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Hollow mesoporous SiO2 sphere nanoarchitectures with encapsulated silver nanoparticles for catalytic reduction of 4-nitrophenol
Li, Weiqiang1; Ge, Xiao1,2; Zhang, Hao1; Ding, Qianqian1; Ding, Hualin1; Zhang, Yunxia1; Wang, Guozhong1; Zhang, Haimin1; Zhao, Huijun1,3
2016
Source PublicationINORGANIC CHEMISTRY FRONTIERS
Volume3Issue:5Pages:663-670
AbstractIdeally, a superior catalyst should possess high speed, selectivity and stability. However, it is difficult to holistically achieve high speed, selectivity and stability catalysis with modest configured catalyst structures. This work reports a new pre-shell/post-core approach combined with a laser ablation treatment strategy to fabricate a sophisticated catalyst architecture configured with a hollow mesoporous SiO2 (hm-SiO2) sphere shell and multiple encapsulated Ag nanoparticle (NP) yolks (Ag@hm-SiO2). Each Ag@hm-SiO2 nanosphere encapsulates 5-10 Ag NP yolks with an average size of 20 nm, in which the content of silver is about 3.6 wt% based on the inductively coupled plasma measurement. To further enhance the catalytic activity, a laser ablation treatment strategy is innovatively utilized to reduce the sizes of the encapsulated Ag NP yolks and increase their numbers. The catalytic reduction of 4-nitrophenol (4-NP) is used to evaluate the catalytic performance of the fabricated Ag@hm-SiO2 catalyst architecture before and after laser ablation treatment. The laser ablation treated Ag@hm-SiO2 nanospheres demonstrate a three-fold increased catalytic activity towards 4-NP reduction with excellent stability. Such superior catalytic performance could be attributed to the unique structural features of the Ag@hm-SiO2 architecture, in which the mesopore shell provides not only readily accessible pathways for fast transport of reactants to the encapsulated Ag NPs but also an effective protective shield for the encapsulated Ag NPs.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNational Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Natural Science Foundation of China(51272255 ; National Natural Science Foundation of China(51272255 ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; 51572263 ; 51572263 ; 51502298 ; 51502298 ; 51472246) ; 51472246) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Natural Science Foundation of China(51272255 ; National Natural Science Foundation of China(51272255 ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; 51572263 ; 51572263 ; 51502298 ; 51502298 ; 51472246) ; 51472246)
DOI10.1039/c6qi00002a
WOS KeywordGOLD NANOPARTICLES ; GRAPHENE OXIDE ; SHELL NANOREACTOR ; HIGH-STABILITY ; DRUG-DELIVERY ; SILICA ; AU ; NANOSTRUCTURES ; CORE ; EFFICIENT
Indexed BySCI
Language英语
Funding OrganizationNational Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Natural Science Foundation of China(51272255 ; National Natural Science Foundation of China(51272255 ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; 51572263 ; 51572263 ; 51502298 ; 51502298 ; 51472246) ; 51472246) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Natural Science Foundation of China(51272255 ; National Natural Science Foundation of China(51272255 ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences, China ; 51572263 ; 51572263 ; 51502298 ; 51502298 ; 51472246) ; 51472246)
WOS Research AreaChemistry
WOS SubjectChemistry, Inorganic & Nuclear
WOS IDWOS:000376139200009
Citation statistics
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/22098
Collection中科院固体物理研究所
Affiliation1.Chinese Acad Sci, Inst Solid State Phys, Ctr Environm & Energy Nanomat, Key Lab Mat Phys,Anhui Key Lab Nanomat & Nanotech, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
3.Griffith Univ, Ctr Clean Environm & Energy, Gold Coast Campus, Nathan, Qld 4222, Australia
Recommended Citation
GB/T 7714
Li, Weiqiang,Ge, Xiao,Zhang, Hao,et al. Hollow mesoporous SiO2 sphere nanoarchitectures with encapsulated silver nanoparticles for catalytic reduction of 4-nitrophenol[J]. INORGANIC CHEMISTRY FRONTIERS,2016,3(5):663-670.
APA Li, Weiqiang.,Ge, Xiao.,Zhang, Hao.,Ding, Qianqian.,Ding, Hualin.,...&Zhao, Huijun.(2016).Hollow mesoporous SiO2 sphere nanoarchitectures with encapsulated silver nanoparticles for catalytic reduction of 4-nitrophenol.INORGANIC CHEMISTRY FRONTIERS,3(5),663-670.
MLA Li, Weiqiang,et al."Hollow mesoporous SiO2 sphere nanoarchitectures with encapsulated silver nanoparticles for catalytic reduction of 4-nitrophenol".INORGANIC CHEMISTRY FRONTIERS 3.5(2016):663-670.
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