改性碳纳米管对水中铜离子的去除作用  

Removal of copper(Ⅱ) from aqueous solution by carbon nanotubes

作　　者：刘泊良[1] 张玉军[1] 王蒲芳[1] 智乐乐[1] 

机构地区：[1]河南工业大学化学化工学院,河南郑州450001

出　　处：《应用化工》2011年第1期68-70,81,共4页Applied Chemical Industry

基　　金：河南省基础与前沿技术研究项目(82300420020);河南工业大学博士基金项目(2009bs016)

摘　　要：采用次氯酸钠氧化法改性碳纳米管,用于吸附水溶液中铜离子。结果表明,改性碳纳米管对水中铜离子的去除效果明显高于未改性的碳纳米管,纯化的碳纳米管对水中铜离子的吸附在60 min左右达到平衡;溶液pH值对水中铜离子的去除有较大的影响。吸附等温线既符合Langmuir吸附等温式,又符合Freundlich等温式。Carbon nanotubes（CNT） were modified by oxidation with sodium hypochlorite solutions（NaClO） and were employed as adsorbents to study the adsorption characteristics of copper from water.The results showed that the removing effect of the modified CNT for Cu2＋ is much better than that of the as-grown ones.The adsorption for Cu2＋ reached equilibrium by about 60 min.The pH value has much impact on Cu2＋ removing.The adsorption isotherm is in accord with both Langmuir and Freundlich equations.

关 键 词：铜离子 碳纳米管 化学改性 吸附 

分 类 号：O613.71[理学—无机化学] TB321[理学—化学]