Cu-modified TiO(2) photocatalysts for decomposition of acetic acid with simultaneous formation of C(1)-C(3) hydrocarbons and hydrogen

Three different methods of modification (impregnation, photodeposition and mechanical alloying) were used to obtain a series of novel Cu/TiO(2) photocatalysts. Two Cu(II) salts: (Cu(NO(3))(2) and Cu(CH(3)COO)(2)) as well as metallic copper were applied as modifying agents. The influence of the modif...

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Bibliographic Details
Published in:Applied catalysis. B, Environmental Environmental, 2013-09, Vol.140-141, p.108-114
Main Authors: Heciak, Aleksandra, Morawski Antoni, W, Grzmil, Barbara, Mozia, Sylwia
Format: Article
Language:English
Subjects:
Acetic acid
Aliphatic hydrocarbons
Copper
Hydrocarbons
Photocatalysis
Photocatalysts
Precursors
Titanium dioxide
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Summary:Three different methods of modification (impregnation, photodeposition and mechanical alloying) were used to obtain a series of novel Cu/TiO(2) photocatalysts. Two Cu(II) salts: (Cu(NO(3))(2) and Cu(CH(3)COO)(2)) as well as metallic copper were applied as modifying agents. The influence of the modification procedure and copper precursor on the physico-chemical properties and photoactivity of the photocatalysts towards formation of useful hydrocarbons from acetic acid were especially investigated. Various gaseous products were identified during the photocatalytic process: CH(4). CO(2), C(2)H(6), C(3)H(8) and H(2). The amounts of those compounds were strongly dependent on the photocatalyst type. Crucial features affecting the photoactivity of the obtained materials were the amount of Cu and phase composition of the samples. Nonetheless, most of the Cu/TiO(2) photocatalysts revealed significantly improved activity in the photocatalytic generation of useful aliphatic hydrocarbons and hydrogen compared to the crude TiO(2) or commercial TiO(2) P25.
ISSN:0926-3373