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Basavaraju Srinivas, Ballamoole Shubhamangala, Kannekanti Lalitha, Police Anil Kumar Reddy, Valluri Durga Kumari, Machiraju Subrahmanyam and Bhudev Ranjan De Photocatalytic Reduction of CO2 over Cu-TiO2/Molecular Sieve 5A Composite Photochemistry and Photobiology 87

Article first published online: 15 JUL 2011 | DOI: 10.1111/j.1751-1097.2011.00946.x

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TiO2 and different (wt% Cu) loaded TiO2 and supported on molecular sieve 5A catalysts were prepared by impregnation and solid-state dispersion methods. Photocatalytic reduction of CO2 in water and alkaline solution was investigated in a batch reactor. The Cu-TiO2 supported on molecular sieve catalyst promotes the charge separation which leads to an increase in the selective formation of oxalic acid in addition to methanol, acetic acid and traces of methane. The product formation is due to the high adsorption of CO2, water and product shape selectivity of the composite photocatalyst. The photocatalytic activity is related to its physicochemical properties.

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