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Controllable synthesis of Ni/SiO2 hollow spheres and their excellent catalytic performance in 4-nitrophenol reduction; Controllable synthesis of Ni/SiO2 hollow spheres and their excellent catalytic performance in 4-nitrophenol reduction
Zhongyi Niu1; Shenghuan Zhang1; Yanbo Sun2; Shili Gai1; Fei He1; Yunlu Dai1; Lei Li1; Piaoping Yang1
2014 ; 2014
Source PublicationDalton transactions ; Dalton transactions
ISSN1477-9226 ; 1477-9226
Volume43Pages:16911–16918
Abstract

The high cost of noble metal nanoparticles used for catalytic reduction of 4-nitrophenol (4-NP) leads to an extensive study of Ni nanoparticles (NPs) for their low cost and magnetic properties. However, the conventional routes for preparing the ferromagnetic Ni NPs usually lead to large particle size and aggregation. In this study, we propose a simple two-step method for the synthesis of hierarchical Ni NP supported silica magnetic hollow microspheres (Ni/SiO2 MHMs). Tiny Ni NPs are well dispersed on the supports with high loading amounts (15 wt%). The size of Ni NPs can be tuned from 10 nm to 21 nm with the size of Ni/SiO2 MHMs increasing from 230 nm to 800 nm. The as-prepared samples exhibit excellent catalytic activity in the reduction of 4-NP. Furthermore, the experimental results prove that the size of Ni NPs plays an important role in the catalytic activity. The catalytic activity of small sized Ni NPs is higher than that of large sized and many other supported Ni NP catalysts as reported. In particular, the magnetic properties of Ni/SiO2 MHMs make them easy to recycle for reuse.

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The high cost of noble metal nanoparticles used for catalytic reduction of 4-nitrophenol (4-NP) leads to an extensive study of Ni nanoparticles (NPs) for their low cost and magnetic properties. However, the conventional routes for preparing the ferromagnetic Ni NPs usually lead to large particle size and aggregation. In this study, we propose a simple two-step method for the synthesis of hierarchical Ni NP supported silica magnetic hollow microspheres (Ni/SiO2 MHMs). Tiny Ni NPs are well dispersed on the supports with high loading amounts (15 wt%). The size of Ni NPs can be tuned from 10 nm to 21 nm with the size of Ni/SiO2 MHMs increasing from 230 nm to 800 nm. The as-prepared samples exhibit excellent catalytic activity in the reduction of 4-NP. Furthermore, the experimental results prove that the size of Ni NPs plays an important role in the catalytic activity. The catalytic activity of small sized Ni NPs is higher than that of large sized and many other supported Ni NP catalysts as reported. In particular, the magnetic properties of Ni/SiO2 MHMs make them easy to recycle for reuse.

DOIhttp://doi.org/10.1039/c4dt02385d ; http://doi.org/10.1039/c4dt02385d
Indexed BySCI ; SCI
Language英语 ; 英语
WOS Research AreaChemistry ; Chemistry
WOS SubjectChemistry, Inorganic & Nuclear ; Chemistry, Inorganic & Nuclear
WOS IDWOS:000344250800042 ; WOS:000344250800042
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Cited Times [WOS]:37   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionFaculty of Health Sciences
Corresponding AuthorYanbo Sun; Piaoping Yang
Affiliation1.Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China.
2.State Key Laboratory of Theoretical and Computational Chemistry, Jilin University, Changchun 130023, P. R. China
Recommended Citation
GB/T 7714
Zhongyi Niu,Shenghuan Zhang,Yanbo Sun,et al. Controllable synthesis of Ni/SiO2 hollow spheres and their excellent catalytic performance in 4-nitrophenol reduction, Controllable synthesis of Ni/SiO2 hollow spheres and their excellent catalytic performance in 4-nitrophenol reduction[J]. Dalton transactions, Dalton transactions,2014, 2014,43, 43:16911–16918, 16911–16918.
APA Zhongyi Niu.,Shenghuan Zhang.,Yanbo Sun.,Shili Gai.,Fei He.,...&Piaoping Yang.(2014).Controllable synthesis of Ni/SiO2 hollow spheres and their excellent catalytic performance in 4-nitrophenol reduction.Dalton transactions,43,16911–16918.
MLA Zhongyi Niu,et al."Controllable synthesis of Ni/SiO2 hollow spheres and their excellent catalytic performance in 4-nitrophenol reduction".Dalton transactions 43(2014):16911–16918.
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