Biomolecule-mediated hydrothermal synthesis of polyoxoniobate–CdS nanohybrids with enhanced photocatalytic performance for hydrogen production and RhB degradation. Issue 29 (11th July 2017)

• Record Type: Journal Article
• Authors: Liu, Meiying; Chen, Hong; Zhao, Hongmei; He, Yunfei; Li, Yunhe; Wang, Ran; Zhang, Lancui; You, Wansheng
• Is Part Of: Dalton transactions. Volume 46:Issue 29(2017)
• Page Start: 9407
• Page End: 9414
• Publication Date: 2017-07-11
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c7dt01729d
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : NiS/Nb6 –CdS nanohybrid synthesized by a mildl -cystine-mediated hydrothermal strategy demonstrates an enhanced H2 -evolution activity under visible light irradiation, which exceeds that of bare CdS by a factor of 39. Abstract : Using a biomolecule ofl -cystine as the sulfur source and coordinating agent, polyoxoniobate–CdS nanohybrids were successfully synthesized under mild hydrothermal conditions. The adsorption of ammonium group (–NH2 ) inl -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.