Titanium dioxide/activated carbon electrode with polyurethane binder for the removal of indium ions via capacitive deionization

Clive H. Yen, Shun Hsing Chuang, Ren Yi Huang, Po I. Liu, Min Chao Chang, Ren Yang Horng

研究成果: 雜誌貢獻期刊論文同行評審

摘要

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.

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文章編號1427
期刊Processes
9
發行號8
DOIs
出版狀態已出版 - 8月 2021

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