典型文献
Degradation of organics using LaFeO3 as a persulfate activator under low-intensity ultra-violet-light irradiation:Catalytic performance and mechanism
文献摘要：
ABO3-type perovskite oxides with abounding defect structures and diverse physical chemistry attributes have been extensively studied in heterogeneous catalysis.Semiconductor LaFeO3 perovskites fabricated via the sol-gel method were used as peroxydisulfate(PDS)activators for methylene blue(MB)degra-dation under low-intensity ultra-violet(UV)-light to evaluate the degradation efficiency of organic pollutants and mechanism.The results indicate that under low-intensity UV irradiation,the developed UV/LaFeO3/PDS system shows excellent degradation ability of organic pollutants in a wide pH range.Electron spin resonance and radical quenching experiments verify that SO4,·OH,h+and 1O2 are generated during the activation process,and 1O2 plays a dominant role in MB degradation.Reduction of low oxidation state Fe(Ⅱ)and O22-/O-on the LaFeO3 surface shows that oxygen vacancy,as the electron transfer mediator,enhances the redox cycle efficiency of Fe(Ⅱ)/Fe(Ⅲ).Photogenerated electrons of LaFeO3 involved in the cyclic transformation of Fe(Ⅱ)/Fe(Ⅲ)and PDS activation further increase the number of active radicals and thus promote the synergistic effect of photocatalytic coupled with sulfate radical-based advanced oxidation processes.
文献关键词：
中图分类号：
作者姓名：
Yumei Li;Jian Fan;Xiaonan Feng;Tao Tao
作者机构：
School of Environment,Huazhong University of Science and Technology,Wuhan 430074,China;School of Energy and Environment,Inner Mongolia University of Science and Technology,Baotou 014010,China
文献出处：
引用格式：
[1]Yumei Li;Jian Fan;Xiaonan Feng;Tao Tao-.Degradation of organics using LaFeO3 as a persulfate activator under low-intensity ultra-violet-light irradiation:Catalytic performance and mechanism)[J].稀土学报（英文版）,2022(07):1043-1052
A类：
abounding,O22,Photogenerated
B类：
Degradation,organics,using,LaFeO3,persulfate,under,low,intensity,ultra,violet,light,irradiation,Catalytic,performance,mechanism,ABO3,type,oxides,defect,structures,diverse,physical,chemistry,attributes,have,been,extensively,studied,heterogeneous,catalysis,Semiconductor,perovskites,fabricated,via,sol,gel,method,were,used,peroxydisulfate,PDS,activators,methylene,blue,MB,UV,evaluate,degradation,efficiency,pollutants,results,indicate,that,developed,system,shows,excellent,ability,wide,range,Electron,spin,resonance,quenching,experiments,verify,SO4,h+and,1O2,are,during,activation,plays,dominant,role,Reduction,oxidation,state,surface,oxygen,vacancy,transfer,mediator,enhances,redox,cycle,electrons,involved,cyclic,transformation,further,increase,number,active,radicals,thus,promote,synergistic,effect,photocatalytic,coupled,advanced,processes
AB值：
0.593654
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