TY - JOUR
T1 - Facile method to prepare monodispersed ag/polystyrene composite microspheres and their properties
AU - Cheng, Xinjian
AU - Tjong, Sie Chin
AU - Zhao, Qiang
AU - Li, Robert K. Y.
PY - 2009/9/15
Y1 - 2009/9/15
N2 - This article presents a facile method to prepare silver/polystyrene composite microspheres. In this approach, monodispersed polystyrene (PS) particles were synthesized with carboxyl acid groups on the surfaces of the PS particles via dispersion polymerization at first. With the addition of [Ag(NH3)2]+ to the PS dispersion, [Ag(NH 3)2]+ was absorbed to the surfaces of the PS particles, and then by heating the system, [Ag(NH3)2] + complex ions were reduced to silver to form the Ag/PS composite microspheres. In the synthesis of PS dispersion, PVP was used as dispersant to stabilize the PS particles, it also acted as reducing agent in the reduction of [Ag(NH3)2]+ complex ions to silver, so no additional reducing agent was needed. The resulting composite microspheres were characterized by TEM, SEM, XPS, and XRD. The catalytic properties and surface-enhance Raman scattering (SERS) was studied well. © 2009 Wiley Periodicals, Inc.
AB - This article presents a facile method to prepare silver/polystyrene composite microspheres. In this approach, monodispersed polystyrene (PS) particles were synthesized with carboxyl acid groups on the surfaces of the PS particles via dispersion polymerization at first. With the addition of [Ag(NH3)2]+ to the PS dispersion, [Ag(NH 3)2]+ was absorbed to the surfaces of the PS particles, and then by heating the system, [Ag(NH3)2] + complex ions were reduced to silver to form the Ag/PS composite microspheres. In the synthesis of PS dispersion, PVP was used as dispersant to stabilize the PS particles, it also acted as reducing agent in the reduction of [Ag(NH3)2]+ complex ions to silver, so no additional reducing agent was needed. The resulting composite microspheres were characterized by TEM, SEM, XPS, and XRD. The catalytic properties and surface-enhance Raman scattering (SERS) was studied well. © 2009 Wiley Periodicals, Inc.
KW - Ag/ps composite microspheres
KW - Catalysis
KW - Catalytic performance
KW - Composites microstructure
KW - Nanocomposites
KW - Sers property
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U2 - 10.1002/pola.23507
DO - 10.1002/pola.23507
M3 - RGC 21 - Publication in refereed journal
SN - 0887-624X
VL - 47
SP - 4547
EP - 4554
JO - Journal of Polymer Science, Part A: Polymer Chemistry
JF - Journal of Polymer Science, Part A: Polymer Chemistry
IS - 18
ER -