不同配比对HNO_3/TiO_2改性活性炭电极电吸附性能的影响
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摘要
以HNO_3/TiO_2改性后的活性炭为电极材料,通过单因素和正交实验得到电极制备的最佳配料比,采用分层蒸涂法制备HNO_3/TiO_2改性活性炭涂层电极,利用循环伏安法表征分析活性炭电极的电化学性能,并通过去离子实验评价电极的电吸附性能。结果表明,在HNO_3/TiO_2改性活性炭、石墨烯微片、聚偏氟乙烯三者质量比为1∶0.09∶0.08的条件下,所制备的活性炭涂层电极的比电容值最高为143.17 F/g,其除盐效率达到54.17%,电极电吸附性能良好。
Taking activated carbon modified with HNO_3/TiO_2 as electrode material, the optimum proportion ratio of the electrode were obtained by single factor test and orthogonal test. HNO_3/TiO_2 dioxide modified activated carbon coated electrode was prepared by stratified evaporation. The electrochemical properties of activated carbon electrodes were characterized by cyclic voltammetry, and the electrosorption properties of the electrodes were evaluated by deionization experiments. The results show that the mass ratio of activated carbon, graphene microchip and polyvinylidene fluoride was 1∶0.09∶0.08,the prepared activated carbon coated electrode has a specific capacitance value of up to 143.17 F/g,the desalination efficiency reaches 54.17%, and the electrode has good electrosorption performance.
Taking activated carbon modified with HNO_3/TiO_2 as electrode material, the optimum proportion ratio of the electrode were obtained by single factor test and orthogonal test. HNO_3/TiO_2 dioxide modified activated carbon coated electrode was prepared by stratified evaporation. The electrochemical properties of activated carbon electrodes were characterized by cyclic voltammetry, and the electrosorption properties of the electrodes were evaluated by deionization experiments. The results show that the mass ratio of activated carbon, graphene microchip and polyvinylidene fluoride was 1∶0.09∶0.08,the prepared activated carbon coated electrode has a specific capacitance value of up to 143.17 F/g,the desalination efficiency reaches 54.17%, and the electrode has good electrosorption performance.
引文
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[2] 黄斌,潘咸峰,孙晓慰,等.电吸附组合工艺在炼油污水回用中的研究与应用[J].环境工程,2009,27(6):6-8.HUANG B,PAN X F,SUN X W,et al.The application and research of electroadsorption compound process in refinery wastewater reclamation[J].Environmental Engineering,2009,27(6):6-8.(in Chinese)
[3] 韩寒,陈新春,尚海利.电吸附除盐技术的发展及应用[J].工业水处理,2010,30(2):20-23.HAN H,CHEN X C,SHANG H L.Development and application of electro-sorption desalting technique[J].Industrial Water Treatment,2010,30(2):20-23.(in Chinese)
[4] GHOSH A,LEE Y H.Carbon-based electrochemical capacitors[J].Chem Sus Chem,2012,5(3):480-499.
[5] DERAMAN M,NOR N S M,BASRI N H,et al.Graphene and activated carbon based supercapacitor electrodes[J].AMR,2015,1112:231-235.
[6] 仇上.双电层电容器电极涂覆过程中若干工艺问题研究[D].上海:华东理工大学,2016.QIU S.Study on the engineering characteristics of electrode coating process for electronic double layer capactior[D].Shanghai:East China University of Science and Technology,2016.(in Chinese)
[7] SHE Y Y,TANG Y G,LIU H T,et al.Electrochemical determination of hydroquinone using hydrophobic ionic liquid-type carbon paste electrodes[J].Chemistry Central Journal,2010,4(1):17-18.
[8] PARK K K,LEE J B,PARK P Y,et al.Development of a carbon sheet electrode for electrosorption desalination[J].Desalination,2007,206(1/2/3):86-91.
[9] 段小月,常立民,刘伟,等.制备工艺对活性炭电极电吸附性能的影响[J].环境科学与技术,2010,33(5):63-66.DUAN X Y,CHANG L M,LIU W,et al.Influence of preparation technology to electrosorptive deionization on activated carbon electrode[J].Environmental Science & Technology,2010,33(5):63-66.(in Chinese)
[10] 段小月,常立民,刘伟,等.活性炭电极对溶液中NaCl的电吸附行为[J].化工环保,2010,30(4):356-359.DUAN X Y,CHANG L M,LIU W,et al.Electro-adsorption of NaCl in solution on activated carbon electrode[J].Environmental Protection of Chemical Industry,2010,30(4):356-359.(in Chinese)
[11] 陈新金,王越,徐世昌,等.碳纳米管电极压片成型条件优化与脱盐性能研究[J].化学工业与工程,2013,30(1):42-47.CHEN X J,WANG Y,XU S C,et al.Modeling condition optimization and desalting performance evaluation of carbon nanotubes electrode[J].Chemical Industry and Engineering,2013,30(1):42-47.(in Chinese)
[12] 林烨,姚路,吴登鹏,等.基于柳絮的生物质活性炭制备及电容性能的研究[J].电子元件与材料,2018,37(10):13-21.LIN Y,YAO L,WU D P,et al.Preparation and Capacitance properties of activated carbon derived from willow catkin for supercapacitors[J].Electronic Components and Materials,2018,37(10):13-21.(in Chinese)
[13] 史长亮,邢宝林,曾会会,等.梯级孔生物质活性炭的制备及其电容特性研究[J].材料导报,2018,32(19):3318-3324.SHI C L,XING B L,ZENG H H,et al.Preparation of hierarchical pore biomass activated carbons and their Capacitance characteristics[J].Materials Review,2018,32(19):3318-3324.(in Chinese)
[14] 赵研,胡筱敏,单士亮,等.活性炭涂层电极电吸附除盐性能研究[J].安全与环境学报,2012,12(3):28-32.ZHAO Y,HU X M,SHAN S L,et al.Renovated electro-absorptive desalination by using activated carbon coating electrodes[J].Journal of Safety and Environment,2012,12(3):28-32.(in Chinese)
[15] 李海红,裴盼盼,李红艳,等.热处理对TiO2/AC电极材料结构及电化学性能的影响[J].哈尔滨工业大学学报,2015,47(11):118-122.LI H H,PEI P P,LI H Y,et al.Effect of heat treatment on structure and electrochemical performance of TiO2/AC electrode material[J].Journal of Harbin Institute of Technology,2015,47(11):118-122.(in Chinese)
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