The study of controlling pore size on electrospun carbon nanofibers for hydrogen adsorption

被引：133

作者：

Im, Ji Sun ^{[1
]}

Park, Soo-Jin ^{[2
]}

Kim, Tae Jin ^{[2
]}

Kim, Young Ho ^{[3
]}

Lee, Young-Seak ^{[1
,3
]}

机构：

[1] Chungnam Natl Univ, Dept Nano Technol, Daejeon 305764, South Korea

[2] Inha Univ, Dept Chem, Incheon 402751, South Korea

[3] Chungnam Natl Univ, Dept Fine Chem Engn & Appl Chem, Daejeon 305764, South Korea

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2008年 / 318卷 / 01期

关键词：

hydrogen adsorption; carbon fiber; electrospinning; chemical activation; physical activation;

D O I：

10.1016/j.jcis.2007.10.024

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Polyacrylonitrile (PAN)-based carbon nanofibers (CNFs) were prepared by using electrospinning method and heat treatment to get the media for hydrogen adsorption storage. Potassium hydroxide and zinc chloride activations were conducted to increase specific surface area and pore volume of CNFs. To investigate the relation between pore structure and the capacity of hydrogen adsorption, textural properties of activated CNFs were studied with micropore size distribution, specific surface area, and total pore volume by using BET (Brunauer-Emmett-Teller) surface analyzer apparatus and the capacity of hydrogen adsorption was evaluated by PCT (pressure-composition-temperature) hydrogen adsorption analyzer apparatus with volumetric method. The surface morphology of activated CNFs was observed by SEM (scanning electron microscope) images to investigate the surface change through activation. Even though specific surface area and total pore volume were important factors for increasing the capacity of hydrogen adsorption, the pore volume which has pore width (0.6-0.7 nm) was a much more effective factor than specific surface area and pore volume in PAN-based electrospun activated CNFs. (c) 2007 Elsevier Inc. All rights reserved.

引用

页码：42 / 49

页数：8

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