writer：Tao Song, Meijun Zhou, Wei Liu, *, Guomin Bian, Yonglin Qi, Feng Bai,* and Xinlin Yang*
keywords：P(DVB-co-GMA) microsphere; Epoxy group; Amino group; Distillation precipitation polymerization; Gold nanocolloids
source：期刊
specific source：Colloid Polymer Science 293 (1), 187-197 (2015). DOI: 10.1007/s00396-014-3408-4)
Issue time：2015年
Narrow disperse poly(divinylbenzene-co-glycidyl methacrylate) (P(DVB-co-GMA)) microspheres with reactive epoxy group were prepared by distillation precipitation copolymerization of divinylbenzene (DVB) and glycidyl methacrylate (GMA) with benzoyl peroxide (BPO) as initiator in neat acetonitrile. The epoxy group was modified with ethylenediaminie (EDA) for transferring to amino group, which was used as stabilizer for the gold metallic nanocolloids during the in-situ reduction of gold chloride trihydrate (HAuCl₄) with sodium borohydride (NaBH₄) as a reductant. The catalytic properties of the microsphere-stabilized gold nanocolloids (P(DVB-co-GMA)-NH₂@Au)) were investigated by the reduction of aqueous 4-nitrophenol (4-NP) to 4-aminophenol (4-AnP) with NaBH₄ as reductant. The resultant microspheres were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier-transform infrared spectra (FT-IR), elemental analysis (EA), Zeta-potential, X-ray photoelectron spectroscopy (XPS), inductive coupled plasma (ICP) mission spectrum and UV-vis spectroscopy.