高等学校化学学报2012，Vol.33Issue(2)：321-326,6.DOI:10.3969/j.issn.0251-0790.2012.02.019
薄层大面积自支撑碳纳米管电极材料的电容脱盐性能
Self-supporting Macroscopic Carbon Nanotubes Microfiber Hybrid Electrodes for Capacitive Deionization
摘要
Abstract
A promising self-supporting macroscopic carbon nanotubes( CNTs) electrode was prepared by catalytic chemical vapor deposition method through CNTs growth on a three-dimensional network of sinter-locked conductive 8 u,m-nickel fibers, namely CNTs/SMF-Ni (CNTs mass fraction 50% ) , in which the Ni-microfi-brous network serves as current collector and CNTs as ion storage reservoir. This approach permits the desirable large area fabrication and unique combinations of binderlessness, excellent thermal/electrical conductivity, macro-/meso-sized hierarchical porous structure, and individual/uniform dispersion of CNTs. This CNTs electrode was characterized by scanning electron microscopy ( SEM ) , transmission electron microscopy ( TEM ) , Fourier transform infared spectrometry(FTIR) , N2 isothermal adsorption-desorption and X-ray diffraction. The desalination performance for 0.01%NaCl aqueous solution was tested using the CNTs/SMF-Ni as the electrodes of the capacitive deionization. Owing to the excellent ion diffusivity, high conductivity and high meso-pore surface area, such hybrid electrodes delivered the maximum electrosorption capacity of 159 jxmol/g CNTs with a salt removal rate of 57% , using the direct current voltage of 1. 2 V and water flow rate of 5 mL/min. The desalination performance of such hybrid electrodes could be further promoted by oxidation treatment using H2O2 solution, due to significantly enhanced hydrophilicity stemmed from formation of large amount of 0-con-taining groups on the CNTs surface.关键词
碳纳米管/金属纤维/催化化学气相沉积/电容脱盐性能Key words
Carbon nanotube/ Metal fiber/ Catatytic chemical vapor deposition/ Capacitive deionization分类
化学化工引用本文复制引用
王喜文,姜芳婷,索全伶,方玉珠,路勇..薄层大面积自支撑碳纳米管电极材料的电容脱盐性能[J].高等学校化学学报,2012,33(2):321-326,6.基金项目
国家自然科学基金(批准号:20973063)和上海市科委"启明星(跟踪)计划"(批准号:10HQ1400800)资助. （批准号:20973063）
