硅酸盐学报2012，Vol.40Issue(6)：832-838,7.
pH值对ZnWO4粉体的微波水热法合成及光催化性能的影响
Effect of pH Value on Microwave-Hydrothermal Synthesis and Photocatalytic Properties of ZnWO4 Powders
摘要
Abstract
The powders of ZnWO4 were synthesized by a microwave-hydrothermal method with Na2WO4·2H2O and Zn(NO3)2·6H2O powders as raw materials at 200 ℃ for 60 min. The effect of pH value on the phase composition, morphology and specific surface area of the ZnWO4 powders synthesized were analyzed. The photocatalytic properties of the powders prepared at different pH values were investigated. The results indicated that the pH value of 5.0-7.5 could favor the synthesis of ZnWO4 powders. The ZnWO4 powders with various morphologies (i.e., star-like, sphere and fiber) and specific surface areas (Le., 15.79, 28.12 m^2/g and 54.27 m^2/g) were synthesized when pH was 5.0, 6.0, and 7.5, respectively. The photoeatalytic performance of ZnWO4 powders increased with the increase of specific surface area of the powders. The superior photocatalytic property was obtained in the ZnWO4 powder with the fiber morphology prepared at a pH value of 7.5, and the corresponding decolorizing rate was 98.5% under UV light irradiation for 2 h.关键词
钨酸锌/微波水热法/pH值/光催化性能Key words
zincum tungstate/microwave-hydrothermal/pH value/photocatalytic properties分类
通用工业技术引用本文复制引用
谈国强,尹君,郑玉芹,宋丽花,夏傲..pH值对ZnWO4粉体的微波水热法合成及光催化性能的影响[J].硅酸盐学报,2012,40(6):832-838,7.基金项目
国家自然科学基金 （）
国家青年科学基金 （）
陕西科技大学研究生创新基金（SUST-A04）资助项目. （）
