TITLE:
Biomolecule-Assisted Synthesis of Nanocrystalline CdS and Bi2S3 for Photocatalytic Hydrogen Evolution
AUTHORS:
Caolong Li, Wei Chen, Jian Yuan, Mingxia Chen, Wenfeng Shangguan
KEYWORDS:
CdS, Bi2S3, Photocatalyst, Hydrogen Evolution, Ostwal Ripening
JOURNAL NAME:
World Journal of Nano Science and Engineering,
Vol.1 No.3,
September
29,
2011
ABSTRACT: Novel CdS and Bi2S3 hollow nanospheres were prepared by simple “one-pot” biomolecule-assisted hydrothermal method using glutathione (GSH) as sulfur source and structure-directing reagents. The single-phase CdS and Bi2S3 photocatalysts were capable of evolving H2 from aqueous solutions containing a sacrificial electron donor, under visible light irradiation (λ ≥ 420 nm) with Pt co-catalyst. A possible formation mechanism of complexation, S-C bond rupture, and spherical aggregate followed isotropic Ostwal ripening or anisotropic Ostwal ripening was proposed in this study.