| Synthesis of biodegradable Ag- deposited magnetic nanocomposites: a solid phase catalyst with high performance in the reduction of 4-nitrophenol |
| Paper ID : 2454-UFGNSM13-FULL (R1) |
| Authors: |
| Abstract: |
| Silver nanoparticles (Ag-NPs) with controlled size and narrow size distribution were successfully prepared in Support of magnetic nanocomposites (Fe3O4/APS/PEG ditriazine).The substrate act as nanoreactors for generating the Ag-NPs via adsorption of silver ions in the brushes and subsequent reduction by addition of NaBH4. The size of Ag-NPs can be well-controlled in several nanometers and with narrow size-distribution. The catalytic activity of Solid phase catalyst were evaluated using a model reaction based on the reduction of 4-nitrophenol to 4-aminophenol by NaBH4. The kinetic data were observed to follow the pseudo first-order rate law, and the apparent rate constant was linearly dependent on the total surface area of the Ag-NPs and the reaction temperatures. This work opens a new way to prepare well-controlled Ag-NPs which should be ideal candidates for catalysts with high performance. |
| Keywords: |
| Magnetic nanocomposites, Ag nanoparticles, Solid phase catalyst, Reduction of para-nitrophenol |
| Status : Paper Accepted (Poster Presentation) |
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