使用碳纳米粒子共轭聚合物纳米复合材料净化水中的金属离子。
Water purification from metal ions using carbon nanoparticle-conjugated polymer nanocomposites.
机构信息
Institute of Nuclear Physics, Uzbekistan Academy of Sciences, Tashkent, Uzbekistan.
出版信息
Water Res. 2010 Mar;44(6):1927-33. doi: 10.1016/j.watres.2009.11.041. Epub 2009 Dec 3.
The paper deals with a novel method of obtaining nanocarbon-conjugated polymer nanocomposites (NCPC) using nanocarbon colloids (NCC) and polyethylenimine (PEI) for water purification from metal ions. Size of NCC, process of NCPC synthesis, its chemical characteristics, ratio of NCC and PEI in NCPC, speed of coagulation of NCPC, mechanism of interaction of metal ions with NCPC, ability of removing metal ions from water by NCPC against pH have been studied. NCPC has a bonding capacity of 4.0-5.7mmol/g at pH 6 for most of the divalent metal ions. Percent of sorption of Zn(2+), Cd(2+), Cu(2+), Hg(2+), Ni(2+), Cr(6+) ions is higher than 99%. Lifetime of NCPC before coagulation in the treated water is 1s-1000min and depends on the ratio of polymeric molecules and carbon nanoparticle concentrations. Results of laboratory tests of the method are described.
本文研究了一种使用纳米碳胶体（NCC）和聚乙烯亚胺（PEI）从水中净化金属离子的新型纳米碳-共轭聚合物纳米复合材料（NCPC）的制备方法。研究了 NCC 的粒径、NCPC 的合成过程、其化学特性、NCPC 中 NCC 和 PEI 的比例、NCPC 的凝聚速度、NCPC 与金属离子相互作用的机制以及 NCPC 在去除水中金属离子方面的能力与 pH 的关系。在 pH 值为 6 时，NCPC 对大多数二价金属离子的结合能力为 4.0-5.7mmol/g。Zn(2+)、Cd(2+)、Cu(2+)、Hg(2+)、Ni(2+)、Cr(6+) 离子的吸附率均高于 99%。在处理水中，NCPC 在凝聚前的寿命为 1s-1000min，这取决于聚合分子和碳纳米颗粒浓度的比例。文中还描述了该方法的实验室测试结果。
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