摘要
本文成功合成了多杂环表面修饰的碳纳米管,用于去除水中的Pb(Ⅱ),其物理及化学性质使用SEM和FTIR进行表征。批量吸附实验结果表明,改性材料在25℃、pH=6.6、接触时间为300min时,吸附量高达209.05mg·g^-1;动力学数据可以用伪二阶模型进行解释;Freundlich模型吸附完美地解释等温线数据;吸附剂经过5个循环依旧能有效的去除污染物。
A multi-heterocyclic surface modified carbon nanotube is successfully prepared for effective removal of Pb (Ⅱ) from water.Physical and chemical properties of the material are characterized by scanning electron microscope (SEM) and fourier transform infrared spectrometer (FTIR).The batch adsorption experiment results show that the maximum adsorption capacity is 209.05 mg · g^-1 attained at 25 ℃,after 300 min of contact time with equilibrium pH=6.6.The adsorption kinetic data can be well described by the pseudo-second-order model and the isothermal data fits that of Freundlich mode.The adsorbent could keep its removal efficiency even after five adsorption-desorption cycle.
作者
吴征帅
余胜
廖运文
高和军
WU Zhengshuai;YU Sheng;LIAO Yunwen;GAO Hejun(Key Laboratory of Chemical Synthesis and Pollution Control of Sichuan Province,China West Normal University,Nanchong Sichuan 637009,China;Institute of Applied Chemistry,China West Normal University,Nanchong Sichuan 637009,China)
出处
《西华师范大学学报（自然科学版）》
2019年第3期245-250,共6页
Journal of China West Normal University(Natural Sciences)
基金
四川省科技厅应用基础项目(2018JY0115)
南充市应用技术研究与开发专项项目(18YFZJ0035)
西华师范大学英才计划项目(17YC013、17YC139)
四川省化学合成与污染控制重点实验室开放基金(CSPC2015-6-2)
关键词
碳纳米管
吸附法
铅离子
carbon nanotube
adsorption
lead ion
