摘要
采用水热法制备Ti_(3)C_(2)Tx/Bi_(2)WO_(6)复合材料,利用扫描电镜(SEM)、X射线衍射(XRD)、高倍透射电镜(HR-TEM)、紫外可见漫反射(UV-Vis DRS)、荧光光谱(PL)等技术对其进行表征。结果表明,复合材料中Ti_(3)C_(2)Tx由原来的手风琴状结构分散成片状结构,且穿插在卷曲片状结构的Bi_(2)WO_(6)中。以酸性品红(AF)为模拟污染物,考察Ti_(3)C_(2)Tx/Bi_(2)WO_(6)对AF的光降解效果,当Ti_(3)C_(2)Tx的质量分数为7%时,Ti_(3)C_(2)Tx/Bi_(2)WO_(6)的光催化活性较好,光照60 min后,AF降解率达到90.37%。该光催化剂稳定性较好,重复使用四次,AF降解率仍达到80.91%。降解机理研究表明,h^(+)和·O_(2)^(-)是降解AF的主要活性物质。
The Ti_(3)C_(2)Tx/Bi_(2)WO_(6)composites were prepared by hydrothermal method and were characterized by SEM,XRD,HR-TEM,UV-Vis DRS,PL and other techniques.The results show that Ti_(3)C_(2)Tx is dispersed into a sheet structure from the original accordion-like structure and inserted in Bi_(2)WO_(6)with curly sheet structure.Acid fuchsin(AF)is used as a simulated pollutant to investigate the photodegradation effect of Ti_(3)C_(2)Tx/Bi_(2)WO_(6).When the content of Ti_(3)C_(2)Tx is 7wt%,the photocatalytic activity of Ti_(3)C_(2)Tx/Bi_(2)WO_(6)is better,and the AF degradation rate reaches 90.37%after 60 min of light irradiation.The stability of the Ti_(3)C_(2)Tx/Bi_(2)WO_(6)is good as the AF degradation rate retains 80.91%after repeated use of the same photocatalyst for 4 times.The degradation mechanism shows that h^(+)and·O_(2)^(-)are the main active substances for the degradation of AF.
作者
李兵
黄有鹏
吴福礼
杨本宏
LI Bing;HUANG Youpeng;WU Fuli;YANG Benhong(School of Energy Materials and Chemical Engineering,Hefei University,Hefei 230601,China;School of Biology Food and Environmental Engineering,Hefei University,Hefei 230601,China)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2022年第17期17-20,共4页
Materials Reports
基金
安徽省科技攻关后续项目(0392118031)。
关键词
TI
3C
2Tx
钨酸铋
复合材料
光催化
光降解
Ti_(3)C_(2)Tx
bismuth tungstate
composite
photocatalysis
photodegradation
