Journal
CHINESE JOURNAL OF POLYMER SCIENCE
Volume 29, Issue 3, Pages 342-351Publisher
SPRINGER
DOI: 10.1007/s10118-011-1036-8
Keywords
Gold metallic nanocolloids; Magnetic functional polymer microspheres; Catalyst
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Funding
- National Natural Science Foundation of China [20874049]
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Magnetically responsive hierarchical magnetite/silica/poly(ethyleneglycol dimethacrylate-co-4-vinylpyridine) (Fe3O4/SiO2/P(EGDMA-co-VPy)) tri-layer microspheres were used as stabilizers for gold metallic nanocolloids as a facilely recoverable catalyst with the reduction of 4-nitrophenol to 4-aminophenol as a model reaction. The magnetic microsphere stabilized gold metallic nanocolloids were prepared by in situ reduction of gold chloride trihydrate with borohydride as reductant via the stabilization effect of the pyridyl groups to gold nanoparticles on the surface of the outer shell-layer of the inorganic/polymer tri-layer microspheres.
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