典型文献
Enhancement of solar-driven photocatalytic activity of oxygen vacancy-rich Bi/BiOBr/Sr2LaF7∶Yb3+,Er3+composites through synergetic strategy of upconversion function and plasmonic effect
文献摘要：
For better use of solar energy,the development of efficient broadband photocatalyst has attracted extraordinary attention.In this study,a ternary composite consisting of Sr2LaF7∶Yb3+,Er3+upconversion(UC)nanocrystals and Bi nanoparticles loaded BiOBr nanosheets with oxygen vacancies(OVs,SLFBB)was designed and synthesized by multi-step solvent-thermal method.Mechanisms of in-situ formation of Bi nanoparticles and OVs in BiOBr/Sr2LaF7∶Yb3+,Er3+composites(SFLB)are clarified.The Bi metal and OVs enhanced the light-harvesting capacity in the region of visible-near-infrared(Vis-NIR),and promoted the separation of electron-hole(e-/h+)pairs.Furthermore,the surface plasmon resonance(SPR)effect of Bi metal can improve the energy transfer from Sr2LaF7∶Yb3+,Er3+to BiOBr via nonradiative energy transfer process,resulting in enhancing the light utilization from up-converting NIR into Vis light.Due to the synergistic effects of UC function,SPR and OVs,the SFLBB exhibited obviously enhanced photocatalytic ability for the degradation of BPA with a rate of 8.9×10-3 min-1,which is about 2.78 times higher than 3.2×10-3 min-1 of BiOBr(BOB)under UV-Vis-NIR light irradiation.This work provides a novel strategy for the project of high-efficiency Bismuth-based broadband photocatalysts,which is helpful to fur-ther understand the mechanism of enhanced photocatalysis by UC function and plasmonic effect.
文献关键词：
中图分类号：
作者姓名：
Yongjin Li;Yingying Zhang;Jiajing Wang;Youzhun Fan;Taizhong Xiao;Zhaoyi Yin;Tianhui Wang;Jianbei Qiu;Zhiguo Song
作者机构：
School of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650093,China
文献出处：
引用格式：
[1]Yongjin Li;Yingying Zhang;Jiajing Wang;Youzhun Fan;Taizhong Xiao;Zhaoyi Yin;Tianhui Wang;Jianbei Qiu;Zhiguo Song-.Enhancement of solar-driven photocatalytic activity of oxygen vacancy-rich Bi/BiOBr/Sr2LaF7∶Yb3+,Er3+composites through synergetic strategy of upconversion function and plasmonic effect)[J].环境科学学报（英文版）,2022(05):76-87
A类：
Sr2LaF7,Er3+composites,Er3+upconversion,SLFBB,SFLB,Er3+to,SFLBB
B类：
Enhancement,solar,driven,photocatalytic,activity,oxygen,vacancy,rich,BiOBr,Yb3+,through,synergetic,strategy,function,plasmonic,For,better,use,energy,development,efficient,broadband,has,attracted,extraordinary,attention,In,this,study,ternary,consisting,UC,nanocrystals,nanoparticles,loaded,nanosheets,vacancies,OVs,was,designed,synthesized,by,multi,step,solvent,thermal,method,Mechanisms,situ,formation,clarified,metal,enhanced,light,harvesting,capacity,region,visible,near,infrared,Vis,NIR,promoted,separation,electron,hole,h+,pairs,Furthermore,surface,resonance,SPR,improve,transfer,from,via,nonradiative,process,resulting,enhancing,utilization,converting,into,Due,synergistic,effects,exhibited,obviously,ability,degradation,BPA,which,about,times,higher,than,BOB,UV,irradiation,This,work,provides,novel,project,efficiency,Bismuth,photocatalysts,helpful,fur,understand,mechanism,photocatalysis
AB值：
0.522598
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