KEERTHANA R ch14b032 - Academia.edu (original) (raw)
Uploads
Papers by KEERTHANA R ch14b032
Aim: To conduct photocatalytic degradation of dyes using the semiconductor material (usually TiO ... more Aim: To conduct photocatalytic degradation of dyes using the semiconductor material (usually TiO 2) catalyst under ultraviolet radiation, and to evaluate the kinetic parameters, viz. rate constant and order of reaction, using integral and differential methods. Theory: Photolysis involves the use of ultraviolet (UV) or visible light radiation to effect chemical transformations. Photocatalysis uses a catalyst, usually, a semiconducting oxide to accelerate the photoreaction. The mechanism of UV photocatalysis is well documented [1-7], and the following reactions represent the key steps in the generation of charge-carriers and hydroxyl radicals, which mediate photocatalytic reactions. A pictorial representation of the mechanism of TiO 2 photocatalysis is shown in Figure 1.
Aim: To conduct photocatalytic degradation of dyes using the semiconductor material (usually TiO ... more Aim: To conduct photocatalytic degradation of dyes using the semiconductor material (usually TiO 2) catalyst under ultraviolet radiation, and to evaluate the kinetic parameters, viz. rate constant and order of reaction, using integral and differential methods. Theory: Photolysis involves the use of ultraviolet (UV) or visible light radiation to effect chemical transformations. Photocatalysis uses a catalyst, usually, a semiconducting oxide to accelerate the photoreaction. The mechanism of UV photocatalysis is well documented [1-7], and the following reactions represent the key steps in the generation of charge-carriers and hydroxyl radicals, which mediate photocatalytic reactions. A pictorial representation of the mechanism of TiO 2 photocatalysis is shown in Figure 1.