Longitudinal unzipped carbon nanotubes with high specific surface area and trimodal pore structure

Joah Han, Wonbin Kim, Hyun Kyung Kim, Hee Chang Youn, Joong Tark Han, Woong Kim, Kwang Chul Roh

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This study reports unzipped carbon nanotubes (CNTs) with a trimodal (micro-meso-macro) pore structure using KOH as the activating agent. It is possible to unzip CNTs under severe conditions (in our study, CNT (C)/KOH = 1 : 10 (w/w) at 1000 °C) in contrast to the surface activation of CNTs under general conditions (in our study, C/KOH = 1 : 4 (w/w) at 900 °C). After severe alkali activation, various pores were initially formed on the surface. Subsequently, a longitudinally unzipped structure was obtained as the individual pores connected. In contrast with other methods used to prepare unzipped and porous CNTs, this method is economical and scalable because it enables a one-step synthesis of unzipped and porous CNTs. As per the non-localized density functional theory, the distribution of micro-meso pores provides evidence of unzipping because the peak for pore sizes -1. Thus, the method is suitable for fabrication of unzipped porous CNTs, which demonstrate potential as electrode materials for ultracapacitors.

Original languageEnglish
Pages (from-to)8661-8668
Number of pages8
JournalRSC Advances
Volume6
Issue number11
DOIs
Publication statusPublished - 2016

Fingerprint

Carbon Nanotubes
Pore structure
Specific surface area
Carbon nanotubes
Chemical activation
Alkalies
Pore size
Density functional theory
Macros
Fabrication
Electrodes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Longitudinal unzipped carbon nanotubes with high specific surface area and trimodal pore structure. / Han, Joah; Kim, Wonbin; Kim, Hyun Kyung; Youn, Hee Chang; Han, Joong Tark; Kim, Woong; Roh, Kwang Chul.

In: RSC Advances, Vol. 6, No. 11, 2016, p. 8661-8668.

Research output: Contribution to journalArticle

Han, Joah ; Kim, Wonbin ; Kim, Hyun Kyung ; Youn, Hee Chang ; Han, Joong Tark ; Kim, Woong ; Roh, Kwang Chul. / Longitudinal unzipped carbon nanotubes with high specific surface area and trimodal pore structure. In: RSC Advances. 2016 ; Vol. 6, No. 11. pp. 8661-8668.
@article{462634d2059446febc46d06f89714871,
title = "Longitudinal unzipped carbon nanotubes with high specific surface area and trimodal pore structure",
abstract = "This study reports unzipped carbon nanotubes (CNTs) with a trimodal (micro-meso-macro) pore structure using KOH as the activating agent. It is possible to unzip CNTs under severe conditions (in our study, CNT (C)/KOH = 1 : 10 (w/w) at 1000 °C) in contrast to the surface activation of CNTs under general conditions (in our study, C/KOH = 1 : 4 (w/w) at 900 °C). After severe alkali activation, various pores were initially formed on the surface. Subsequently, a longitudinally unzipped structure was obtained as the individual pores connected. In contrast with other methods used to prepare unzipped and porous CNTs, this method is economical and scalable because it enables a one-step synthesis of unzipped and porous CNTs. As per the non-localized density functional theory, the distribution of micro-meso pores provides evidence of unzipping because the peak for pore sizes -1. Thus, the method is suitable for fabrication of unzipped porous CNTs, which demonstrate potential as electrode materials for ultracapacitors.",
author = "Joah Han and Wonbin Kim and Kim, {Hyun Kyung} and Youn, {Hee Chang} and Han, {Joong Tark} and Woong Kim and Roh, {Kwang Chul}",
year = "2016",
doi = "10.1039/c5ra22527b",
language = "English",
volume = "6",
pages = "8661--8668",
journal = "RSC Advances",
issn = "2046-2069",
publisher = "Royal Society of Chemistry",
number = "11",

}

TY - JOUR

T1 - Longitudinal unzipped carbon nanotubes with high specific surface area and trimodal pore structure

AU - Han, Joah

AU - Kim, Wonbin

AU - Kim, Hyun Kyung

AU - Youn, Hee Chang

AU - Han, Joong Tark

AU - Kim, Woong

AU - Roh, Kwang Chul

PY - 2016

Y1 - 2016

N2 - This study reports unzipped carbon nanotubes (CNTs) with a trimodal (micro-meso-macro) pore structure using KOH as the activating agent. It is possible to unzip CNTs under severe conditions (in our study, CNT (C)/KOH = 1 : 10 (w/w) at 1000 °C) in contrast to the surface activation of CNTs under general conditions (in our study, C/KOH = 1 : 4 (w/w) at 900 °C). After severe alkali activation, various pores were initially formed on the surface. Subsequently, a longitudinally unzipped structure was obtained as the individual pores connected. In contrast with other methods used to prepare unzipped and porous CNTs, this method is economical and scalable because it enables a one-step synthesis of unzipped and porous CNTs. As per the non-localized density functional theory, the distribution of micro-meso pores provides evidence of unzipping because the peak for pore sizes -1. Thus, the method is suitable for fabrication of unzipped porous CNTs, which demonstrate potential as electrode materials for ultracapacitors.

AB - This study reports unzipped carbon nanotubes (CNTs) with a trimodal (micro-meso-macro) pore structure using KOH as the activating agent. It is possible to unzip CNTs under severe conditions (in our study, CNT (C)/KOH = 1 : 10 (w/w) at 1000 °C) in contrast to the surface activation of CNTs under general conditions (in our study, C/KOH = 1 : 4 (w/w) at 900 °C). After severe alkali activation, various pores were initially formed on the surface. Subsequently, a longitudinally unzipped structure was obtained as the individual pores connected. In contrast with other methods used to prepare unzipped and porous CNTs, this method is economical and scalable because it enables a one-step synthesis of unzipped and porous CNTs. As per the non-localized density functional theory, the distribution of micro-meso pores provides evidence of unzipping because the peak for pore sizes -1. Thus, the method is suitable for fabrication of unzipped porous CNTs, which demonstrate potential as electrode materials for ultracapacitors.

UR - http://www.scopus.com/inward/record.url?scp=84961292306&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84961292306&partnerID=8YFLogxK

U2 - 10.1039/c5ra22527b

DO - 10.1039/c5ra22527b

M3 - Article

AN - SCOPUS:84961292306

VL - 6

SP - 8661

EP - 8668

JO - RSC Advances

JF - RSC Advances

SN - 2046-2069

IS - 11

ER -