Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 73, Issue 3, Pages 339-350Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0927-0248(01)00218-5
Keywords
photochemical energy conversion; photocatalyst; hydrogen; polysulfide; bismuth sulfide
Ask authors/readers for more resources
Films of polycrystalline Bi2S3 have been prepared onto bismuth and platinum substrates by electrodeposition from an aqueous sulfide bath. The films were thin, uniform and well adhered. Bi2S3 is a direct band gap semiconductor with a value of 1.28 eV optimally matched with the solar spectrum. The photoelectrochemical study was undertaken for the generation of hydrogen by using illuminated n-Bi2S3 particles; it was found that hydrogen evolution depends highly on the synthesis method of powder. Impregnation of platinum onto Bi2S3 shows a production enhancement of about 25%. The most active photocatalyst, prepared by a solvent thermal process and loaded with Pt in 0.1 M S2- alkaline electrolyte, yields 2.13 x 10(-2) ml mg(-1) of H-2 after 4 h of irradiation with the visible output of a 500 W halogen lamp. (C) 2002 Elsevier Science B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available