The role of H2 in the growth of carbon nanotubes on an AAO template

Yong Sook Shin; Jun Yong Hong; Dong Heon Ryu; Min Hyung Yum; Ji Hoon Yang; Chong Yun Park; Myeung Hoi Kwon; Ji Beom Yoo; Cheol Woong Yang; Yong Wan Jin; Jong Min Kim

doi:10.3938/jkps.50.1068

The role of H₂ in the growth of carbon nanotubes on an AAO template

Yong Sook Shin
, Jun Yong Hong
, Dong Heon Ryu
, Min Hyung Yum
, Ji Hoon Yang
, Chong Yun Park
, Myeung Hoi Kwon
, Ji Beom Yoo
, Cheol Woong Yang
, Yong Wan Jin
, Jong Min Kim

Department of Advanced Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Carbon nanotubes (CNTs) were synthesized in most pores on an anodic aluminum oxide (AAO) template by using thermal chemical vapor deposition (TCVD). The introduction of H₂ gas into the reacting gas mixture improved the growth of CNTs in the narrow pores of the AAO template. Additionally, H ₂ pre-treatment at 500°C after pore widening significantly improved the crystallinity and the density of the CNTs grown on the AAO template. We found that hydrogen reduction of catalyst metals promotes CNT growth in narrow pores. A subsequent X-ray photoelectron spectroscopy (XPS) analysis revealed that the reduction process reduced oxygen on the oxidized catalyst surface and activated catalytic sites.

Original language	English
Pages (from-to)	1068-1072
Number of pages	5
Journal	Journal of the Korean Physical Society
Volume	50
Issue number	4
DOIs	https://doi.org/10.3938/jkps.50.1068
State	Published - Apr 2007

Keywords

Anodic aluminum oxide template
Carbon nanotube
Thermal chemical vapor deposition

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10.3938/jkps.50.1068

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title = "The role of H2 in the growth of carbon nanotubes on an AAO template",

abstract = "Carbon nanotubes (CNTs) were synthesized in most pores on an anodic aluminum oxide (AAO) template by using thermal chemical vapor deposition (TCVD). The introduction of H2 gas into the reacting gas mixture improved the growth of CNTs in the narrow pores of the AAO template. Additionally, H 2 pre-treatment at 500°C after pore widening significantly improved the crystallinity and the density of the CNTs grown on the AAO template. We found that hydrogen reduction of catalyst metals promotes CNT growth in narrow pores. A subsequent X-ray photoelectron spectroscopy (XPS) analysis revealed that the reduction process reduced oxygen on the oxidized catalyst surface and activated catalytic sites.",

keywords = "Anodic aluminum oxide template, Carbon nanotube, Thermal chemical vapor deposition",

author = "Shin, \{Yong Sook\} and Hong, \{Jun Yong\} and Ryu, \{Dong Heon\} and Yum, \{Min Hyung\} and Yang, \{Ji Hoon\} and Park, \{Chong Yun\} and Kwon, \{Myeung Hoi\} and Yoo, \{Ji Beom\} and Yang, \{Cheol Woong\} and Jin, \{Yong Wan\} and Kim, \{Jong Min\}",

year = "2007",

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doi = "10.3938/jkps.50.1068",

language = "English",

volume = "50",

pages = "1068--1072",

journal = "Journal of the Korean Physical Society",

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TY - JOUR

T1 - The role of H2 in the growth of carbon nanotubes on an AAO template

AU - Shin, Yong Sook

AU - Hong, Jun Yong

AU - Ryu, Dong Heon

AU - Yum, Min Hyung

AU - Yang, Ji Hoon

AU - Park, Chong Yun

AU - Kwon, Myeung Hoi

AU - Yoo, Ji Beom

AU - Yang, Cheol Woong

AU - Jin, Yong Wan

AU - Kim, Jong Min

PY - 2007/4

Y1 - 2007/4

N2 - Carbon nanotubes (CNTs) were synthesized in most pores on an anodic aluminum oxide (AAO) template by using thermal chemical vapor deposition (TCVD). The introduction of H2 gas into the reacting gas mixture improved the growth of CNTs in the narrow pores of the AAO template. Additionally, H 2 pre-treatment at 500°C after pore widening significantly improved the crystallinity and the density of the CNTs grown on the AAO template. We found that hydrogen reduction of catalyst metals promotes CNT growth in narrow pores. A subsequent X-ray photoelectron spectroscopy (XPS) analysis revealed that the reduction process reduced oxygen on the oxidized catalyst surface and activated catalytic sites.

AB - Carbon nanotubes (CNTs) were synthesized in most pores on an anodic aluminum oxide (AAO) template by using thermal chemical vapor deposition (TCVD). The introduction of H2 gas into the reacting gas mixture improved the growth of CNTs in the narrow pores of the AAO template. Additionally, H 2 pre-treatment at 500°C after pore widening significantly improved the crystallinity and the density of the CNTs grown on the AAO template. We found that hydrogen reduction of catalyst metals promotes CNT growth in narrow pores. A subsequent X-ray photoelectron spectroscopy (XPS) analysis revealed that the reduction process reduced oxygen on the oxidized catalyst surface and activated catalytic sites.

KW - Anodic aluminum oxide template

KW - Carbon nanotube

KW - Thermal chemical vapor deposition

UR - https://www.scopus.com/pages/publications/34248354415

U2 - 10.3938/jkps.50.1068

DO - 10.3938/jkps.50.1068

M3 - Article

AN - SCOPUS:34248354415

SN - 0374-4884

VL - 50

SP - 1068

EP - 1072

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - 4

ER -

The role of H₂ in the growth of carbon nanotubes on an AAO template

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Keywords

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