Title

Performance Evaluation of Asymmetric Capacitive Deionization with Carbon Aerogel based Fiber-Paper Electrodes: Effect of Gold Deposition vs. Acid Treatment

Abstract

Carbon aerogel fiber-paper based electrodes were subjected to nitric acid treatment and gold deposition in this study of capacitive deionization (CDI) experiments. The performance of each electrode was assessed based on their adsorption capacities in four different electrode-configurations (two symmetric and two asymmetric). The characterization of the electrodes was conducted following scanning electron microscopy, three-dimensional laser confocal microscopy, cyclic voltammetry and Fourier transform spectroscopy. Surface area and porosity measurements were conducted using BET isotherm analysis. The highest salt removal capacity in this study was 8.0 mg/g of NaCl in asymmetric electrodes configuration with the gold-deposited electrode used as anode and untreated/uncoated electrode used as cathode.

Department(s)

Civil, Architectural and Environmental Engineering

Keywords and Phrases

CDI; Capacitive desalination; Deionization; Carbon-based electrodes; Nitric acid-treated electrodes; Gold-deposited electrodes; Asymmetric capacitive deionization

International Standard Serial Number (ISSN)

1572-6657

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2019 Elsevier B.V., All rights reserved.

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