI and ACS Style

Chava, R.K.; Son, N.; Kim, Y.S.; Kang, M. Controlled Growth and Bandstructure Properties of One Dimensional Cadmium Sulfide Nanorods for Visible Photocatalytic Hydrogen Evolution Reaction. Nanomaterials 2020, 10, 619.

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