Abstract
Photocatalytic valorization of harmful pollutants like nitroarenes to important intermediates like aminoarenes has been carried out with the help of TiO2 supported zeolite-4A catalyst, synthesized by polymerizable sol–gel route. A series of solvents such as water, primary and secondary alcohols have been studied for their role on photocatalytic reduction. The reduction of nitrobenzene has been found to be faster compared to that of 4-nitrophenol. The rate of reduction of nitrobenzene is independent of the type of alcohol, whereas the reduction rate of 4-nitrophenol is faster with primary alcohol compared to secondary alcohol. Reduction of 4-nitrophenol has been found to exhibit alcohol concentration dependency and the rate of reduction is dependent on initial concentration of substrate.
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