Journal
DESALINATION
Volume 445, Issue -, Pages 149-158Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.desal.2018.08.001
Keywords
Capacitive deionization; Benzidine; Graphene oxide; Functionalization
Categories
Funding
- Natural Science Foundation of China [51402151, 51408297, 51778281]
- Natural Science Foundation of the Jiangsu province [BK20171342, BK20161493]
- QingLan Project, PAPD, Jiangsu Province
- Zijin Intelligent Program, the Nanjing University of Science and Technology
- Fundamental Research Funds for the Central Universities [30917011309]
- Nanjing Normal University [184080H202B146]
Ask authors/readers for more resources
Capacitive deionization (CDI) is a promising technology for water 0. The electrode material plays a vital role in electrosorption capacity. Its porous nanostructure can promote capacitive deionization performance. Here, a one-pot synthesis of p-phenylenediamine-or benzidine-(DAB) functionalized graphene (DAB-mGO) was achieved using graphene oxide (GO) as a precursor by simultaneous nucleophilic addition, an amide reaction and an electrostatic self-assembly technique. DAB-mGO exhibits a significantly increased conductivity, specific surface area and pore volume compared with GO, which indicates that it can be used as a CDI electrode material for desalination in brackish water. DAB-mGO(130) that was obtained at 130 degrees C exhibited electrosorption capacities of 7.88, 8.02 and 13.55 mg/g in Na+, Me+, Ca2+ solutions, respectively, at 1.4 V. These values are 1.3-1.5 times higher than commercial activated carbon. These observations indicate that the simple organic functionalization of GO is an effective approach to increase the CDI performance because of the generation of useful porous nanostructures. A rational combination of organic molecules and inorganic GO can be used to fabricate environmental and economical CDI electrode for application in CDI and energy storage.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available