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Characteristics and Vanadium Adsorption Performance of Resin/Carbon Composite Electrodes in Capacitive Deionization
Author(s) -
Chen Qi,
Bao Shenxu,
Zhang Yimin
Publication year - 2020
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201900590
Subject(s) - capacitive deionization , adsorption , materials science , activated carbon , electrode , composite number , vanadium , mesoporous material , carbon nanotube , electrochemistry , capacitance , chemical engineering , carbon fibers , supercapacitor , composite material , chemistry , metallurgy , organic chemistry , catalysis , engineering
Activated carbon (AC) and carbon nanotubes (CNTs) were used to fabricate resin/carbon composite electrodes (D314/AC and D314/CNTs). The adsorption characteristics of vanadium (V) on the two electrodes under different pH and voltage conditions were compared in capacitive deionization. Physical and electrochemical studies on the electrodes indicated that micropores and mesopores are well balanced in D314/AC, but mesopores are dominant in D314/CNTs. D314/CNTs showed higher specific capacitance and higher ion adsorption capacity than D314/AC. This study indicated that the adsorption performance of composite electrodes for V is affected by the electrode material, especially the pore properties.