Journal of Chemical and Pharmaceutical Research (ISSN : 0975-7384)

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Original Articles: 2012 Vol: 4 Issue: 6

Photocatalytic degradation of amidoblack-10B using nanophotocatalyst


This study involves the photocatalytic degradation of amidoblack- 10B (AB - 10B) in water using nanosized silver doped TiO2, with the use of solar light as the stimulating source. It has been investigated that, when the full range of emitted photons is used, decolourization and complete mineralization of the solution is achieved with satisfactory rates, depending on initial dye concentration. The rate of degradation follows first order kinetics. The photocatalytic degradation of dye depends on concentration of dye, amount of catalyst, silver doped TiO2, pH of the solution. The mechanism of the photodegradation process under visible light illumination involves an electron excitation into the conduction band of the modified TiO2 semiconductor leading to the generation of very active oxygenated species that attack the dye leading to photodegradation Photocatalytic activity of Ag-doped TiO2 was also increased by using H2O2 as electron scavenger.

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