Journal
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Volume 822, Issue -, Pages 81-88Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2018.05.024
Keywords
Carbon nanofibers aerogels; Capacitive deionization; Nitrogen doping; Desalination
Categories
Funding
- Natural Science Foundation of Anhui Province [1508085ME104]
- Outstanding Youth Talents in Anhui Provincial Education Department [2017GXBJZD47]
- Scientific Research Foundation of Suzhou University [2016XJXS05]
- Important Project of Anhui Provincial Education Department [KJ2018A0446]
- Innovative Research Team of Anhui Provincial Education Department [2016SCXPTTD]
- Key Discipline of Material Science and Engineering of Suzhou University [2017XJZDXK3]
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In this work, nitrogen-doped carbon nanofiber aerogels (N-CNFA) were successfully prepared by freeze-drying and thermal treatment of bacterial cellulose in NH3 atmosphere. Scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy were used to characterize their morphology and structure. Nitrogen adsorption-desorption isotherms show that nitrogen doping can improve the specific surface area of CNFA obviously. The electrochemical measurements show that N-CNFA possesses higher specific capacitance and lower charge transfer resistance than undoped CNFA. The electrosorption capacity of N-CNFA can reach up to 17.29 mg g(-1) in 1000 mg L-1 NaCl solution, much higher than that of undoped CNFA (12.81 mg g(-1)). These results indicate that N-CNFA should be a promising candidate for CDI application.
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