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Title: Plasma Treated Active Carbon for Capacitive Deionization of Saline Water

Journal Article · · Journal of Nanomaterials
ORCiD logo [1]; ORCiD logo [2];  [2];  [3];  [3]; ORCiD logo [2]
  1. Univ. of Aveiro (Portugal). Centre for Mechanical Technology and Automation, Department of Mechanical Engineering; Michigan State Univ., East Lansing, MI (United States). Dept. of Electrical and Computer Engineering and Dept. of Chemical Engineering and Materials Science
  2. Michigan State Univ., East Lansing, MI (United States). Dept. of Electrical and Computer Engineering and Dept. of Chemical Engineering and Materials Science
  3. Univ. of Aveiro (Portugal). Centre for Mechanical Technology and Automation, Department of Mechanical Engineering

The plasma treatment on commercial active carbon (AC) was carried out in a capacitively coupled plasma system using Ar + 10% O2at pressure of 4.0 Torr. The RF plasma power ranged from 50 W to 100 W and the processing time was 10 min. The carbon film electrode was fabricated by electrophoretic deposition. Micro-Raman spectroscopy revealed the highly increased disorder of sp2C lattice for the AC treated at 75 W. An electrosorption capacity of 6.15 mg/g was recorded for the carbon treated at 75 W in a 0.1 mM NaCl solution when 1.5 V was applied for 5 hours, while the capacity of the untreated AC was 1.0 mg/g. The plasma treatment led to 5.09 times increase in the absorption capacity. The jump of electrosorption capacity by plasma treatment was consistent with the Raman spectra and electrochemical double layer capacitance. This work demonstrated that plasma treatment was a potentially efficient approach to activating biochar to serve as electrode material for capacitive deionization (CDI).

Research Organization:
South Dakota State Univ., Brookings, SD (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
FG36-08GO88073
OSTI ID:
1393874
Journal Information:
Journal of Nanomaterials, Vol. 2017; ISSN 1687-4110
Publisher:
HindawiCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

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Electrophoretic deposition of carbon nanotubes–polyacrylic acid composite film electrode for capacitive deionization journal April 2012
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Highly ordered macroporous woody biochar with ultra-high carbon content as supercapacitor electrodes journal December 2013
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