scholarly journals Titanium Dioxide/Activated Carbon Electrode with Polyurethane Binder for the Removal of Indium Ions via Capacitive Deionization

Processes ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 1427
Author(s):  
Clive H. Yen ◽  
Shun-Hsing Chuang ◽  
Ren-Yi Huang ◽  
Po-I Liu ◽  
Min-Chao Chang ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Activated Carbon ◽  
Polyvinylidene Fluoride ◽  
Electrochemical Impedance ◽  
Anatase Tio2 ◽  
Carbon Electrode ◽  
Capacitive Deionization ◽  
Microwave Assisted ◽  
Ionothermal Synthesis ◽  
Binder Material

The process of removing indium ions from aqueous solutions by applying capacitive deionization (CDI) is reported in this manuscript. First, a modified carbon material was prepared by incorporating titanium dioxide (TiO2) into activated carbon (AC). A microwave-assisted ionothermal synthesis (MAIS) method was used to produce evenly distributed nanostructured anatase TiO2 on the surface of AC. A polyurethane (PU) elastomer was then synthesized as the binder material instead of using conventional polyvinylidene fluoride (PVDF). By combining the aforementioned materials, a MAIS TiO2/AC-PU electrode was synthesized and applied to CDI tests. Scanning electron microscopy (SEM) was used to characterize the size and dispersion of the composites. For electrochemical properties, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were used to analyze the synthesized electrode. The performance of the prepared electrode during the CDI process was tested in different concentrations of indium solutions. It was discovered that the indium removal efficiency can be as high as 84% in 1 and 5 ppm of indium solutions.

High Performance Hybrid Capacitive Deionization with Ag-coated Activated Carbon Electrode

2021 ◽  
Author(s):  
Hongsik Yoon ◽  
Jiho Lee ◽  
Taijin Min ◽  
Gunhee Lee ◽  
Minsub Oh
Keyword(s):  
Activated Carbon ◽  
Water Treatment ◽  
Industrial Application ◽  
High Performance ◽  
Treatment System ◽  
Carbon Electrode ◽  
Capacitive Deionization ◽  
Water Treatment System

Capacitive deionization (CDI) has been highlighted as a promising electrochemical water treatment system. However, the low deionization capacity of CDI electrodes has been a major limitation for its industrial application,...

An asymmetrical activated carbon electrode configuration for increased pore utilization in a membrane-assisted capacitive deionization system

Carbon ◽  
2016 ◽  
Vol 110 ◽  
pp. 521
Author(s):  
Jiyoung Kim ◽  
Dong-Hyun Peck ◽  
Byungrok Lee ◽  
Seong-Ho Yoon ◽  
Doo-Hwan Jung
Keyword(s):  
Activated Carbon ◽  
Electrode Configuration ◽  
Carbon Electrode ◽  
Capacitive Deionization

scholarly journals Production of Activated Carbon Electrode for Energy Storage Application in Supercapacitors via KOH Activation of Waste Termite Biomass

2021 ◽  
Author(s):  
Godwin Mong Kalu-Uka ◽  
Shubham Kumar ◽  
Abraham Chinedu Kalu-Uka ◽  
Shruti Vikram ◽  
Gina Odochi Ihekweme ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Energy Storage ◽  
Specific Capacitance ◽  
Global Economy ◽  
Electrochemical Impedance ◽  
Koh Activation ◽  
Activation Process ◽  
Carbon Electrode ◽  
Xps Characterization ◽  
One Step

Abstract The devastating effects of termites on wood and the contribution of termite activities to the rising levels of atmospheric CO2 and CH4 constitute a serious threat to global economy and the ozone layer. In order to stall the contribution of termites to the rising levels of greenhouse gases, this work considers the conversion of termite biomass to activated carbon electrode. The waste termite biomass obtained during the production of termite biodiesel was converted to activated carbon electrode by a one-step carbonization-activation process, using potassium hydroxide as activating agent. The optimal specific surface area of the activated carbon was recorded at 900 oC, 9 h and 3:1 KOH-biomass ratio. The surface morphology and functionalization of the activated carbon were examined using the SEM, TEM, XRD, Raman and XPS characterization techniques. The electrochemical performance of the activated carbon electrode was tested in aqueous (1 M H2SO4) and ionic liquid (1 M EMImBF4) electrolytes. Results obtained from cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance experiments showed that the specific capacitance of the activated carbon electrode was higher in 1 M H2SO4 (78 Fg-1 at 0.5 Ag-1) than in 1 M EMImBF4 (53 Fg-1 at 0.5 Ag-1). However, after completing 10, 000 chare-discharge cycles at 10 Ag-1, the activated carbon electrode lost ~ 5% of its specific capacitance in 1 M H2SO4 and ~ 2% of its capacitance in 1 M EMImBF4. Overall, the results showed that waste termite biomass could be valorised in the production of activated carbon for energy storage in supercapacitors.

Highly mesoporous activated carbon electrode for capacitive deionization

2013 ◽  
Vol 103 ◽  
pp. 216-221 ◽  
Author(s):  
Gang Wang ◽  
Bingqing Qian ◽  
Qiang Dong ◽  
Junyu Yang ◽  
Zongbin Zhao ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Electrode ◽  
Capacitive Deionization ◽  
Mesoporous Activated Carbon
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