采用活性炭纤维(ACF)毡作为原材料,对比评价在煮沸、振荡、超声三种条件下的HCl预处理对其结构及电化学性能的影响.通过BET、SEM、FTIR研究ACF结构的变化,并以灰分和碘值考察ACF的吸附性能以及采用CV曲线分析ACF电极材料的电化学性能变化.结果表明,除HCl超声外,其他预处理都使活性炭纤维的形状和尺寸变得相对规整;经HCl煮沸和HCl振荡处理后的ACF比表面积分别增大34.87％和32.73％,其碘吸附值分别增大41.8％和42.1％,HCl振荡的比电容最高可达62F/g;而HCl超声处理却造成ACF表面刻蚀,其碘值和比表面积均较原样降低.综合比较各种方法的预处理效果如下:HCl振荡>HCl煮沸>HCl超声;HCl振荡处理效果最好,且使ACF表面酸性含氧基团增多,更有利于对无机盐离子的吸附.
参考文献
| [1] | 李海红,董军旗,李红艳.负载TiO2活性炭电极材料的制备工艺[J].材料科学与工程学报,2014(02):260-263,271. |
| [2] | Foo K.Y;Hameed B.H .A short review of activated car-bon assisted electrosorption process: An overview, currentstage and future prospects[J].Journal of Hazardous Materials,2009,170(2-3):552-559. |
| [3] | XUE Y Y;LUG Z;GUO Y et al.Effect of pretreatment method of activated cnrbon on the catalytic reduction of NO by carbon over CuO[J].Applied Catalysis B:Environmental,2008,79(3):262-269. |
| [4] | 李海红,李红艳.预处理方法对活性炭结构及吸附性能的影响[J].粉末冶金材料科学与工程,2014(4):647-653. |
| [5] | 李海红,李红艳,夏禹周.活性炭涂层电极的制备及其电化学性能[J].材料科学与工程学报,2014(01):101-106. |
| [6] | LI J Y;MAO L;LI X N et al.Effect of nitric acid pretreatment on the properties of activated carbon and supported palladium catalysts[J].Industrial & Engineering Chemistry,2005,44(15):5478-5482. |
| [7] | GB/T 12496.3-1999.灰分含量的测定:木质活性炭实验方法[S].北京:中国标准出版社,1999. |
| [8] | GB/T 12496.8-1999.碘吸附值的测定:木质活性炭实验方法[S].北京:中国标准出版社,1999. |
| [9] | 赵研,胡筱敏,单士亮.活性炭涂层电极电吸附除盐性能研究[J].安全与环境学报,2012(03):28-32. |
| [10] | Kwang-Kyu Park;Jae-Bong Lee;Pill-Yang Park .Development of a carbon sheet electrode for electrosorption desalination[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,2007(1/3):86-91. |
| [11] | K.E.Bouhidel;A.Lakehal .Infulence of voltage and flow rate on elecdeioniza-tion (EDI) process efficiency[J].DESALINATION,2006,188:411-421. |
| [12] | LAINE J;CALAFAT A;LABADY M .Preparation and characterization of activated carbons from coconut shell impregnated with phos-phoric acid[J].CARBON,1989,27(2):192-193. |
| [13] | 张巍,应维琪,常启刚,蒋文新,戴伟娣,蒋剑春.水处理活性炭吸附性能指标的表征与应用[J].中国环境科学,2007(03):289-294. |
| [14] | Wang S;Wang D Z;Ji L J et al.Equilibrium and kinetic studieson the removal of NaCl from aqueous solutions by electrosorption oncarbon nanotube electrodes[J].Separation and purification technology,2007,58:12-16. |
| [15] | Kim C H .Electrochemical characterization of electrospum activated carbon nanofibers as anelectrode in supercapacitors[J].Journal of Power Sources,2005,142:382-388. |
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