Synthesis, characterization, and heterogeneous catalysis of polymer‐supported poly(propyleneimine) dendrimer stabilized gold nanoparticle catalyst
Identifieur interne : 000513 ( Istex/Corpus ); précédent : 000512; suivant : 000514Synthesis, characterization, and heterogeneous catalysis of polymer‐supported poly(propyleneimine) dendrimer stabilized gold nanoparticle catalyst
Auteurs : Eagambaram Murugan ; Rajmohan RangasamySource :
- Journal of Polymer Science Part A: Polymer Chemistry [ 0887-624X ] ; 2010-06-15.
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Abstract
We report here, the synthesis of two types of heterogeneous nanoparticle catalysts viz., polymer‐supported poly(propyleneimine)‐G2 dendrimer stabilized gold nanoparticle catalysts using crosslinked poly(4‐vinylpyridine) matrix (PSP4VP) as support material. The grafting of dendrimer on the surface of P4VP beads was characterized by FTIR spectrophotometer and CHN analyses. The immobilization of AuNPs was characterized by UV‐Vis spectrum, SEM, and HRTEM studies. The resultant polymer‐supported dendrimer stabilized AuNPs were used as a heterogeneous catalyst for the reduction of 4‐nitrophenol. The catalytic activity is found to be excellent and it can also be reused many times by simple filtration and activity remains maintained. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 2525–2532, 2010
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DOI: 10.1002/pola.24028
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The grafting of dendrimer on the surface of P4VP beads was characterized by FTIR spectrophotometer and CHN analyses. The immobilization of AuNPs was characterized by UV‐Vis spectrum, SEM, and HRTEM studies. The resultant polymer‐supported dendrimer stabilized AuNPs were used as a heterogeneous catalyst for the reduction of 4‐nitrophenol. The catalytic activity is found to be excellent and it can also be reused many times by simple filtration and activity remains maintained. © 2010 Wiley Periodicals, Inc. 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The grafting of dendrimer on the surface of P4VP beads was characterized by FTIR spectrophotometer and CHN analyses. The immobilization of AuNPs was characterized by UV‐Vis spectrum, SEM, and HRTEM studies. The resultant polymer‐supported dendrimer stabilized AuNPs were used as a heterogeneous catalyst for the reduction of 4‐nitrophenol. The catalytic activity is found to be excellent and it can also be reused many times by simple filtration and activity remains maintained. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 2525–2532, 2010</abstract><abstract type="graphical" lang="en">Heterogeneous gold nanoparticle (AuNPs) catalysts were prepared via immobilization of AuNPs on to the dendrimer grafted crosslinked bead shaped polymer‐supported poly(4‐vinylpyridine) matrix. The catalytic potential of these AuNPs immobilized nanoparticle catalysts is found to be excellent for the reduction of 4‐nitrophenol. They can also be reused by simple filtration and the activity was found to be not changed up to many cycles that shows their stability.</abstract><note type="funding">University of Madras</note><subject lang="en"><genre>Keywords</genre><topic>4‐nitrophenol</topic><topic>catalysis</topic><topic>dendrimers</topic><topic>gold nanoparticles</topic><topic>nanoparticles</topic><topic>polymer‐supported</topic><topic>poly(4‐vinylpyridine)</topic><topic>recycling</topic><topic>reduction</topic><topic>TEM</topic><topic>UV‐vis spectroscopy</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Polymer Science Part A: Polymer Chemistry</title></titleInfo><titleInfo type="abbreviated"><title>J. Polym. Sci. A Polym. 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