硅酸盐学报2011，Vol.39Issue(3)：481-485,5.
pH值对Bi2WO6粉体的微波水热法合成及光催化性能的影响
Effect of pH Value on Synthesis of Bi2WO6 Powders by Microwave Hydrothermal Method and Photocatalytic Properties
摘要
Abstract
The flower-like and plate-like Bi2WO6 powders were synthesized using Na2WO4·2H2O and Bi(NO3)3·5H2O as raw materials via a microwave hydrothermal method at 200 ℃ through changing the pH value. The Bi2WO6 powders were characterized by X-ray diffraction, field emission scanning electron microscope, transmission electron microscope, selected area electron diffraction and high-resolution transmission electron microscope. The photocatalytic properties of the Bi2WO6 powders prepared under different pH values were also investigated. The results indicate that the pH value has a great effect on the phase composition, morphology and photocatalyfic property of Bi2WO6 powders. The optimum photocatalytic property of the plate-like Bi2WO6 powder synthesized at pH =9.5 is found and the decolorization rate of rhodamine B reaches 95％ at 3 h under mercury lamp irradiation.关键词
钨酸铋/微波水热法/pH值/光催化性能Key words
bismuth tungstate/ microwave-hydrothermal method/ pH value/ photocatalytic property分类
通用工业技术引用本文复制引用
郑玉芹,谈国强,博海洋,夏傲,任慧君..pH值对Bi2WO6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,2011,39(3):481-485,5.基金项目
国家自然科学基金重点项目(50872077) （50872077）
陕西省自然科学基础项目(SJ08E102 （）
SJ08E104) （）
陕西科技大学研究生创新基金(SUST-A04)及陕西科技大学科研创新团队基金(TD-09)项目资助. （SUST-A04）
