期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 52, 期 45, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6463/ab3967
关键词
hybrid material; capacitive deionization; desalination; salt adsorption capacity; average salt adsorption rate
资金
- Khalifa University of Science and Technology [CIRA-2018-27]
Capacitive deionization (CDI) is an energy efficient and cost-effective technology for electrosorption of salt ions. In this work, graphene/CNTs/ZnO (FGC-ZnO) with different loading of ZnO (5% and 10%) hybrid material was developed and used as high-performance CDI electrode for the removal of NaCl from saline solution. FE-SEM and HR-TEM images confirmed that the hybrid material has interconnected network with well-ordered structure covering ZnO nanoparticles. The FGC-ZnO-10% hybrid material showed enhanced specific capacitance of 280 F g(-1) at 10 mV s(-1) as compared to FGC-ZnO-5%. Moreover, a high electrosorption capacity of 28.62 mg g(-1) in 600 mg l(-1) NaCl at 1.2 V was obtained with the FGC-ZnO-10% hybrid material in a batch-mode CDI cell. The Kim-Yoon plot demonstrated that the maximum achieved ASAR is 1.004 mg g(-1) min(-1) at 1.2 V. This work suggested that FGC-ZnO-10% material have the potential to be utilized as CDI electrode for the desalination of saline water.
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