Li Haibo, Pan Likun, Zhang Yanping, Sun Zhuo
Department of Physics, Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, East China Normal University, Shanghai 200062, China.
Water Sci Technol. 2009;59(8):1657-63. doi: 10.2166/wst.2009.162.
Carbon nanotubes and nanofibres (CNTs-CNFs) films have been grown on Ni sheets by low pressure chemical vapor deposition system and show good physical adsorption capability for ferric (Fe(3 + )) ions. The studies of adsorption kinetics and isotherms indicate that Fe(3 + ) adsorption process was regarded as first-order model and followed a Langmuir isotherm indicating monolayer adsorption. The saturated CNTs-CNFs film is easy to be regenerated by electrodesorption with direct voltage applied. The result shows that the combination of adsorption and electrodesorption by CNTs-CNFs is a promising technology to remove the Fe(3 + ) contamination in solution, which can be further extended to the process of other heavy metal ions.
通过低压化学气相沉积系统在镍片上生长了碳纳米管和纳米纤维（CNTs-CNFs）薄膜，该薄膜对铁离子（Fe(3+)）具有良好的物理吸附能力。吸附动力学和等温线研究表明，Fe(3+)的吸附过程被视为一级模型，遵循朗缪尔等温线，表明为单层吸附。施加直流电压进行电吸附，饱和的CNTs-CNFs薄膜易于再生。结果表明，CNTs-CNFs的吸附与电吸附相结合是一种去除溶液中Fe(3+)污染物的有前景的技术，该技术可进一步扩展到其他重金属离子的处理过程。
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