[논문]Design of zinc oxide nanoparticles and graphene hydrogel co-incorporated activated carbon for efficient capacitive deionization

Yasin, Ahmed S.; Yousef Mohamed, Ahmed; Kim, Dong Hyun; Luu Luyen Doan, Thi; Chougule, S.S; Jung Professor, Namgee; Nam Dr., Sungchan; Lee Professor, Kyubock

doi:10.1016/j.seppur.2021.119428

[해외논문] Design of zinc oxide nanoparticles and graphene hydrogel co-incorporated activated carbon for efficient capacitive deionization

Separation and purification technology, v.277, 2021년, pp.119428 -

Yasin, Ahmed S. (Graduate School of Energy Science and Technology, Chungnam National University) , Yousef Mohamed, Ahmed (IPIT & Department of Physics, Jeonbuk National University) , Kim, Dong Hyun (Graduate School of Energy Science and Technology, Chungnam National University) , Luu Luyen Doan, Thi (Department of Bionanotechnology and Bioconvergence Engineering, Graduate School, Jeonbuk National University) , Chougule, S.S (Graduate School of Energy Science and Technology, Chungnam National University) , Jung Professor, Namgee (Graduate School of Energy Science and Technology, Chungnam National University) , Nam Dr., Sungchan (Greenhouse Gas Research Laboratory, Korea Institute of Energy Research) , Lee Professor, Kyubock (Graduate School of Energy Science and Technology, Chungnam National University)

Abstract ▼ AI-Helper

Abstract The development of high-performance electrode materials is the main factor in improving the efficiency of the capacitive deionization (CDI) process. Activated carbon is the most extensively used electrode material because of its excellent physicochemical properties and low cost; however, its desalination application has been largely limited owing to its poor wettability. In this study, we prepared a ZnO nanoparticle-incorporated activated carbon/graphene hydrogel composite via ultrasonication and freeze-drying, followed by a hydrothermal treatment. As the hydrophilicity, electrical conductivity, and electrosorptive capacity were improved owing to the presence of the graphene hydrogel and ZnO nanoparticles, the as-fabricated nanocomposite showed excellent specific capacitance (746.5F g−1 at 10 mV s−1), salt removal efficiency (83.65%), and electrosorptive capacity (9.95 mg g−1). Thus, the nanocomposite design devised in this study has potential in realizing the practical CDI applications of activated carbon. Highlights Graphene hydrogel and zinc oxide nanoparticles incorporating activated carbon was fabricated. The synthesized nanocomposite exhibited good electrochemical performance. A high electrosorption capacity of 9.95 mg g−1 is achieved. Graphical abstract [DISPLAY OMISSION]

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