摘要
采用水热法制备钨酸铋,通过聚乙烯吡咯烷酮的量控制其形貌.利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、紫外-可见光光谱仪(UV-Vis)和比表面积分析仪(BET)等仪器对产品进行表征,研究形貌对其光催化降解罗丹明B性能的影响.结果表明,获得团聚状、纳米花状和片状三种形貌的钨酸铋;片状钨酸铋的光催化性能最好,在80 min内对罗丹明B的降解率达到了98%.这是由于片状钨酸铋的比表面积最大,反应活性位点更多.
Bismuth tungstate(Bi_(2)WO_(6))was synthesized via a hydrothermal method using polyvinylpyrrolidone(PVP)as a structure-directing agent.The obtained samples were characterized by using instruments such as X-ray diffractometer(XRD),scanning electron microscope(SEM),ultraviolet-visible light spectrometer(UV-Vis)and specific surface area analyzer(BET)to investigate the effect of morphological features on their photocatalytic performance in Rhodamine B(RhB)degradation.Three distinct morphologies were obtained:aggregated particles,nanoflower-like structures,and nanoplate architectures.Among these,the nanoplate-shaped Bi_(2)WO_(6) exhibited the highest photocatalytic activity,achieving 98%degradation of RhB within 80 minutes under visible light irradiation.This enhanced performance is attributed to its largest specific surface area that provides more active reaction sites.
作者
赵红晓
王琦
毛金雨
张永超
ZHAO Hongxiao;WANG Qi;MAO Jinyu;ZHANG Yongchao(School of Chemical Engineering and Materials/Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province/Institute of Surface Micro and Nano Materials,Xuchang University,Xuchang 461000,China)
出处
《许昌学院学报》
2025年第5期47-50,共4页
Journal of Xuchang University
基金
河南省大学生创新创业训练计划项目(5202510480035)。
关键词
钨酸铋
PVP
不同形貌
光催化性能
Bi_(2)WO_(6)
PVP
different morphologies
photocatalytic properties
