摘要
结合分子印迹技术,MOF199为基体,以二苯并噻吩(DBT)为模板分子,甲基丙烯酸(MAA)为功能单体,制备了新型表面分子印迹聚合物材料MOF@SMIP。采用SEM、BET、FT-IR等对其结构和形貌进行表征,在模拟油样中进行吸附评测,吸附平衡时间为1.5 h。MOF@SMIP对DBT吸附量为130.73 mg/g较MOF199吸附量37.79 mg/g有很大提升,同时MOF@SMIP吸附量对比MOF@NIP吸附量(57.13 mg/g)优势明显,印记因子f_(imp)为2.29。吸附行为遵循伪一阶动力学模型说明吸附主要为物理过程。选择性吸附实验表明,MOF@SMIP对目标分子DBT表现出比对结构类似物苯并噻吩(BT)和联苯更高的亲和力,吸附DBT对干扰物BT和联苯的相对选择系数k'分别达到2.55和2.14。
Combined with molecular imprinting technology,a novel surface molecularly imprinted polymer material MOF@SMIP was prepared,using MOF199 used as matrix,dibenzothiophene(DBT)as template molecule and methacrylic acid(MAA)as functional monomer.The structure and morphology were characterized by SEM,BET,FT-IR,etc.The adsorption behavior was evaluated using a simulated oil sample.The adsorption equilibrium time was 1.5 h.The MOF@SMIP adsorption capacity for DBT(130.73 mg/g)was higher than that for the MOF199(37.79 mg/g),while the MOF@SMIP adsorption capacity(57.13 mg/g)was comparable to the MOF@NIP adsorption capacity.The obvious advantage is that the imprint factor f imp is 2.29.Adsorption behavior follows the pseudo-first-order kinetic model,indicating that the adsorption is primarily a physical process.The selective adsorption experiments showed that the MOF@SMIP exhibited a higher affinity for the target molecule DBT than the structural analog benzothiophene(BT)and biphenyl.The relative selection coefficient k′of the adsorbed DBT to the interferent BT and biphenyl was 2.55 and 2.14,respectively.
作者
陈颖
张琦
梁宏宝
田宫伟
李静
CHEN Ying;ZHANG Qi;LIANG Hong-bao;TIAN Gong-wei;LI Jing(Provincial Key Laboratory of Oil and Gas Chemical Technology,College of Chemistry and Chemical Engineering,Northeast Petroleum University,Daqing 163318,China)
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2018年第9期1130-1136,共7页
Journal of Fuel Chemistry and Technology
基金
国家自然科学基金(21463006)资助~~
关键词
MOFS
分子印迹
二苯并噻吩
功能单体
MOFs
molecular imprinting
dibenzothiophene
functional monomer
