Issue 29, 2017

Biomolecule-mediated hydrothermal synthesis of polyoxoniobate–CdS nanohybrids with enhanced photocatalytic performance for hydrogen production and RhB degradation

Abstract

Using a biomolecule of L-cystine as the sulfur source and coordinating agent, polyoxoniobate–CdS nanohybrids were successfully synthesized under mild hydrothermal conditions. The adsorption of ammonium group (–NH2) in L-cystine molecular structure on the surface of CdS renders the amine-anchored CdS positively charged, which readily combines with the negatively charged polyoxoniobate clusters in terms of the electrostatic interaction. The as-obtained polyoxoniobate–CdS nanohybrids exhibit much superior activity for H2 evolution and RhB degradation under visible light as compared to the unhybridized CdS and polyoxoniobate. After co-loading Nb6 and NiS as cocatalyst, the H2-evolution activity of the nanohybrids is further increased up to 39 times as high as that of naked CdS, which can be attributed to an enhanced electron-transfer by adopting polyoxoniobate as electron-acceptor to retard the electron–hole recombination. The work may open an avenue for the green synthesis of cost-effective POMs-CdS nanohybrid photocatalysts for solar energy applications.

Graphical abstract: Biomolecule-mediated hydrothermal synthesis of polyoxoniobate–CdS nanohybrids with enhanced photocatalytic performance for hydrogen production and RhB degradation

Supplementary files

Article information

Article type
Paper
Submitted
11 May 2017
Accepted
03 Jul 2017
First published
03 Jul 2017

Dalton Trans., 2017,46, 9407-9414

Biomolecule-mediated hydrothermal synthesis of polyoxoniobate–CdS nanohybrids with enhanced photocatalytic performance for hydrogen production and RhB degradation

M. Liu, H. Chen, H. Zhao, Y. He, Y. Li, R. Wang, L. Zhang and W. You, Dalton Trans., 2017, 46, 9407 DOI: 10.1039/C7DT01729D

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