Hydrogen photoproduction from hydrogen sulfide on Bi{sub 2}S{sub 3} catalyst Bessekhouad, Y; Trari, M [Laboratoire de Stockage et de Valorisation des Energies Renouvelables, Faculte de Chimie, USTHB B.P. 32 Algiers (Algeria)]; Mohammedi, M [Ecole Polytechnique EMP,BP 17 Algiers (Algeria)] 14 SOLAR ENERGY; HYDROGEN PRODUCTION; PHOTOPRODUCTION; HYDROGEN SULFIDES; BISMUTH SULFIDES; CATALYSTS; POLYCRYSTALS; PLATINUM; IMPREGNATION Films of polycrystalline Bi{sub 2}S{sub 3} have been prepared onto bismuth and platinum substrates by electrodeposition from an aqueous sulfide bath. The films were thin, uniform and well adhered. Bi{sub 2}S{sub 3} is a direct band gap semiconductor with a value of 1.28eV optimally matched with the solar spectrum. The photoelectrochemical study was undertaken for the generation of hydrogen by using illuminated n-Bi{sub 2}S{sub 3} particles; it was found that hydrogen evolution depends highly on the synthesis method of powder. Impregnation of platinum onto Bi{sub 2}S{sub 3} shows a production enhancement of about 25%. The most active photocatalyst, prepared by a solvent thermal process and loaded with Pt in 0.1MS{sup 2-} alkaline electrolyte, yields 2.13x10{sup -2}mlmg{sup -1} of H{sub 2} after 4h of irradiation with the visible output of a 500W halogen lamp. Netherlands 2002-07-01 English Journal Article Journal Name: Solar Energy Materials and Solar Cells; Journal Volume: 73; Journal Issue: 3; Other Information: PBD: 1 Jul 2002 Medium: X; Size: page(s) 339-350 https://doi.org/ [] 3 73 Journal ID: ISSN 0927-0248; SEMCEQ; TRN: NL02E1047 ECN 2010-12-30 20250405