activated carbon (AC) was modified with cetyltrimethyl ammonium bromide (CTAB) to enhance the hydrophilicity and electro-adsorption properties of the activated carbon electrode.The properties of the materials before and after modification were characterized and analyzed by scanning electron microscope,specific surface area and aperture analyzer,contact angle measuring instrument,fourier transform infrared spectrometer,electrochemical workstation and so on.the results shown that the specific surface area of the modified CTAB-AC material was lower than that of AC,but its surface hydrophilicity was obviously improved,and the electro-adsorption performance of the CTAB-AC electrode was obviously improved.The specific capacitance was increased from 66.55F·g-1 to 96.57F·g-1,which was increased by 45.11%.The coulombic efficiency was increased from 56% to 83.33%,and the removal ion rate was increased from 35.48% to 51.85%.A reference for the study on the preparation of electroadsorption materials was provided.
Liu Haojie, Li Haihong, Yang Ke
. Preparation and characterization of electro-adsorption material for activated carbon[J]. New Chemical Materials, 2020
, 48(8)
: 194
-197
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.08.043
[1] Yin H,Zhao S,Wan J,et al.Three-dimensional graphene/metal oxide nanoparticle hybrids for high-performance capacitive deionization of saline water[J].Advanced Materials,2013,25(43):6270-6276.
[2] Cohen I,Avraham E,Noked M,et al.Enhanced charge efficiency in capacitive deionization achieved by surface-treated electrodes and by means of a third electrode[J].The Journal of Physical Chemistry C,2011,115(40):19856-19863.
[3] Lee J B,Park K K,Eum H M,et al.Desalination of a thermal power plant wastewater by membrane capacitive deionization[J].Desalination,2006,196(1-3):125-134.
[4] Huang Z H,Yang Z,Kang F,et al.Carbon electrodes for capacitive deionization[J].Journal of Materials Chemistry A,2017,5(2):470-496.
[5] Liu Y,Nie C,Liu X,et al.Review on carbon-based composite materials for capacitive deionization[J].RSC Advances,2015,5(20):15205-15225.
[6] Villar Isabel,Roldan Silvia,Ruiz Vanesa,et al.Capacitive deionization of NaCl solutions with modified activated carbon electrodes[J].Energy Fuels,2010,24:3329-3333.
[7] Xu Z,Li Y,Li D,et al.N-enriched multilayered porous carbon derived from natural casings for high-performance supercapacitors[J].Applied Surface Science,2018,444:661-671.
[8] Zhang J,Lv W,Zheng D,et al.The interplay of oxygen functional groups and folded texture in densified graphene electrodes for compact sodium-ion capacitors[J].Advanced Energy Materials,2018,8(11):1702395-1702401.
[9] 孙中海.活性炭及改性活性炭对溶液中萘、菲、芘的吸附特性研究[D].石河子:石河子大学,2018.
[10] 范玮.黄芪废渣活性炭的制备、改性及其吸附性能研究[D].银川:宁夏医科大学,2017.
[11] Wang Lijie,Sun Fei,Gao Jihui,et al.Adjusting the porosity of coal-based activated carbons based on a catalytic physical activation process for gas and liquid adsorption[J].Energy & Fuels,2018,32(2):1255-1264.
[12] Xu Mengdi,Xing Yaowen,Gui Xiahui,et al.Effect of ultrasonic pretreatment on oxidized coal flotation[J].Energy & Fuels,2017,31(12):14367-14373.
[13] 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,2014,32(1):101-106.
[14] Panagiotis Angelikopoulos,Henry Bock.The differences in surfactant adsorption on carbon nanotubes and their bundles[J].Langmuir,2010,26(2):899-907.
[15] Justin P,Meher S K,Rao G R.Tuning of capacitance behavior of NiO using anionic,cationic,and nonionic surfactants by hydrothermal synthesis[J].The Journal of Physical Chemistry C,2010,114(11):5203-5210.
