期刊
JOURNAL OF CHEMICAL AND ENGINEERING DATA
卷 56, 期 6, 页码 2793-2801出版社
AMER CHEMICAL SOC
DOI: 10.1021/je101275e
关键词
-
资金
- National Natural Science Foundation of China [21077046, 30970309]
- Ph.D. Programs Foundation of Ministry of Education of China [20093227110015]
- Ph.D. Innovation Programs Foundation of Jiangsu Province [CX10B_276Z]
A simple method for selective recognition of 3-chlorophenol (3-CP) from aqueous solution has been developed using a surface molecularly imprinted polymer (MIP) as sorbent. Characterization of the obtained MIP was achieved by Fourier transform infrared spectroscopy (FTIR). Kinetic, thermodynamic, dynamic adsorption, and selectivity experiments were investigated in this study. Kinetic experimental data were well-described by the pseudosecond-order kinetic model. The obtained Arrhenius activation energy E-a from the kinetic data indicated a physisorption mechanism, and the negative values of Delta H degrees demonstrated that the adsorption of 3-CP onto MIP was exothermic. Equilibrium experimental data of MIP fitted the Langmuir isotherm well. The MIP showed outstanding affinity toward 3-CP in aqueous solution, and the optimum pH value for binding has been found around the neutral range. When methanol was used as eluent, the adsorbed 3-CP eluted easily from MIP. The total dynamic capacity of the imprinted sorbent was calculated to be 1137.58 mg.g(-1). The breakthrough of 3-CP started after 60 mL, and the breakthrough capacity was 756.8 mg.g(-1). Meanwhile, selectivity experiments demonstrated that MIP showed high affinity to target molecules over competitive CPs (2,6-dichlorophenol and 2,4,6-trichlorophenol).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据