Regulating Surface Wettability and Charge Density of Porous Carbon Particles by In Situ Growth of Polyaniline for Constructing an Efficient Electrical Percolation Network in Flow-Electrode Capacitive Deionization

Both electrical conductivity and surface wettability are required for the selection of active carbon materials in flow-electrode capacitive deionization, while a trade-off exists between these two properties. In this work, a hybrid material with a thin layer of polyaniline (PANI) coating on activate...

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Publié dans:Langmuir : the ACS journal of surfaces and colloids. - 1985. - 38(2022), 40 vom: 11. Okt., Seite 12263-12272
Auteur principal: Xiong, Jingjing (Auteur)
Autres auteurs: Zhu, Zetao, Ye, Wenkai, Mu, Liwen, Lu, Xiaohua, Zhu, Jiahua
Format: Article en ligne
Langue:English
Publié: 2022
Accès à la collection:Langmuir : the ACS journal of surfaces and colloids
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520 |a Both electrical conductivity and surface wettability are required for the selection of active carbon materials in flow-electrode capacitive deionization, while a trade-off exists between these two properties. In this work, a hybrid material with a thin layer of polyaniline (PANI) coating on activated carbon (AC/PANI) was successfully developed to retain excellent electrical conductivity and acquire good surface wettability. By adjusting the dosage of initiator, AC/PANI composites with different loading fractions of PANI were obtained. The electrochemical testing demonstrated that the AC/PANI composites have higher specific capacitance and lower ion diffusion resistance compared to pure AC, resulting in better desalinization performance. Specifically, with a feed concentration of 1600 mg/L, excellent adsorption capacity and high charge efficiency can be simultaneously achieved at 13.51 mg/g and 92.21%, respectively. Benefiting from the formation of a continuous electrical percolation network and reduced solid/liquid interfacial transport resistance, a 39% enhancement of average salt adsorption rate (from 0.54 to 0.75 μmol/min/cm2) was obtained 
650 4 |a Journal Article 
700 1 |a Zhu, Zetao  |e verfasserin  |4 aut 
700 1 |a Ye, Wenkai  |e verfasserin  |4 aut 
700 1 |a Mu, Liwen  |e verfasserin  |4 aut 
700 1 |a Lu, Xiaohua  |e verfasserin  |4 aut 
700 1 |a Zhu, Jiahua  |e verfasserin  |4 aut 
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