Fe_3O_4/PAA/ATP纳米复合磁性微凝胶吸附剂对Pb(Ⅱ)吸附动力学和吸附热力学研究  

Study on adsorption kinetics and adsorption isotherm of Fe_3O_4/PAA/ATP nanocomposite microgels towards Pb(Ⅱ)

作　　者：姜立萍[1] 陈倩[1] 李翠林[1] 刘鹏辉[1] 

机构地区：[1]兰州文理学院化工学院,甘肃兰州730046

出　　处：《化学研究与应用》2017年第3期348-352,共5页Chemical Research and Application

基　　金：兰州文理学院化工新材料科研创新团队项目(2014KYTD01)资助

摘　　要：用γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH-570)对纳米Fe_3O_4磁性粒子和凹凸棒黏土纳米棒晶进行表面改性,通过KH-570的桥接,在纳米Fe_3O_4磁性粒子和凹凸棒纳米棒晶的表面原位接枝聚合丙烯酸单体,制备Fe_3O_4/PAA/ATP纳米复合磁性微凝胶。将该复合微凝胶用作吸附剂,处理水体中的Pb(Ⅱ),研究其对Pb(Ⅱ)的吸附动力学和吸附热力学。Fe3O4 magnetic nano-particles and attapulgite（ ATP） nano-rods were modified with γ-methacryloxypropyl trimethoxy silane（ KH-570）. Acrylic acid monomers were then in-situ graft polymerized onto the modified Fe3O4 magnetic nano-particles and ATP nano-rods through the bridge of KH-570 to obtain Fe3O4/PAA/ATP nanocomposite magnetic microgels,which was used as adsorbent to remove Pb（ Ⅱ） from water.Its adsorption kinetics and adsorption isotherm were studied in this paper.

关 键 词：吸附剂 纳米复合材料 微凝胶 软磁性材料 吸附动力学 吸附热力学 

分 类 号：O634.41[理学—高分子化学]