NiS2 co-catalyst decoration on CdLa2S4 nanocrystals for efficient photocatalytic hydrogen generation under visible light irradiation
Date of Issue2013
School of Materials Science and Engineering
NiS2 nanoparticles as noble metal-free co-catalyst were deposited onto the CdLa2S4 photocatalyst through a hydrothermal process. The loading of NiS2 co-catalyst resulted in remarkable enhancement for H2 production over the CdLa2S4 photocatalyst under visible light irradiation. The optimal hybrid photocatalyst with 2 wt% NiS2 loading exhibited a H2 production rate of 2.5 mmolh-1g-1, which was more than 3 times higher than that of pristine CdLa2S4 photocatalyst. The promoted photocatalytic H2 production by NiS2 co-catalyst loading is attributed to the enhanced separation of photogenerated electrons and holes as well as the activation effect of NiS2 for H2 evolution.
DRNTU::Science::Physics::Optics and light
International journal of hydrogen energy
© 2013 Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication in International Journal of Hydrogen Energy, published by Elsevier Ltd. on behalf of Hydrogen Energy Publications, LLC. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.ijhydene.2013.03.169].