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https://hdl.handle.net/2440/95822
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dc.contributor.author | Du, X. | - |
dc.contributor.author | Yao, L. | - |
dc.contributor.author | He, J. | - |
dc.date.issued | 2012 | - |
dc.identifier.citation | Chemistry: A European Journal, 2012; 18(25):7878-7885 | - |
dc.identifier.issn | 0947-6539 | - |
dc.identifier.issn | 1521-3765 | - |
dc.identifier.uri | http://hdl.handle.net/2440/95822 | - |
dc.description.abstract | An efficient and facile one-pot method was developed to fabricate noble-metal nanoparticles (NMNs; Au, Pt, PdO and Ag) that were encapsulated within hollow silica nanospheres (HSNs; NMNs@HSNs) with a size of about 100 nm. NMNs@HSNs were afforded in very high yields between 85–95 %. Poly(acrylic acid) (PAA) polyelectrolyte played a dual role in the fabrication process, both as a core template of the HSNs and as a captor of the NMNs through coordination interactions between the COO− groups on the ammonium polyacrylate (APA) polyanionic chains and the empty orbital of the Au atom. The amount of Au loading in Au@HSNs was easily regulated by varying the volume of the HAuCl4 solution added. In addition, these rattle-type particles were successfully applied in the catalytic reduction of 2-nitroaniline (2-NA) as a model reaction, thus indicating that the micropores in the silica shell could achieve the transport of small species—with a size smaller than that of the micropores—into the cavity. Thus, these fabricated NMNs@HSNs have promising applications in catalysis. | - |
dc.description.statementofresponsibility | Xin Du, Lin Yao, and Junhui He | - |
dc.language.iso | en | - |
dc.publisher | Wiley | - |
dc.rights | Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim | - |
dc.source.uri | http://dx.doi.org/10.1002/chem.201200307 | - |
dc.subject | host–guest systems | - |
dc.subject | nanoparticles | - |
dc.subject | noble metals;poly(acrylic acid) | - |
dc.subject | sol–gel processes | - |
dc.title | One-pot fabrication of noble-metal nanoparticles that are encapsulated in hollow silica nanospheres: dual roles of poly(acrylic acid) | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1002/chem.201200307 | - |
pubs.publication-status | Published | - |
Appears in Collections: | Aurora harvest 7 Chemical Engineering publications |
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