CAJ | 학술논문

采用一步共沉淀法，以Zn2＋为模板，戊二醛为交联剂制备了磁性Fe3 O4-壳聚糖纳米印迹粒子，分别用X-射线衍射、傅里叶红外光谱、热重分析等手段对该纳米印迹粒子进行结构和性能表征，利用原子吸收光谱研究pH，Zn2＋初始浓度，温度等对其吸附性能的影响，并探讨了其对不同重金属离子的吸附选择性．实验结果表明：壳聚糖很好地包覆在纳米粒子表面，且未改变Fe3 O4的尖晶石结构；纳米粒子中壳聚糖的含量约为10．2％；pH ＝6为较理想的吸附条件，当 Zn2＋初始浓度为200 mg/L 时，单位吸附量最大，约为28．9 mg/g；降低温度有利于吸附的进行．印迹粒子能够较好地选择性吸附锌离子．
채용일보공침정법，이Zn2＋위모판，무이철위교련제제비료자성Fe3 O4-각취당납미인적입자，분별용X-사선연사、부리협홍외광보、열중분석등수단대해납미인적입자진행결구화성능표정，이용원자흡수광보연구pH，Zn2＋초시농도，온도등대기흡부성능적영향，병탐토료기대불동중금속리자적흡부선택성．실험결과표명：각취당흔호지포복재납미입자표면，차미개변Fe3 O4적첨정석결구；납미입자중각취당적함량약위10．2％；pH ＝6위교이상적흡부조건，당 Zn2＋초시농도위200 mg/L 시，단위흡부량최대，약위28．9 mg/g；강저온도유리우흡부적진행．인적입자능구교호지선택성흡부자리자．
Fe3 O4-chitosan (CTS)imprinted nanoparticles were prepared by one-step coprecipitation using Zn2+as template and glutaraldehyde as a crosslinking agent.The nanoparticles were characterized by X-ray diffraction (XRD),Fourier transform infrared spectroscopy (FTIR)and thermo gravimetric analysis (TG) respectively.The effect of pH,initial concentration of Zn2+and temperature on adsorption of Zn2+was also studied by atom adsorption spectroscopy (AAS)and finally the adsorption of various heavy metal ions was discussed.The results showed that the nanaoparticles were successfully covered with chitosan,and their original spinel structure hadn’t changed.The amount of chitosan was about 10.2%(wt).The suitable pH was 6.When the initial concentration of Zn2+was 200 mg/L,the adsorption capacity reached its maximum value which was about 28.9 mg/g.Decreasing temperature benefited the adsorption process and the nanop-articles showed selective adsorption of zinc ions.