Silver nanoparticles prepared by gamma irradiation across metal-organic framework templates
Data(s) |
01/01/2015
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Resumo |
In this study, we demonstrate for the first time the successful fabrication of well-dispersed ultrafine silver nanoparticles inside metal-organic frameworks through a single step gamma irradiation at room temperature. HKUST-1 crystals are soaked in silver nitrate aqueous solution and irradiated with a Cobalt 60 source across a range of irradiation doses to synthesize highly uniformly distributed silver nano-particles. The average size of the silver nanoparticles across the Ag@HKUST-1 materials is found to vary between 1.4 and 3 nm for dose exposures between 1 and 200 kGy, respectively. The Ag@HKUST-1 hybrid crystals exhibit strong surface plasmon resonance and are highly durable and efficient catalytic materials for the reduction of 4-nitrophenol to 4-aminophenol (up to 14.46 × 10-3 s-1 for 1 kGy Ag@HKUST-1). The crystals can be easily recycled for at least five successive cycles of reaction with a conversion efficiency higher than 99.9%. The gamma irradiation is demonstrated to be an effective and environmental friendly process for the synthesis of nano-particles across confined metal-organic frameworks at room temperature with potential applications in environmental science. |
Identificador | |
Idioma(s) |
eng |
Publicador |
Royal Society of Chemistry |
Relação |
http://dro.deakin.edu.au/eserv/DU:30070170/he-silvernano-2015.pdf http://www.dx.doi.org/10.1039/c4ra10260f |
Direitos |
2015, Royal Society of Chemistry |
Palavras-Chave | #Science & Technology #Physical Sciences #Chemistry, Multidisciplinary #Chemistry #POROUS COORDINATION POLYMERS #CATALYTIC-REDUCTION #CARBON NANOTUBES #AG NANOPARTICLES #RECYCLABLE CATALYSTS #SELECTIVE OXIDATION #GOLD NANOPARTICLES #ROOM-TEMPERATURE #THIN-FILMS #4-NITROPHENOL |
Tipo |
Journal Article |