Study On Hydrothermal Synthesis Of AgsbO₃Photocatalysts And The Photocatalytic Decomposition Of4BS Dyestuff By AgsbO₃under Visible Light Irradiation

Photocatalysis as an advanced oxidation technology has many unique advantages, but most of catalyst been studied had disadvantages of low quantum efficiency and low utilization of solar energy which constrained the photocatalytic technology application. Therefore, to study and develop catalysts which can respond in visible range of the spectrum and utilize solar energy in high efficiency, is an inevitable trend of leading the photocatalytic technology to practical use.Amony new types of photocatalyst, silver catalyst caused more and more attention because of its high catalytic effect in visible light. There were some research show that hybridization of Ag4d and O2p orbital can reduce the band gap, thereby improving the visible light catalytic activity. AgSbO3, which has received widespread attention for its superior performance, is a potential light catalyst and have large development space.In this paper, AgSbO3was synthesis through hydrothermal method, and the affects of different synthesi condions of AgSbO3on catalytic activity and crystal form, structure and specific surface was studied.Through degradation experiments of4BS dye experiments and the characterization of the catalyst, we determined the best synthesis condition is: original pH value, react temperature of80℃and time of12h. When the catalyst dosage was1.5g/L, decolorization rate reached95.3%after150min reation. And through the dark adsorption experiment, we found that4BS dye decolorization mainly comes from the light catalysis and there was very little effect of physical adsorption, and after5times reused, the catalytic still performed good.