Performance of CNT-CNP aerogel as electrode in capacitive deionization system

被引:4
作者
Tabrizi, N. Salman [1 ]
Taleghani, M. Salehi [1 ]
机构
[1] Mat & Energy Res Ctr, Dept Energy, Karaj 31787316, Iran
基金
美国国家科学基金会;
关键词
Desalination; Water treatment; CDI systems; Brackish water; Porous structures; REDUCED GRAPHENE OXIDE; CARBON NANOTUBES; WATER DESALINATION; HYBRID; CDI; ELECTROSORPTION; DISINFECTION; DEPOSITION; DISPERSION; COMPOSITE;
D O I
10.1007/s42823-023-00477-4
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In this study, hybrid aerogels containing carbon nanoparticles (CNP) and multi-walled carbon nanotubes (MWCNT) were synthesized via sol-gel method using resorcinol/formaldehyde precursors through a hydrolysis-condensation reaction mechanism. Porous carbonaceous structures were achieved by freeze-drying of the organic gels followed by controlled carbonization under an inert gas. The samples were characterized by various techniques such as FTIR, BJH, FESEM, CV, and EIS. The specific surface area and total pore volume of the aerogel sample were measured to be as high as 452 m(2)/g and 0.782 cm(3)/g, respectively, thus enhancing the electric double-layer formation. Electrochemical tests on the samples showed a large specific capacitance (212 F/g) and an excellent cyclic stability over 3000 cycles. Performance of the synthesized structures was subsequently assessed as electrodes in a capacitive deionization (CDI) process. At the operating conditions of 1.6 V voltage, flow rate of 20 mL/min, and NaCl concentration of 1000 mg/L a promising adsorption capacity around 42.08 mg/g was achieved.
引用
收藏
页码:1253 / 1263
页数:11
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