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典型文献
Synergistic effect of various elements in Fe41Co7Cr15Mo14C15B6Y2 amorphous alloy hollow ball on catalytic degradation of methylene blue
文献摘要:
Metallic glasses have recently attracted great attention in terms of degrading dyes and other organic pollutants as an environmentally friendly material for wastewater remediation.Herein,we report a new type of amorphous catalyst Fe41Co7Cr15Mo14C15B6Y2 hollow balls.Results demonstrate that the catalyst can still completely decolorize the 20 mg/L methylene blue(MB)solution after reused for 50 times under conditions of pH=5,catalyst content 0.5 g/L,and temperature 80℃.The catalyst is easily broken during degradation,so the inner surface also provides additional active sites.The Fe41Co7Cr15Mo14C15B6Y2 amorphous alloy hollow balls were characterized by energy dispersive X-ray specroscopy(EDS),scanning electron microscopy(SEM)and X-ray photoelectron spectroscopy(XPS),respectively.The elements in the catalytic system have a synergistic catalytic effect.Redox cycle Fe2+/Fe3+,Co2+/Co3+and Mo4+/Mo6+promote mutual conversion and accelerate the catalytic process of their reaction with H2O2,forming a self-stable redox cycle process.Among them,Fe2+promotes the conversion of Co3+to Co2+,and Mo4+promotes the conversion of Fe3+to Fe2+,mainly Fe2+and Co2+react with H2O2 to generate·OH.Mo and Cr elements form MoO2 and Cr2O3 plasma compounds on the surface,which act as a protective film to make the catalyst more stable and be repeated used more frequently.
文献关键词:
作者姓名:
Wenhu Luo;Qingjun Chen;Li Ji;Xinyuan Peng;Guosheng Huang
作者机构:
School of Materials Science and Engineering,Nanchang Hongkong University,Nanchang 330063,China;State Key Laboratory for Marine Corrosion and Protection,Luoyang Ship Material Research Institute(LSMRI),Qingdao 266237,China
引用格式:
[1]Wenhu Luo;Qingjun Chen;Li Ji;Xinyuan Peng;Guosheng Huang-.Synergistic effect of various elements in Fe41Co7Cr15Mo14C15B6Y2 amorphous alloy hollow ball on catalytic degradation of methylene blue)[J].稀土学报(英文版),2022(04):605-615
A类:
Fe41Co7Cr15Mo14C15B6Y2,decolorize,specroscopy,Co3+and,Mo6+promote,Fe2+promotes,Co3+to,Mo4+promotes,Fe3+to,Co2+react
B类:
Synergistic,effect,various,elements,amorphous,alloy,hollow,catalytic,degradation,methylene,blue,Metallic,glasses,have,recently,attracted,great,attention,terms,degrading,dyes,other,organic,pollutants,environmentally,friendly,material,wastewater,remediation,Herein,report,new,type,catalyst,balls,Results,demonstrate,that,still,completely,MB,solution,after,reused,times,under,conditions,content,temperature,easily,broken,during,inner,surface,also,provides,additional,active,sites,were,characterized,by,energy,dispersive,ray,EDS,scanning,microscopy,photoelectron,spectroscopy,XPS,respectively,system,synergistic,Redox,cycle,mutual,conversion,accelerate,process,their,reaction,H2O2,forming,self,stable,redox,Among,them,mainly,Fe2+and,generate,MoO2,Cr2O3,plasma,compounds,which,protective,film,make,more,be,repeated,frequently
AB值:
0.528428
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