ELECTROSORPTION OF SALT IONS USING TITANIUM DIOXIDE-DECORATED rGO AS A PROMISING ELECTRODE CANDIDATE

M. Nassara, Mamdouh; S. Mahmoud, Mohamed; Obaid, M.; M. Moustafa, Hager

doi:10.21608/jaet.2020.76762

ELECTROSORPTION OF SALT IONS USING TITANIUM DIOXIDE-DECORATED rGO AS A PROMISING ELECTRODE CANDIDATE

Authors

¹ Chemical Engineering Department, Faculty of Engineering, Minia University, Minia, 61111, Egypt

² Department of engineering, Collage of Applied Sciences, Suhar, 311, Oman

³ Global Desalination Research Center (GDRC), School of Earth Sciences and Environmental Engineering,, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, South Korea

10.21608/jaet.2020.76762

Abstract

Transition metal oxide (TMO) nanoparticles are particularly important in capacitive deionization desalination due to their wide areas of application. The performance of rGO decorated with TiO₂nanoparticles has been investigated. Hammer method synthesizes the electrodes, followed by a hydrothermal treatment. The morphological properties of the rGO and rGO-15TiO₂ were characterized by FE-SEM and TEM measurements. The TEM images indicated the random distribution of titanium oxides in the rGO layer, while SEM images showed that the TiO₂ homogeneously covered and distributed on rGO sheets for rGO-15TiO₂. The performance of the prepared nanocomposite electrode's electrochemical conduct was assessed by cyclic voltammetry (CV) ex-situ. In the three-electrode system, was observed from -0.6 to 0.6 V in 1 M aqueous NaCl. The results illustrated that rGO-15(TiO₂) electrode showed the best performance in the CDI, achieving the highest specific capacitance of 473.9/g at 25mV/sec. The results indicating that rGO-15TiO₂ is a novel electrode material for CDI.

Keywords

Main Subjects

Chemical Engineering.

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