Sulfonated GO coated carbon electrodes with cation-selective functions for enhanced capacitive deionization of saltwater
學年 111
學期 1
出版（發表）日期 2022-12-19
作品名稱 Sulfonated GO coated carbon electrodes with cation-selective functions for enhanced capacitive deionization of saltwater
作品名稱（其他語言）
著者 H.-C. Cheng; P.-A. Chen; C.-Y. Peng; S.-H. Liu; H. Paul Wang
單位
出版者
著錄名稱、卷期、頁數 Environmental Technology
摘要 Deionization of salt, contaminated underground and inorganic waste waters for water recycling and reuse is of increasing importance mainly due to the shortage of freshwater worldwide. Membrane capacitive deionization (MCDI) possessing a high electrosorption capacity and energy efficiency has been considered a promising method for desalination. However, the MCDI reaction system has limited applications because of the high interfacial resistance during operation. In the present work, the novel sulfonated graphene oxide (SGO) serving as a hydrophilic cation exchange membrane that was coated directly on the activated carbon (AC) electrode was prepared to enhance capacitive deionization of saltwater. Experimentally, the electrosorption capacity and charge efficiency of the AC/SGO (negative)||AC (positive) electrode pair using the coated SGO thin film increased from 12.8 to 19.8 mg/g and 56.7 to 89.3%, respectively. The enhancements were associated with the reduction of the co-ion effect during electrosorption. The strong negative PhSO3- group grafted on the SGO thin film could selectively accelerate the transport rate of cations during CDI. The increase of the charge efficiency also led to lower implemented current. This work demonstrates a simple, low-cost and effective desalination method that will likely have many new applications especially in water recycling and reuse.
關鍵字 Desalination;capacitive deionization;cation exchange membrane;sulfonated graphene oxide
語言 en
ISSN
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 否
國別 GBR
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/124316 )