Three-dimensional graphene oxide and polyvinyl alcohol composites as structured activated carbons for capacitive desalination

被引：66

作者：

Leong, Zhi Yi ^{[1
]}

Lu, Guo ^{[1
]}

Yang, Hui Ying ^{[1
]}

机构：

[1] Singapore Univ Technol & Design, Pillar Engn Prod Dev EPD, 8 Somapah Rd, Singapore 487372, Singapore

来源：

DESALINATION | 2019年 / 451卷 / 172-181期

基金：

新加坡国家研究基金会;

关键词：

WATER DESALINATION; DEIONIZATION; PERFORMANCE; ELECTRODES; NANOCOMPOSITE; HYBRID; GLUTARALDEHYDE; TECHNOLOGY; NANOTUBES; HYDROGEL;

D O I：

10.1016/j.desal.2017.07.018

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Membrane capacitive deionization (MCDI) is a technique that is derived from conventional capacitive deionization (CDI). Additional ion-exchange membranes are included in the MCDI cell to prevent ion-expulsion and improve cyclability. As it stands, MCDI represents the most feasible option for large scale desalination to take place. In this work, we investigate the desalination performance of a novel structured activated carbon material synthesized from the assembly of polyvinyl alcohol (PVA) on graphene oxide (GO). A hydrothermal treatment causes self -assembly of the PVA covered GO sheets and the product is a polymeric framework supported by reduced GO sheets. A further activation process by KOH produces the structured activated carbon (AC). These new structured ACs possess unique morphologies and exhibit high adsorption capacities (> 30 mg g(-1)) which far surpass traditional ACs.

引用

页码：172 / 181

页数：10

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