高等学校化学学报Issue(1)：19-25,7.DOI:10.7503/cjcu20130886
TiO2/LaFeO3微纳米纤维的可控制备及光催化性能
Controllable Synthesis and Photocatalytic Activity of TiO2/LaFeO3 Micro-nanofibers
摘要
Abstract
TiO2/LaFeO3 heterostructures were fabricated by electrospinning technique and hydrothermal syn-thesis method. The physicochemical properties of the catalysts were characterized by scanning electron micros-copy ( FE-SEM ) , X-ray diffraction ( XRD ) , Fourier transform infrared spectroscopy ( FTIR ) and ultraviolet-visible diffuse reflectance spectra(UV-Vis). The photocatalytic activity of TiO2/LaFeO3 micro-nanofibers to-ward the decomposition of methylene blue( MB) was investigated. The results indicate that defect sites of in-completely carbonized TiO2 fibers are favorable for the growth of LaFeO3 nanoparticles. The band gap of TiO2/LaFeO3 heterostructures is lower than TiO2 improving the photocatalytic activity. After 140 min TiO2/LaFeO3 heterostructures exhibited 65.34% for MB under UV light, and the photocatalytic mechanism of TiO2/LaFeO3 heterostructures were analyzed and discussed.关键词
TiO2/LaFeO3/异质结构/静电纺丝法/水热合成法/光催化性能Key words
TiO2/LaFeO3/Heterostructure/Electrospun/Hydrothermal synthesis/Photocatalytic activity分类
化学化工引用本文复制引用
刘阳,季宏伟,周德凤,朱晓飞,李朝辉..TiO2/LaFeO3微纳米纤维的可控制备及光催化性能[J].高等学校化学学报,2014,(1):19-25,7.基金项目
国家自然科学基金(批准号:20871023)、吉林省科技发展计划项目(批准号:20101549,20130102001JC)和吉林省教育厅项目(批准号:2013130,2013146)资助.@@@@ Supported by the National Natural Science Foundation of China(No.20871023), the Development of Science and Technology Plan of Jilin Province, China ( Nos.2010549,20130102001JC ) and the Programme of Jilin Provincial Education Department, China ( Nos.2013130,2013146) （批准号:20871023）
