Heterogeneous Photocatalysis, IX. Zinc Sulfide Catalyzed Photoreduction of Carbon Dioxide | Zendy

Kisch Horst | Zendy; Twardzik Gerhard | Zendy

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Heterogeneous Photocatalysis, IX. Zinc Sulfide Catalyzed Photoreduction of Carbon Dioxide

Author(s) -

Kisch Horst,

Twardzik Gerhard

Publication year - 1991

Publication title -

chemische berichte

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.667

H-Index - 136

eISSN - 1099-0682

pISSN - 0009-2940

DOI - 10.1002/cber.19911240529

Subject(s) - chemistry , photocatalysis , carbon fixation , zinc , zinc sulfide , catalysis , sulfide , photochemistry , electron transfer , carbon dioxide , inorganic chemistry , formate , electrochemical reduction of carbon dioxide , carbon monoxide , organic chemistry

Carbon dioxide is catalytically reduced to formate in a suspension of zinc sulfide in water/2,5‐dihydrofuran when irradiated (λ ≥ 290 nm). Turnover rates are in the range of 1.5 monolayers CO 2 /h. No reaction occurs at pH=12, and a very slow one at pH=3.2,5‐Dihydrofuran functions as reducing agent which is oxidized to dehydro dimers. When it is substituted by 2‐propanol, no CO 2 reduction is observed. Semiconductor photocatalysis by a two‐electron transfer from zinc sulfide to adsorbed hydrogen carbonate is assumed as the key step of CO 2 fixation.

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