Li Ying, Li Xin, Dong Cunku, Li Yuqi, Jin Pengfei, Qi Jingyao
Department of Chemistry, Harbin Institute of Technology, Harbin 150090, China.
Biosens Bioelectron. 2009 Oct 15;25(2):306-12. doi: 10.1016/j.bios.2009.07.001. Epub 2009 Jul 17.
Molecularly imprinted polymer (MIP) for selective recognition and removal of chlorophenols from contaminated water was prepared by reversible addition-fragmentation chain transfer (RAFT) polymerization using RAFT agent functionalized silica gel as the chain transfer agent. The prepared MIP nano-film hybrid silica gel (silica-MIP) was characterized using Fourier transform infrared spectrometer (FT-IR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and BET adsorption isotherm analysis. The proper adsorption and selective recognition ability of the silica-MIP were studied by an equilibrium-adsorption method. The resulting silica-MIP showed outstanding affinity towards 2,4-dichlorophenol (2,4-DCP) in aqueous solution. The silica-MIP bind the original template 2,4-DCP with an appreciable selectivity over structurally related compounds, and the molecular recognition of 2,4-DCP was analyzed in detail.
以功能化硅胶为链转移剂，通过可逆加成-断裂链转移（RAFT）聚合反应制备了用于选择性识别和去除污染水中氯酚的分子印迹聚合物（MIP）。采用傅里叶变换红外光谱仪（FT-IR）、扫描电子显微镜（SEM）、热重分析（TGA）和BET吸附等温线分析对制备的MIP纳米薄膜杂化硅胶（硅胶-MIP）进行了表征。采用平衡吸附法研究了硅胶-MIP的适当吸附和选择性识别能力。所得硅胶-MIP对水溶液中的2,4-二氯苯酚（2,4-DCP）表现出优异的亲和力。硅胶-MIP对原始模板2,4-DCP的结合具有明显高于结构相关化合物的选择性，并对2,4-DCP的分子识别进行了详细分析。
