CAJ | 학술논문

采用原子转移自由基聚合法,以二苯并噻吩为模板分子,4-乙烯基吡啶为功能单体,在 Si O 2表面合成了适合分离油品中二苯并噻吩的新型表面分子印迹聚合物。利用傅里叶变换红外光谱、N2吸附实验、电子扫描电镜对印迹聚合物的结构和形貌进行了表征。通过在模拟油中的静态吸附实验,对印迹聚合物的吸附性能进行了研究。结果表明,在 Si O 2表面成功的合成了具有多孔结构的分子印迹层,分子印迹聚合物对二苯并噻吩表现出良好的特异性识别性能,吸附动力学满足准二级动力学方程,等温线符合 Freundich等温线模型,吸附热力学研究表明吸附以熵驱动为主的自发的吸热过程。
채용원자전이자유기취합법,이이분병새분위모판분자,4-을희기필정위공능단체,재 Si O 2표면합성료괄합분리유품중이분병새분적신형표면분자인적취합물。이용부리협변환홍외광보、N2흡부실험、전자소묘전경대인적취합물적결구화형모진행료표정。통과재모의유중적정태흡부실험,대인적취합물적흡부성능진행료연구。결과표명,재 Si O 2표면성공적합성료구유다공결구적분자인적층,분자인적취합물대이분병새분표현출량호적특이성식별성능,흡부동역학만족준이급동역학방정,등온선부합 Freundich등온선모형,흡부열역학연구표명흡부이적구동위주적자발적흡열과정。
Using dibenzothiophene (DBT)as template,4-vinyl pyridine (4-VP)as function monomer and TiO2 as carrier,a surface molecularly imprinted polymer (TiO2@MIP)was synthesized by atom transfer radical pol-ymerization (ATRP).The sorbents were characterized by the Fourier transform infrared spectroscopy,nitro-gen adsorption and scanning electron microscopy.The adsorption properties of the sorbents were investigated in the model oil.The results indicated that a molecular imprinted layer with porous structure was successfully synthesized on the surface of silica,and TiO2@MIP not only had better surface characteristics but it also per-formed good specific recognition to DBT.The adsorption process followed the pseudo-second-order kinetic mod-el,and it was described well by Freundlich isotherm model.The adsorption thermodynamic parameters showed the adsorption was spontaneous endothermic.