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In Situ Formation of Gold Nanoparticles within a Polymer Particle and Their Catalytic Activities in Various Chemical Reactions
Author(s) -
Jang Wongi,
Taylor Richard,
Eyimegwu Pascal N.,
Byun Hongsik,
Kim JunHyun
Publication year - 2019
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201800891
Subject(s) - colloidal gold , nanoparticle , catalysis , polymer , particle (ecology) , materials science , chemical engineering , nanotechnology , heterogeneous catalysis , polymer chemistry , chemistry , composite material , organic chemistry , oceanography , geology , engineering
Composite materials consisting of nanoscale gold particles and protective polymer shells were designed and tested as catalysts in various chemical reactions. Initially, the systematic incorporation of multiple gold nanoparticles into a poly(N‐isopropylacrylamide) particle was achieved by an in situ method under light irradiation. The degree of gold nanoparticle loading, along with the structural and morphological properties, was examined as a function of the amount of initial gold ions and reducing agent. As these gold nanoparticles were physically‐embedded within the polymer particle in the absence of strong interfacial interactions between the gold nanoparticles and polymer matrix, the readily‐accessible surface of the gold nanoparticles with a highly increased stability allowed for their use as recyclable catalysts in oxidation, reduction, and coupling reactions. Overall, the ability to integrate catalytically‐active metal nanoparticles within polymer particles in situ allows for designing novel composite materials for multi‐purpose catalytic systems.