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Photoreduction of carbon dioxide and water into formaldehyde and methanol on semiconductor materials

Abstract

Heterogeneous photoassisted reduction of aqueous carbon dioxide was achieved using semiconductor powders, with either high-pressure Hg-lamps or sunlight as energy sources. The products were methanol, formaldehyde and methane. The reaction was carried out either as a gas-solid process, by passing carbon dioxide and water vapor over illuminated semiconductor surfaces, or as a liquid-solid reaction, by illuminating aqueous suspensions of semiconductor powders through which carbon dioxide was bubbled. Best results, under illumination by Hg-lamps, were obtained with aqueous suspensions of strontium titanate, SrTiO3, tungsten oxide, WO3, and titanium oxide, TiO2, resulting in absorbed energy conversion efficiencies of 6, 5.9 and 1.2 per cent, respectively.
Publication Date:
Jan 01, 1980
Product Type:
Journal Article
Reference Number:
EDB-81-129107
Resource Relation:
Journal Name: Sol. Energy; (United Kingdom); Journal Volume: 25
Subject:
14 SOLAR ENERGY; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CARBON DIOXIDE; PHOTOCHEMICAL REACTIONS; SEMICONDUCTOR MATERIALS; WATER VAPOR; EFFICIENCY; FORMALDEHYDE; INTERFACES; METHANE; METHANOL; PHOTOELECTROCHEMICAL CELLS; REDUCTION; SOLAR CELLS; STRONTIUM TITANATES; TITANIUM OXIDES; TUNGSTEN OXIDES; ALCOHOLS; ALDEHYDES; ALKALINE EARTH METAL COMPOUNDS; ALKANES; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CHEMICAL REACTIONS; DIRECT ENERGY CONVERTERS; ELECTROCHEMICAL CELLS; EQUIPMENT; FLUIDS; GASES; HYDROCARBONS; HYDROXY COMPOUNDS; MATERIALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHOTOELECTRIC CELLS; PHOTOVOLTAIC CELLS; SOLAR EQUIPMENT; STRONTIUM COMPOUNDS; TITANATES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TUNGSTEN COMPOUNDS; VAPORS; 140505* - Solar Energy Conversion- Photochemical, Photobiological, & Thermochemical Conversion- (1980-); 400500 - Photochemistry
OSTI ID:
6031185
Research Organizations:
Weizmann Institute of Science, Rehovot, Israel
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: SRENA
Submitting Site:
IAA
Size:
Pages: 165-170
Announcement Date:
Aug 01, 1981

Citation Formats

Aurian-Blajeni, B, Halmann, M, and Manassen, J. Photoreduction of carbon dioxide and water into formaldehyde and methanol on semiconductor materials. United Kingdom: N. p., 1980. Web. doi:10.1016/0038-092X(80)90472-7.
Aurian-Blajeni, B, Halmann, M, & Manassen, J. Photoreduction of carbon dioxide and water into formaldehyde and methanol on semiconductor materials. United Kingdom. https://doi.org/10.1016/0038-092X(80)90472-7
Aurian-Blajeni, B, Halmann, M, and Manassen, J. 1980. "Photoreduction of carbon dioxide and water into formaldehyde and methanol on semiconductor materials." United Kingdom. https://doi.org/10.1016/0038-092X(80)90472-7.
@misc{etde_6031185,
title = {Photoreduction of carbon dioxide and water into formaldehyde and methanol on semiconductor materials}
author = {Aurian-Blajeni, B, Halmann, M, and Manassen, J}
abstractNote = {Heterogeneous photoassisted reduction of aqueous carbon dioxide was achieved using semiconductor powders, with either high-pressure Hg-lamps or sunlight as energy sources. The products were methanol, formaldehyde and methane. The reaction was carried out either as a gas-solid process, by passing carbon dioxide and water vapor over illuminated semiconductor surfaces, or as a liquid-solid reaction, by illuminating aqueous suspensions of semiconductor powders through which carbon dioxide was bubbled. Best results, under illumination by Hg-lamps, were obtained with aqueous suspensions of strontium titanate, SrTiO3, tungsten oxide, WO3, and titanium oxide, TiO2, resulting in absorbed energy conversion efficiencies of 6, 5.9 and 1.2 per cent, respectively.}
doi = {10.1016/0038-092X(80)90472-7}
journal = []
volume = {25}
journal type = {AC}
place = {United Kingdom}
year = {1980}
month = {Jan}
}