The Effect of Som e Prameters on Photacatalyt ic Activity of TiO۲/M Nano Com posite

Increasing the or ganic pollutants release to environment and presence of the synthetic and non-biodegradabl e compounds such as triazine-containing azo dyes in textile effluents are of environmental co ncern. Photocatalysis, be cause of its destructivity, low cost, milder cond ition, easy controllability, no-twain pollution an d chemical stability ap pears as an e fficient pollution control technolog y [۱].TiO۲/ UV system has been co nsidered extensively in photocatalytic processes. However, the poor quantum yield results from rapid electrons/h oles recombination is a problem which restrict its widespread pract ical use [۲]. To increa se the photocatalytic efficiency o f the catalyst, its surface can be mo dified with noble meta ls, such as A u, Pd, Ag, and Pt [۳]. In this work, we investigated the d oping effe ct of some transition metals and a lanthani de onphoto catalytic activity of TiO۲. Acidity of the solution has also significant effe ct on degra dation rate of organic compound and it is studie d here.

کلیدواژه ها:

TiO۲ ، Metal Ion Doped ، Sol- Gel ، Photoc atalyst