Visible Light Induced Generation of Hydrogen from H 2 S in CdS‐Dispersions, Hole Transfer Catalysis by RuO 2 | Zendy

Borgarello Enrico | Zendy; Kalyanasundaram Kuppuswamy | Zendy; Grätzel Michael | Zendy; Pelizzetti Ezio | Zendy

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Visible Light Induced Generation of Hydrogen from H 2 S in CdS‐Dispersions, Hole Transfer Catalysis by RuO 2

Author(s) -

Borgarello Enrico,

Kalyanasundaram Kuppuswamy,

Grätzel Michael,

Pelizzetti Ezio

Publication year - 1982

Publication title -

helvetica chimica acta

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.74

H-Index - 82

eISSN - 1522-2675

pISSN - 0018-019X

DOI - 10.1002/hlca.19820650123

Subject(s) - chemistry , catalysis , quantum yield , visible spectrum , sulfur , sulfide , ion , hydrogen , valence (chemistry) , photochemistry , valence band , yield (engineering) , inorganic chemistry , band gap , optics , condensed matter physics , organic chemistry , thermodynamics , physics , fluorescence

Illumination of US‐dispersions by visible light in solutions containing H 2 S or sulfide ions leads to efficient generation of hydrogen and sulfur. Very small quantities of RuO 2 deposited on the CdS‐particles improve markedly the quantum yield of H 2 ‐formation for which the optimum value obtained so far is ϕ = 0.35 ± 0.1. The effect of RuO 2 is attributed to catalysis of hole transfer from the valence band of CdS to H 2 S or sulfide in solution.

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