高性能多壁碳纳米管/氧化石墨烯/海藻酸钙复合膜吸附亚甲基蓝
High Performance of MWCNT/GO/CA Composite Membranes for MB Adsorption
DOI: 10.12677/MS.2018.84046, PDF,    国家自然科学基金支持
作者: 乔 斌, 李延辉, 李 奇, 杜秋菊, 隋坤艳, 李洪亮, 夏延致:青岛大学纤维新材料国家重点实验室培育基地,山东 青岛;王德昌, 王翠苹:青岛大学机电工程学院,山东 青岛
关键词: 碳纳米管氧化石墨烯海藻酸钙亚甲基蓝吸附Carbon Nanotubes GO Calcium Alginate Methylene Blue Adsorption
摘要: 采用冷冻干燥法制备了多壁碳纳米管/氧化石墨烯/海藻酸钙(MWCNT/GO/CA)复合膜,并研究了其对亚甲基蓝(MB)的吸附性能。复合膜的物理化学性质通过SEM和FTIR等方式来进行表征分析。并研究了GO和MWCNT的含量、MB的初始浓度、溶液pH、温度、吸附剂的加入量和接触时间对吸附过程的影响。动力学研究表明复合膜对MB动态吸附数据遵循准二级动力学方程。采用Langmuir和Freundlich模型对吸附平衡数据进行了分析,结果表明吸附数据很好地遵循Langmuir和Freundlich吸附模型,通过计算得到的最大吸附量高达2748.76 mg/g,表明MWCNT/GO/CA是一种非常有应用前景的MB吸附材料。
Abstract: The multi-walled carbon nanotube/graphene oxide/calcium alginate composite membranes (MWCNT/GO/CA) were prepared by freeze drying and used as an effective adsorbent for the re-moval of methylene blue (MB) from aqueous solution. A batch adsorption experiments were carried out to investigate the effect of different parameters, such as the MWCNT and GO contents, initial dye concentration, solution pH, temperature, adsorbent dosage and contact time on adsorption performance of MWCNT/GO/CA. The physicochemical properties of MWCNT/GO/CA were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron (SEM). The kinetics of MB onto MWCNT/GO/CA was well described by the pseudo-second order model. The adsorption equilibrium data were analyzed by using the Langmuir and Freundlich isotherm models and the results showed that adsorption data could be described reasonably well by the Langmuir isotherm. The maximum adsorption capacity was up to 2748.76 mg/g, indicating that MWCNT/GO/CA is a promising adsorbent for the removal of MB from aqueous solution.
文章引用:乔斌, 李延辉, 李奇, 杜秋菊, 隋坤艳, 王德昌, 王翠苹, 李洪亮, 夏延致. 高性能多壁碳纳米管/氧化石墨烯/海藻酸钙复合膜吸附亚甲基蓝[J]. 材料科学, 2018, 8(4): 412-421. https://doi.org/10.12677/MS.2018.84046

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