典型文献
Photocatalytic activity of Eu-doped ZnO prepared by supercritical antisolvent precipitation route:When defects become virtues
文献摘要：
The aim of this work is to determine the structural and optical properties of Eu-doped ZnO powders pre-pared by supercritical antisolvent precipitation route(SAS)and to correlate the physico-chemical features with the photocatalytic activity under UV light.Raman and EPR spectroscopy highlight the introduction of novel defects(mainly singly and doubly ionized oxygen vacancies,and oxygen interstitials)on the Eu-doped ZnO samples,which confer higher hydrophilicity to the doped samples with respect to bare ZnO,as evidenced by FT-IR analysis.Additionally,photoluminescence spectra show that the presence of Eu3+totally quenches the visible light emission typical of bare ZnO,which mainly results from the re-combination of photogenerated holes at defective sites.The prepared samples were tested both for the photocatalytic degradation of crystal violet dye(CV)and for the partial oxidation of ferulic acid under UV irradiation.The photocatalytic activity results evidence of a higher ability of Eu-doped photocatalysts to degrade CV and ferulic acid,while higher selectivity values towards vanillin are obtained in the pres-ence of bare ZnO.The higher activity of Eu-doped ZnO photocatalysts is linked to the stabilization of photogenerated holes and to their higher hydrophilicity,both brought by the generation of defective sites induced by the presence of Eu3+ions within the ZnO lattice.
文献关键词：
中图分类号：
作者姓名：
Olga Sacco;Paola Franco;Iolanda De Marco;Vincenzo Vaiano;Emanuela Callone;Riccardo Ceccato;Francesco Parrino
作者机构：
Department of Chemistry and Biology"A.Zambelli",University of Salerno,via Giovanni Paolo Ⅱ,132,84084 Fisciano Salerno,Italy;Department of Industrial Engineering,Univerisity of Salerno,Via Giovanni Paolo Ⅱ 132,84084 Fisciano Salerno,Italy;Department of Industrial Engineering,University of Trento,Via Sommarive 9,30123 Trento,Italy
文献出处：
引用格式：
[1]Olga Sacco;Paola Franco;Iolanda De Marco;Vincenzo Vaiano;Emanuela Callone;Riccardo Ceccato;Francesco Parrino-.Photocatalytic activity of Eu-doped ZnO prepared by supercritical antisolvent precipitation route:When defects become virtues)[J].材料科学技术（英文版）,2022(17):49-58
A类：
antisolvent,Eu3+totally,Eu3+ions
B类：
Photocatalytic,activity,doped,ZnO,prepared,by,supercritical,precipitation,route,When,defects,become,virtues,aim,this,work,determine,structural,optical,properties,powders,SAS,correlate,physico,chemical,features,photocatalytic,under,UV,Raman,EPR,spectroscopy,highlight,introduction,novel,mainly,singly,doubly,ionized,oxygen,vacancies,interstitials,samples,which,confer,higher,hydrophilicity,respect,bare,as,evidenced,FT,analysis,Additionally,photoluminescence,spectra,show,that,presence,quenches,visible,emission,typical,results,from,combination,photogenerated,holes,defective,sites,were,tested,both,degradation,crystal,violet,dye,CV,partial,oxidation,ferulic,acid,irradiation,ability,photocatalysts,degrade,while,selectivity,values,towards,vanillin,obtained,linked,stabilization,their,brought,generation,induced,within,lattice
AB值：
0.515679
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