CAJ | 학술논문

采用配位聚合法制备了 Co2+中介的甲醛印迹聚合物,用红外光谱和扫描电镜研究了分子印迹聚合物的表面结构。以甲醛印迹聚合物作为气相色谱固定相,采用反相气相色谱技术研究了印迹材料对模板及其结构相似物的选择保留性能、等温吸附及吸附热力学,并探讨了分子印迹聚合物对室内空气中甲醛的脱除效果。结果表明,在相同色谱条件下,分子印迹柱对模板分子的容量因子均远高于乙醛。较低柱温和较低载气流速有利于印迹材料对气态模板分子的选择保留,当柱温为90℃,载气流速7.0 mL/ min,进样体积为3.0μL时,分子印迹柱对模板的容量因子高达61.1,对模板及结构类似物的分离因子达到10.66。模板分子在印迹聚合物柱上的气相吸附等温线呈近似线性,而结构类似物乙醛的吸附等温线符合 BET 吸附的Ⅲ类模型。分子印迹聚合物对室内空气中的甲醛也具有一定的脱除能力。
채용배위취합법제비료 Co2+중개적갑철인적취합물,용홍외광보화소묘전경연구료분자인적취합물적표면결구。이갑철인적취합물작위기상색보고정상,채용반상기상색보기술연구료인적재료대모판급기결구상사물적선택보류성능、등온흡부급흡부열역학,병탐토료분자인적취합물대실내공기중갑철적탈제효과。결과표명,재상동색보조건하,분자인적주대모판분자적용량인자균원고우을철。교저주온화교저재기류속유리우인적재료대기태모판분자적선택보류,당주온위90℃,재기류속7.0 mL/ min,진양체적위3.0μL시,분자인적주대모판적용량인자고체61.1,대모판급결구유사물적분리인자체도10.66。모판분자재인적취합물주상적기상흡부등온선정근사선성,이결구유사물을철적흡부등온선부합 BET 흡부적Ⅲ류모형。분자인적취합물대실내공기중적갑철야구유일정적탈제능력。
A Co2+ ion-mediated formaldehyde imprinted polymer ( MIP) was prepared by coordination polymerization method in present work and its surface structure characterized by using IR spectrum and scanning electron microscope ( SEM). Inversed phase gas chromatography ( IGC) technique using this formaldehyde imprinted polymer as stationary phase was utilized to investigate on the retention selectivity, isotherm adsorption and adsorption thermodynamics for this imprint material toward the template and its structural analogue. Also, the ability of this polymer in the removal of formaldehyde from room atmosphere was explored. Results indicated that the capacity of the template on the molecularly imprinted polymers (MIPs) column was much higher than that of aldehyde and the lower column temperature and flow rate of carrier gas was beneficial for the selective retention of imprint material toward the template molecule, possessing a higher capacity factor of 61. 1 for the template and a higher separation factor of 10. 66 for this imprint polymer toward formaldehyde and aldehyde under the optimized chromatographic conditions ( column temperature: 363 K;flow rate of carrier gase: 7. 0 mL/ min; injection volume: 3. 0 μL). An approximate linear adsorption isotherm for the template and a BET Ⅲ one for the analogue on the MIPs was observed. In addition, this molecularly imprinted polymer was shown with higher capability in the removal of formaldehyde from room atmosphere.