Journal ArticleDOI
Photocatalytic reduction of CO2 with H2O on TiO2 and Cu/TiO2 catalysts
Hiromi Yamashita,Hiroyasu Nishiguchi,N. Kamada,Masakazu Anpo,Yasutake Teraoka,H. Hatano,Shaw Ehara,K. Kikui,Leonardo Palmisano,Antonino Sclafani,Mario Schiavello,Marye Anne Fox +11 more
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TLDR
In this article, the efficiency of photoinduced reduction of CO2 by H2O to produce CH4 and CH3OH has been investigated on wellcharacterized standard TiO2 catalysts and on a Cu2+ loaded TiO 2 catalyst.Abstract:
Photoinduced reduction of CO2 by H2O to produce CH4 and CH3OH has been investigated on wellcharacterized standard TiO2 catalysts and on a Cu2+ loaded TiO2 catalyst. The efficiency of this photoreaction depends strongly on the kind of catalyst and the ratio of H2O to CO2. Anatase TiO2, which has a large band gap and numerous surface OH groups, shows high efficiency for photocatalytic CH4 formation. Photogenerated Ti3+ ions, H and CH3 radicals are observed as reactive intermediates, by ESR at 77 K. Cu-loading of the small, powdered TiO2 catalyst (Cu/TiO2) brings about additional formation of CH3OH. XPS studies suggest that Cu+ plays a significant role in CH3OH formation.read more
Citations
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Journal ArticleDOI
Photocatalytic reduction of CO2 on TiO2 and other semiconductors.
Severin N. Habisreutinger,Severin N. Habisreutinger,Severin N. Habisreutinger,Lukas Schmidt-Mende,Lukas Schmidt-Mende,Jacek K. Stolarczyk +5 more
TL;DR: In this paper, the authors present a review of the current approaches for the heterogeneous photocatalytic reduction of CO2 on TiO2 and other metal oxide, oxynitride, sulfide, and phosphide semiconductors.
Journal ArticleDOI
The teraton challenge. A review of fixation and transformation of carbon dioxide
TL;DR: In this paper, the authors present a review of CO2, its synthetic reactions and their possible role in future CO2 mitigation schemes that have to match the scale of man-made CO2 in the atmosphere, which rapidly approaches 1 teraton.
Journal ArticleDOI
A surface science perspective on TiO2 photocatalysis
TL;DR: The field of surface science provides a unique approach to understand bulk, surface and interfacial phenomena occurring during TiO2 photocatalysis as mentioned in this paper, including photon absorption, charge transport and trapping, electron transfer dynamics, adsorbed state, mechanisms, poisons and promoters, and phase and form.
Journal ArticleDOI
The design and development of highly reactive titanium oxide photocatalysts operating under visible light irradiation
Masakazu Anpo,Masato Takeuchi +1 more
TL;DR: In this paper, the preparation of highly reactive titanium oxide photocatalysts and the clarification of the active sites as well as the detection of the reaction intermediates at the molecular level are discussed.
Journal ArticleDOI
Cocatalysts for Selective Photoreduction of CO2 into Solar Fuels.
TL;DR: Various cocatalysts, such as the biomimetic, metal-based,Metal-free, and multifunctional ones, and their selectivity for CO2 photoreduction are summarized and discussed, along with the recent advances in this area.
References
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Photoelectrocatalytic reduction of carbon dioxide in aqueous suspensions of semiconductor powders
TL;DR: In this paper, the photoelectrocatalytic reduction of carbon dioxide to form organic compounds such as formic acid, formaldeyde, methyl alcohol and methane, in the presence of photosensitive semiconductor powders suspended in water as catalysts, is described.
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Photocatalytic hydrogenation of propyne with water on small-particle titania: size quantization effects and reaction intermediates
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Photocatalytic reduction of carbon dioxide to methane and acetic acid by an aqueous suspension of metal-deposited TiO2
TL;DR: In this article, it was shown that deposition of a metal on TiO2 considerably accelerated photocatalytic reduction of carbon dioxide to methane and/or acetic acid, and product distribution was dependent on the kind of metal on the surface of TiO 2.
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Photoreduction of carbon dioxide and water into formaldehyde and methanol on semiconductor materials
TL;DR: In this paper, a photoassisted reduction of aqueous carbon dioxide was achieved using semiconductor powders, with either high pressure Hg-lamps or sunlight as energy sources.
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Electrochemical Reduction of CO 2 at Intentionally Oxidized Copper Electrodes
TL;DR: In this article, the stability of semiconductor films is discussed in terms of breakdown currents due to band-to-band tunneling and the major impurities deposited on the Cu electrode during electrolysis are Zn and Fe at several atom percent each.