中文摘要：

通过催化裂解法制备多壁碳纳米管，利用Fenton试剂对多壁碳纳米管改性，研究了Fenton改性对多壁碳纳米管表面物理化学特性的影响和对亚甲基蓝的吸附特性．投射电镜（TEM）、比表面积（BET）分析表明，Fenton改性多壁碳纳米管纯度高，孔隙均匀，外径为30nm左右，比表面积为120m2／g；R表面引入了大量含氧基团，等电点为1.8．未改性和Fenton改性多壁碳纳米管对亚甲基蓝的吸附动力学均符合Langergren模型，其平衡吸附量分别为24．5，36．4mg／g；吸附等温线均符合Freundlich模型，未改性和Fenton改性多壁碳纳米管的缸分别为7．92和25．37；温度和pH值升高均有利于Fenton改性多壁碳纳米管对亚甲基蓝的吸附．

英文摘要：

Fenton was used to modify multiwalled carbon nanotubes （MWCNTs） which were prepared by catalytic splitting decomposition method. Modification effects on physicochemical properties of the MWCNTs as well as adsorption properties of methylene blue on them were studied. According to transmission electron microscopy （TEM） and BET surface area characterization, the obtained Fenton modified MWCNTs were clean and uniform in porosity. The outside diameter and surface area of the modified MWCNTs were 30 nm and 120 m2/g, respectively. Large amount of oxygenous functional groups was introduced onto the surface of MWCNTs by modification with Fenton whose isoelectric point was 1.8 measured by zeta potential. The adsorption kinetics curves of methylene blue on both Fenton modified or unmodified MWCNTs could be well correlated by Langergren kinetic adsorption model. According to which, their equilibrium adsorption capacity were 36.4mg/g and 24.5mg/g, respectively. Their adsorption isotherms for methylene blue could be well correlated by Freundlich model giving Freundlich constant （kv） 25.37 and 7.92 respectively. Improvement of both temperature and pH was helpful for methylene blue adsorption on Fenton modified MWCNTs.