无机材料学报2011，Vol.26Issue(11)：1169-1174,6.DOI:10.3724/SP.J.1077.2011.01169
Bi2WO6的水热合成及其光催化性能研究
Hydrothermal Synthesis and Photocatalytic Properties of Bi2WO6
摘要
Abstract
Series of bismuth tungstate (Bi2WO6) catalysts were synthesized through simple hydrothermal route and characterized by X-ray diffraction (XRD), field emission scanning electron microscope (FESEM) and UV-Vis diffuse reflectance spectroscope (DRS). The effects of synthesis conditions on the morphologies and properties of products were studied. UV-Vis diffuse reflectance spectra indicated that the samples had absorption in both UV and visible light areas. Their photocatalytic activities were determined by photodegradation of Rhodamine B (RhB) under UV and visible light irradiation (λ> 420 nm). The results indicated that sample reacted at 180°C for 24h (pH=2) had the best photocatalytic activities, with reaction rate constant k of 0.03688/min. The stability of photocatalysts was estimated, no obvious loss of photocatalytic property was detected after four cyclic tests. After 150min visible light irradiation, the degradation rate of dye to the Bi2WO6 reacted at 180°C for 24h (pH=2) reached 38%.关键词
Bi2WO6粉体/水热合成/光催化性能/罗丹明BKey words
Bi2WO6 powders/ hydrothermal synthesis/ photocatalytic properties/ rhodamine B (RhB)分类
化学化工引用本文复制引用
刘瑛,王为民,傅正义,王皓,王玉成,张金咏..Bi2WO6的水热合成及其光催化性能研究[J].无机材料学报,2011,26(11):1169-1174,6.基金项目
国家自然科学基金(50821140308) （50821140308）
