以氧化石墨为分散剂的聚苯乙烯微球的制备及其金负载催化研究

Preparation and gold supported catalysis of polystyrene microspheres with graphite oxide as the dispersing agent

先利用修正的Hummers法制备氧化石墨,在不加任何还原剂和分散剂的条件下制备Au/GO乳液;接着,在氮气保护的条件下,采用乳液聚合法制备Au/GO稳定的聚苯乙烯(PS)微球;最后,以对硝基苯酚的还原反应为例对其催化活性进行了研究。利用拉曼光谱、扫描电镜和紫外光谱对所获得的材料进行表征,并对所获得的材料进行分析。结果表明,Au/GO-PS聚合材料能够表现出更高的催化活性。

Firstly,the graphite oxide is prepared by modified Hummers method,and Au/GO emulsion is prepared without any reducing agent and dispersant;then,under the condition of nitrogen protection,Au/GO stable polystyrene（PS）microspheres are prepared by emulsion polymerization method.Finally,the reduction reaction of nitro phenol is taken as an example and its catalytic activity is studied.The obtained materials are characterized by Raman spectroscopy,scanning electron microscopy and ultraviolet spectroscopy,and the materials obtained are analyzed.The results show that the Au/GO/PS polymeric materials can exhibit higher catalytic activity.