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PS Microspheres Coated by AuNPs via Thermodynamic Driving Heterocoagulation and Their High Catalytic Activity
Author(s) -
Pan Yunfei,
Wang Jianing,
Wang Yong,
Wang Zhaoqun
Publication year - 2014
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201300794
Subject(s) - rhodamine b , thermogravimetric analysis , materials science , composite number , scanning electron microscope , transmission electron microscopy , chemical engineering , catalysis , nanotechnology , nitroaniline , composite material , chemistry , photocatalysis , organic chemistry , engineering
A unique method of fabricating PS/AuNPs composite particles in ex situ mode is proposed on the basis of thermodynamically driving mechanism. It is facile and versatile as it eliminates the need for surface functionalizations and modifications of both PS microspheres and AuNPs. The PS/AuNPs composite particles take on a raspberry‐like morphology with controllable coverage according to some thermodynamic factors, which have been extensively characterized by scanning electron microscopy, transmission electron microscopy, and thermogravimetric analysis. More importantly, the PS/AuNPs composite particles hold higher catalytic efficiency and better repeatability than the previously reported results, which are confirmed in two oxidation–reduction reactions of 2‐nitroaniline/NaBH 4 and rhodamine B/NaBH 4 .