摘要
以聚乙烯吡咯烷酮(PVP)、钨酸铵[(NH4)10W12O41]和柠檬酸铋铵(C6H13BiN2O7.H2O)为原料,利用静电纺丝技术成功制备了PVP/C6H13BiN2O7.H2O-(NH4)10W12O41(简写为PVP/BiWO)前躯体,对PVP/BiWO缓慢控温处理制得Bi2WO6。采用差热-热重分析(TG-DTA)、X射线粉末衍射(XRD)、傅里叶红外光谱(FTIR)、X-射线光电子能谱(XPS)、场发射扫描电镜(FE-SEM)、紫外可见漫反射(UV-Vis-NIR/DR)等分析手段研究热处理温度对材料结构的影响,通过罗丹明B(RhB)光降解反应研究其光催化性能。结果表明,可见光照射下,热处理温度600℃时材料的光催化活性最好,并探讨了其光催化机理。
PVP/C6H13BiN2O7·H2O-（NH4）10W12O41 precursors have been successfully fabricated by electrospinning technique in the presence of polyvinyl pyrrolidone,and then the electrospun precursors were calcined at different temperatures.The samples were characterized by thermogravimetry-differential thermal analysis（TG-DTA）,X-ray diffraction（XRD）,Fourier transform infrared spectroscopy（FTIR）,X-ray photoelectron spectroscopy（XPS）,scanning electron microscopy（FE-SEM） and UV-Vis-NIR diffuse reflectance（UV-Vis-NIR/DR）,respectively.The visible-light photocatalytic activity of samples were evaluated with rhodamine B（RhB） as a probe.The results showed that Bi2WO6 was obtained at 600 ℃ and the best photocatalytic activity was achieved under visible light irradiation.
出处
《应用化工》
CAS
CSCD
2012年第2期206-211,共6页
Applied Chemical Industry
基金
国家自然科学基金项目资助(20871023)
吉林省科技发展计划资助项目(20101549)
关键词
静电纺丝
Bi2WO6
光催化活性
electrospinning technology
Bi2WO6
photocatalytic activity
