UM  > 健康科學學院
Uniform Ni/SiO2@Au magnetic hollow microspheres: rational design and excellent catalytic performance in 4-nitrophenol reduction
Shenghuan Zhang1; Shili Gai1; Fei He1; Yunlu Dai2; Peng Gao1; Lei Li1; Yujin Chen3; Piaoping Yang1
2014
Source PublicationNanoscale
Volume6Pages:7025–7032
Abstract

A unique and rational design was presented to fabricate Ni/SiO2@Au magnetic hollow microspheres (MHMs) with interesting structures and well-dispersed metal nanoparticles. Hierarchical nickel silicate hollow microspheres were synthesized using silica colloidal spheres as a chemical template. Then, Ni/SiO2 MHMs with well-dispersed Ni nanoparticles were prepared via an in situ reduction approach. Ni/SiO2@Au MHMs were finally obtained by immobilizing uniform Au nanoparticles onto Ni/SiO2 support through a low-temperature chemical reduction process. It was found that Ni/SiO2@Au MHMs inherit the shape and uniformity of the original silica scaffold, and Ni NPs and Au NPs, which were less than 5 nm in size, were well dispersed on the mesoporous silica shell with narrow size distribution. Both Ni/SiO2 and Ni/SiO2@Au MHMs showed excellent catalytic activity in the 4-nitrophenol reduction reaction. Importantly, introduction of a small amount of Au NPs onto Ni/SiO2 MHMs markedly improved the catalytic activity. In particular, Ni/SiO2@Au MHMs showed high conversion even after re-use for several cycles with magnetic separation. The unique structure, high catalytic performance, and ease of separation make Ni/ SiO2@Au MHMs highly promising candidates for diverse applications.

DOIhttp://doi.org/10.1039/c4nr00338a
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000337143900098
Fulltext Access
Citation statistics
Cited Times [WOS]:58   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionFaculty of Health Sciences
Corresponding AuthorPeng Gao; Yujin Chen; Piaoping Yang
Affiliation1.College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China.
2.State Key Lab of Rare Earth Utilization Resource, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130021, P. R. China
3.College of Science, Harbin Engineering University, Harbin, China
Recommended Citation
GB/T 7714
Shenghuan Zhang,Shili Gai,Fei He,et al. Uniform Ni/SiO2@Au magnetic hollow microspheres: rational design and excellent catalytic performance in 4-nitrophenol reduction[J]. Nanoscale,2014,6:7025–7032.
APA Shenghuan Zhang.,Shili Gai.,Fei He.,Yunlu Dai.,Peng Gao.,...&Piaoping Yang.(2014).Uniform Ni/SiO2@Au magnetic hollow microspheres: rational design and excellent catalytic performance in 4-nitrophenol reduction.Nanoscale,6,7025–7032.
MLA Shenghuan Zhang,et al."Uniform Ni/SiO2@Au magnetic hollow microspheres: rational design and excellent catalytic performance in 4-nitrophenol reduction".Nanoscale 6(2014):7025–7032.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Shenghuan Zhang]'s Articles
[Shili Gai]'s Articles
[Fei He]'s Articles
Baidu academic
Similar articles in Baidu academic
[Shenghuan Zhang]'s Articles
[Shili Gai]'s Articles
[Fei He]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Shenghuan Zhang]'s Articles
[Shili Gai]'s Articles
[Fei He]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.