Effective Modified Carbon Nanofibers as Electrodes for Capacitive Deionization Process  

作　　者：Nasser A. M. Barakat Ahmed G. El-Deen Khalil Abdelrazek Khalil 

机构地区：[1]1Organic Materials and Fiber Engineering Department, Chonbuk National University, Jeonju, South Korea 2Chemical Engineering Department, Faculty of Engineering, Minia University, El-Minia, Egypt [2]BioNanosystem Department, Chonbuk National University, Jeonju, South Korea [3]Mechanical Engineering Department, (NPST), King Saud University, Riyadh, Saudi Arabia

出　　处：《Journal of Materials Science and Chemical Engineering》2014年第1期38-42,共5页材料科学与化学工程（英文）

摘　　要：Carbon materials have the advantages of good electrical conductivity and excellent chemical stability, so many carbon materials have been introduced as electrodes for the capacitive deionization (CDI) process. Due to the low surface area compared to the other nanocarbonaceous materials, CNFs performance as electrode in the CDI units is comparatively low. This problem has been overcome by preparing high surface area carbon nanofibers and by creating numerous long pores on the nanofibers surface. The modified CNFs have been synthesized using low cost, high yield and facile method;electrospinning technique. Stabilization and graphitization of electrospun nanofiber mats composed of polyacrylonitrile (PAN) and poly (methyl methacrylate) (PMMA) leads form longitudinal pores CNFs. The utilized characterizations indicated that the CNFs obtained from electrospun solution having 50% PMMA have surface area of 181 m2/g which are more than the conventional CNFs. Accordingly, these nanofibers revealed salt removal efficiency of ~90% and specific capacitance of 237 F/g.Carbon materials have the advantages of good electrical conductivity and excellent chemical stability, so many carbon materials have been introduced as electrodes for the capacitive deionization (CDI) process. Due to the low surface area compared to the other nanocarbonaceous materials, CNFs performance as electrode in the CDI units is comparatively low. This problem has been overcome by preparing high surface area carbon nanofibers and by creating numerous long pores on the nanofibers surface. The modified CNFs have been synthesized using low cost, high yield and facile method;electrospinning technique. Stabilization and graphitization of electrospun nanofiber mats composed of polyacrylonitrile (PAN) and poly (methyl methacrylate) (PMMA) leads form longitudinal pores CNFs. The utilized characterizations indicated that the CNFs obtained from electrospun solution having 50% PMMA have surface area of 181 m2/g which are more than the conventional CNFs. Accordingly, these nanofibers revealed salt removal efficiency of ~90% and specific capacitance of 237 F/g.

关 键 词：Capacitive DEIONIZATION CARBON NANOFIBERS ELECTROSPINNING Multi-Channels CNFs DESALINATION 

分 类 号：O6[理学—化学]