Effect of surface modification of carbon felts on capacitive deionization for desalination
(주)코리아스칼라
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- 2016.04.02
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- 2015.04
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서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon letters / 16권 / 2호
ㆍ저자명 : Jong-Ho Lee, Hong-Joo Ahn, Donghwan Cho, Jeong-Il Youn, Young-Jig Kim, Han-Jun Oh
목차
Abstract
1. Introduction
2. Experimental
3. Results and Discussion
3.1. Surface characteristics of carbon felt electrode
3.2. Electrochemical behaviors
3.3. Capacitive deionization
4. Conclusions
References
영어 초록
Surface modified carbon felts were utilized as an electrode for the removal of inorganic ions from seawater. The surfaces of the carbon felts were chemically modified by alkaline and acidic solutions, respectively. The potassium hydroxide (KOH) modified carbon felt exhibited high Brunauer-Emmett-Teller (BET) surface areas and large pore volume, and oxygencontaining functional groups were increased during KOH chemical modification. However, the BET surface area significantly decreased by nitric acid (HNO3) chemical modification due to severe chemical dissolution of the pore structure. The capability of electrosorption by an electrical double-layer and the efficiency of capacitive deionization (CDI) thus showed the greatest enhancement by chemical KOH modification due to the appropriate increase of carboxyl and hydroxyl functional groups and the enlargement of the specific surface area.
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