Bi4Ti3O12 synthesized by high temperature solid phase method and its visible catalytic activity
Oxides containing bismuth with layer structures are well known for their unique properties and high visible catalytic activity.In this paper,Bi2O3 and TiO2 were used as raw materials to synthesize Bi4Ti3O12 by high temperature solid phase method.The shape and crystal structure of Bi4Ti3O12 were characterized via X-Ray Diffraction (XRD),X-ray photoelectron spectroscopy (XPS),Scanning electron microscope (SEM),Transmission electron microscopy (TEM),High resolution TEM (HRTEM),and Selected area electron diffraction (SAED).The photochemical characteristics of products were measured by UV-Vis absorption.We focused on the environmental application of the prepared nanoparticles for the destructions of chlorine phenol (4-CP) and microcystin-RR (MC-RR)under visible light irradiation (λ > 420 nm).The results demonstrated that nearly all of 4-CP and MC-RR were degraded by Bi4Ti3O12 which showed superior photocatalytic activity.At the same time,transient oxidative species generated during photocatalysis were tracked by Electron spin resonance (EPR),which indicated that the major oxidative species in the system were hydroxyl radical (·OH)and superoxide radical (O2·-).
bismuth titanate Bi4Ti3O12 photocatalysis visible light
Lingli Wang Wanhong Ma Yanfen Fang Yu Zhang Manke Jia Reiping Li Yingping Huang
Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University,Yichang 443002, China
国际会议
2013 International Symposium on Environmental Science and Technology(2013环境科学与技术国际会议)
大连
英文
439-447
2013-06-04（万方平台首次上网日期，不代表论文的发表时间）