Effect of silver doping on the TiO2 for photocatalytic reduction of CO2

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dc.contributor.author Kočí, Kamila
dc.contributor.author Matějů, Kateřina
dc.contributor.author Obalová, Lucie
dc.contributor.author Krejčíková, Simona
dc.contributor.author Lacný, Zdenek
dc.contributor.author Plachá, Daniela
dc.contributor.author Čapek, Libor
dc.contributor.author Hospodková, Alice
dc.contributor.author Šolcová, Olga
dc.date.accessioned 2010-06-07T11:53:30Z
dc.date.available 2010-06-07T11:53:30Z
dc.date.issued 2010
dc.identifier.citation Applied catalysis. B, Environmental. 2010, vol. 96, issues 3-4, p. 239-244. en
dc.identifier.issn 0926-3373
dc.identifier.uri http://hdl.handle.net/10084/78309
dc.description.abstract Pure TiO2 and various silver-enriched TiO2 powders were prepared by the sol–gel process controlled in the reverse micellar environment. The catalysts were tested in CO2 photocatalytic reduction and characterized by X-ray diffraction (XRD), nitrogen adsorption measurement and UV–vis. Methane and methanol were the main reduction products. The yield of methane and methanol increases when modifying the TiO2 by silver incorporation is caused by two mechanisms: up to 5% of Ag in TiO2 the Ag impurity band inside the TiO2 bandgap decreases the absorption edge and increases so the electron–hole pair generation, above 5% of Ag in TiO2 Ag metallic clusters are formed in TiO2 crystals with Shottky barrier at the metal–semiconductor interface, which spatially separates electron and holes and increases their lifetime (decreases probability of their recombination). en
dc.language.iso en en
dc.publisher Elsevier en
dc.relation.ispartofseries Applied catalysis. B, Environmental en
dc.relation.uri http://dx.doi.org/10.1016/j.apcatb.2010.02.030 en
dc.subject Ag doping en
dc.subject TiO2 en
dc.subject CO2 reduction en
dc.subject photocatalysis en
dc.title Effect of silver doping on the TiO2 for photocatalytic reduction of CO2 en
dc.type article en
dc.identifier.location Není ve fondu ÚK en
dc.identifier.doi 10.1016/j.apcatb.2010.02.030
dc.identifier.wos 000277847300001

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