氧化石墨烯表面坐果安分子印迹聚合物的合成及其表征

Synthesis and characterization of surface molecularly imprinted polymers of cloprop on graphite oxide

以氧化石墨烯为载体,坐果安为模板分子,α-甲基丙烯酸(MAA)为功能单体,采用表面分子印迹技术制备了坐果安分子印迹聚合物微球。利用紫外光谱和扫描电镜等对聚合物进行表征,研究聚合物的结合和识别特性。通过静态平衡结合法研究了吸附时间、温度、pH和底物初始浓度对其吸附性能的影响,并考察了其重复利用性。通过Scatchard分析研究了聚合物的结合特征,最大表现结合量(Q_(max))为114.902μg/mg,其表明聚合物对坐果安分子具有优良的选择吸附性能和较高的吸附容量。

The surface molecularly imprinted polymers microspheres of cloprop was prepared using graphene oxide as carrier and cloprop as template. The effect of solution p H,adsorption time,initial concentration and temperature on the adsorption behavior were investigated by static balance. The Scatchard analysis results demonstrate that the maximum apparent adsorption amount of Cloprop on MIPs is 114. 902 μg/m L. It shows a great improvement in selectivity and adsorption capacity on MIPs for Cloprop. Based on the characterization by scanning electronic microscopy（ SEM） and ultraviolet（ UV） spectroscopy,binding and recognition properties of the polymers was studied.