Facile Fabrication Method of PS/Ni Nanocomposite Spheres and Their Catalytic Property

详细信息    查看全文

• 作者：Min Chen ; Juan Zhou ; Lin Xie ; Guangxin Gu ; Limin Wu
• 刊名：Journal of Physical Chemistry C
• 出版年：2007
• 出版时间：August 16, 2007
• 年：2007
• 卷：111
• 期：32
• 页码：11829 - 11835
• 全文大小：681K
• 年卷期：v.111,no.32(August 16, 2007)
• ISSN：1932-7455

文摘

In this paper we present a novel and facile method to fabricate polystyrene/nickel (PS/Ni) nanocompositespheres. In this approach, the negatively charged PS colloids bearing -COOH groups on the surfaces wereused as templates, and the Ni²⁺ ions and a small amount of Ag⁺ ions were then adsorbed onto the surfacesof the PS colloids via electrostatic interaction and reduced in situ by hydrazine hydrate. Transmission electronmicroscopy, scanning electron microscopy, and energy-dispersive X-ray spectrometry indicated that metalnanoparticles were successfully deposited onto the surfaces of the PS colloids. The influence of someparameters, such as the amount of -COOH and PVP groups on the PS colloid surface, Ni²⁺ ion concentration,etc., on the morphology of the nanocomposite spheres was investigated. UV-vis spectra showed thesenanocomposite spheres had a very good catalytic property.