Plasma Treated Active Carbon for Capacitive Deionization of Saline Water
- 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
- Michigan State Univ., East Lansing, MI (United States). Dept. of Electrical and Computer Engineering and Dept. of Chemical Engineering and Materials Science
- 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
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