Highly Efficient Photocatalytic Hydrogen Production of Flower-like Cadmium Sulfide Decorated by Histidine

Scientific Reports
Qizhao WangZiqiang Lei

Abstract

Morphology-controlled synthesis of CdS can significantly enhance the efficiency of its photocatalytic hydrogen production. In this study, a novel three-dimensional (3D) flower-like CdS is synthesized via a facile template-free hydrothermal process using Cd(NO3)2•4H2O and thiourea as precursors and L-Histidine as a chelating agent. The morphology, crystal phase, and photoelectrochemical performance of the flower-like CdS and pure CdS nanocrystals are carefully investigated via various characterizations. Superior photocatalytic activity relative to that of pure CdS is observed on the flower-like CdS photocatalyst under visible light irradiation, which is nearly 13 times of pure CdS. On the basis of the results from SEM studies and our analysis, a growth mechanism of flower-like CdS is proposed by capturing the shape evolution. The imidazole ring of L-Histidine captures the Cd ions from the solution, and prevents the growth of the CdS nanoparticles. Furthermore, the photocatalytic contrast experiments illustrate that the as-synthesized flower-like CdS with L-Histidine is more stable than CdS without L-Histidine in the hydrogen generation.

References

May 25, 2004·Inorganic Chemistry·Patrick DeschampsBibudhendra Sarkar
Dec 18, 2008·Chemical Society Reviews·Akihiko Kudo, Yugo Miseki
Jan 30, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Zhou YuFengyu Qu
May 17, 2014·Chemical Communications : Chem Comm·Zheng XingLianzhou Wang

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Citations

Oct 19, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Aniruddha K KulkarniBharat B Kale
Oct 4, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Sundaram ChandrasekaranSeung Hyun Hur
Apr 15, 2021·Scientific Reports·Penumaka NagababuSadhana S Rayalu

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