摘要
以苯酚为模板,γ-脲基丙基三甲氧基硅烷为功能单体采用表面分子印迹聚合法制备了脲基功能化的苯酚表面分子印迹聚合物(苯酚-MIP),并使用红外光谱对苯酚-MIP的结构进行了表征。结果表明:在最佳条件下,初始浓度c0=150mg/L,吸附时间t=20min,pH=7,温度T=30℃下,苯酚-MIP的吸附量是非印迹聚合物(NIP)的2.32倍。动力学数据拟合结果显示:苯酚在苯酚-MIP上的吸附符合伪二级动力学模型和Langmuir等温模型。另外,选择性实验结果显示:苯酚-MIP可以快速和选择性地吸附水中的苯酚。
A novel ureido-functionalized phenol surface molecularly imprinted polymer（phenol-MIP）usingγ-ureidopropyltrimethoxysilane as functional monomer,phenol as template molecule was prepared for the adsorption of phenol in water solution and the structure of phenol-MIP was characterized by FT-IR.The adsorption capacity of phenol-MIP was 2.32 times than that of NIP under the optimum conditions：the initial concentration of phenol was 150 mg/L,adsorption time was 20 min,pH value was 7,and temperature was 30℃.It can be concluded from the fitting results of pseudo-first-order and pseudo-second-order kinetic models that the pseudo-second-order kinetic model satisfactorily correlated the experimental data.Langmuir and Freundlich isotherm models were applied to determine the adsorption isotherm parameters and the obtained R2 value of Langmuir model was more than 0.99,indicating that it successfully fitted the equilibrium data.In addition,the experimental results showed that phenol-MIP can quickly and selectively adsorb phenol in water solution.
出处
《化工新型材料》
CAS
CSCD
北大核心
2017年第12期155-159,共5页
New Chemical Materials
基金
山西省基础研究计划项目(2013011040-1和2008011020)
山西省高等学校科技创新项目(20090012)
关键词
脲基功能化苯酚印迹聚合物
苯酚
选择性吸附
动力学
ureido-functionalized phenol imprinted polymer, phenol, selective adsorption, kinetics
