Document Detail


Synthesis of Silver Nanoparticles Confined in Hierarchically Porous Monolithic Silica: A New Function in Aromatic Hydrocarbons Separations.
MedLine Citation:
PMID:  23441723     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Silver nanoparticles (Ag NPs) have been homogeneously introduced into the hierarchically porous monolithic silica columns with well-defined macropores and SBA-15-type hexagonally-ordered mesopores by using ethanol as the mild reductant. Within the cylindrical silica mesopores treated with aminopropyl groups as the host, monocrystalline Ag NPs and nanorods are obtained after being treated in silver nitrate/ethanol solution at room temperature for different duration of reducing time. The loading of Ag NPs in the monolith can be increased to 33 wt % by the repetitive treatment, which also led to the formation of polycrystalline Ag nanorods in the mesopores. Although the bare silica column cannot separate aromatic hydrocarbons, good separation of those molecules by non-charged Ag NPs confined in the porous structure of the monolith has been for the first time demonstrated with the Ag NPs-embedded silica column. The NP-embedded monolithic silica would be a powerful separation tool for hydrocarbons with different number, position and configuration of unsaturated bonds.
Authors:
Yang Zhu; Kei Morisato; Wenyan Li; Kazuyoshi Kanamori; Kazuki Nakanishi
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-2-26
Journal Detail:
Title:  ACS applied materials & interfaces     Volume:  -     ISSN:  1944-8252     ISO Abbreviation:  ACS Appl Mater Interfaces     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-2-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101504991     Medline TA:  ACS Appl Mater Interfaces     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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