摘要
用溶胶凝胶法成功制备了异相可见光Photo-Fenton试剂BiFeO3,并对其形貌等物理化学性质进行表征。考察了异相可见光Fenton体系下罗丹明B的降解情况,2.50h后10mg/L罗丹明B被BiFeO3-Fenton可见光催化并全部降解,证实BiFeO3是很好的异相可见光Photo-Fenton催化剂。利用液相色谱—质谱联用(LC/MS)鉴定分析了罗丹明B降解中间产物,共检测到4种脱乙基产物,初步认为罗丹明B在BiFeO3-H2O2体系下降解主要途径是逐步脱乙基反应。
Heterogeneous visible light photon-Fenton catalyst, BiFeO3, was successfully prepared by sol-gel method. Its phase micro-morphology was characterized by X-ray diffraction （XRD）, scanning electron microscope （SEM） and UV-vis absorbance spectra separately. Performance of heterogeneous visible light photon-Fenton system for Rhodamine B degradation was investigated; it was found that Rhodamine B could be completely decomposed in 2.50 h visible light irradiation by BiFeO3-H2 02, which confirmed that BiFeO3 was an efficient visible light heterogeneous photo-Fenton catalyst. Four de-ethylation products were discovered by liquid chromatography-mass spectrometry （LC-MS） method,the possible photodegradation pathway of Rhodamine B in visible light-BiFeO3-H2O2 system was gradual de-ethylation.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2013年第3期79-84,共6页
Environmental Pollution & Control
基金
江苏省自然科学基金资助项目(BK2012732)
