The Effect of Microwave-Assisted for Photo-Catalytic Reaction in Aqueous Nano TiO<SUB>2</SUB> Particles Dispersions

Abstract

In this study, the photo-catalytic degradation of methylene blue in TiO2 particles-dispersed aqueous solution was carried out by irradiating microwave and UV light simultaneously. The results of photocatalytic degradation of methylene blue showed that the decomposition rate increased with the microwave intensity, UV intensity, TiO2 particle dosages and the circulating fluid velocity. From the result of microwave-assisted photo-catalytic degradation of methylene blue, decomposition rate were shown gradually increased according to the increase of pH. The photo-catalytic degradation rate constant obtained under simultaneous irradiation of microwave and UV light case was about 1.5 times higher than irradiation of UV light only case. This result suggests that there is a synergy effect when the constituent techniques are applied together and that the additional irradiation of microwave can play a very important role in photo-catalysis of organic water pollutants.

Synthesis and applications of multifunctional composite nanomaterials

“…A major area of research in microwave processing includes microwave material interaction, microwave equipment design, new material development, sintering, joining, and modeling. As microwave processing offers uniform heating at a lower temperature, it is being successively utilized in the fabrication of ceramics as well as carbon fibers at low temperature and time (Reddy et al 2009;Chae et al 2010). …”

Study on the Property of Silica Minerals Supported NanoTiO₂

“…Many researches have proved that semiconductor TiO 2 can be available to purify polluted water and air with its prominent photo catalytic ability and Chemical durability [1][2][3][4][5][6]. Thus semiconductor TiO 2 would be widely used in environmental protection, and various kinds of researches have been carried out to get dispersed nano-TiO 2 ever since 1970s.…”