TY - JOUR
T1 - Fabrication and utilization of ternary cubical nanostructure modified activated carbon cloth electrodes for capacitive deionization system
AU - Kyaw, Htet Htet
AU - Myint, Myo Tay Zar
AU - Al-Yahmadi, Khadija
AU - Al-Abri, Mohammed
N1 - Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2024/2/1
Y1 - 2024/2/1
N2 - Cubical nanostructure zinc tin oxide (ZTO) was in-situ deposited on activated carbon cloth (ACC) substrate via a co-precipitation method. The amount and size of ZTO on the ACC substrate were varied by changing the different overall metal ion (Sn4+ and Zn2+) concentrations. The surface morphology and crystalline analysis revealed the well distributed cubic shape perovskite ZTO on the ACC substrates. The ZTO-deposited ACC electrodes showed superior electrochemical performances with higher specific capacitance and better ion transfer activity than pristine ACC. ZTO deposited ACC substrates were used as electrodes in a capacitive deionization system. ACC substrate coated with 0.01 M Sn and Zn metal concentrations achieved the best desalination efficiency of 52%, salt adsorption capacity of 45.0 ± 2 mg/g and faster salt adsorption rate of 0.14 mg/g/s compared to the other tested electrodes using 500 ppm NaCl solution. Further desalination of real groundwater (1000 ppm) achieved with ions adsorption improvement of 36% for Na+, 48% for Ca2+, 60% for Mg2+, and 46% for Cl- compared to the pristine ACC. Additionally, compared to the pristine ACC, the ZTO-coated electrode enhanced the ions adsorption rate and reduced energy consumption by 40%. Post surface characterization of used pristine ACC displayed substantial scaling of the minerals from the ground water but ZTO-II electrodes exhibited better stability with less scaling. The outcomes of this study provide a stepping stone for the modification and utilization of electrodes for the real brackish water in the CDI system.
AB - Cubical nanostructure zinc tin oxide (ZTO) was in-situ deposited on activated carbon cloth (ACC) substrate via a co-precipitation method. The amount and size of ZTO on the ACC substrate were varied by changing the different overall metal ion (Sn4+ and Zn2+) concentrations. The surface morphology and crystalline analysis revealed the well distributed cubic shape perovskite ZTO on the ACC substrates. The ZTO-deposited ACC electrodes showed superior electrochemical performances with higher specific capacitance and better ion transfer activity than pristine ACC. ZTO deposited ACC substrates were used as electrodes in a capacitive deionization system. ACC substrate coated with 0.01 M Sn and Zn metal concentrations achieved the best desalination efficiency of 52%, salt adsorption capacity of 45.0 ± 2 mg/g and faster salt adsorption rate of 0.14 mg/g/s compared to the other tested electrodes using 500 ppm NaCl solution. Further desalination of real groundwater (1000 ppm) achieved with ions adsorption improvement of 36% for Na+, 48% for Ca2+, 60% for Mg2+, and 46% for Cl- compared to the pristine ACC. Additionally, compared to the pristine ACC, the ZTO-coated electrode enhanced the ions adsorption rate and reduced energy consumption by 40%. Post surface characterization of used pristine ACC displayed substantial scaling of the minerals from the ground water but ZTO-II electrodes exhibited better stability with less scaling. The outcomes of this study provide a stepping stone for the modification and utilization of electrodes for the real brackish water in the CDI system.
KW - Activated carbon cloth
KW - Capacitive deionization
KW - Dielectric
KW - Groundwater desalination
KW - In-situ deposition
KW - Zinc tin oxide nanostructure
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UR - https://www.mendeley.com/catalogue/62f871a7-0b88-347e-a2bf-e34e7d341e5c/
U2 - 10.1016/j.seppur.2023.125436
DO - 10.1016/j.seppur.2023.125436
M3 - Article
AN - SCOPUS:85174950942
SN - 1383-5866
VL - 330
JO - Separation and Purification Technology
JF - Separation and Purification Technology
M1 - 125436
ER -