Catalytic growth of carbon nanoballs with and without cobalt encapsulation

Ziyi Zhong; Huayi Chen; Songbei Tang; Jun Ding; Jianyi Lin; Kuang Lee Tan

doi:10.1016/S0009-2614(00)01080-0

Catalytic growth of carbon nanoballs with and without cobalt encapsulation

Ziyi Zhong^*, Huayi Chen, Songbei Tang, Jun Ding, Jianyi Lin, Kuang Lee Tan

^*Corresponding author for this work

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

80 Scopus citations

Abstract

Carbon nanoballs encapsulated with cobalt were prepared by decomposition of methane. After acid treatment, the encapsulated cobalt can be removed to produce hollow carbon nanoballs. The content of hollow carbon nanoballs as high as 90 vol% in acid-treated carbon product can be obtained by increasing the content of cobalt from 50 to 75 mol% in the catalysts. However, under the same catalytic conditions, the main carbon products are multi walled carbon tubes (MWNTs) over Co/Al₂O₃, Co/La₂O₃, Co/CeO₂ and Ni/MgO catalysts by decomposition of CH₄, or by decomposition of CO over Co/MgO catalysts. These carbon nanoballs encapsulated with cobalt are novel magnetic materials.

Original language	English
Pages (from-to)	41-47
Number of pages	7
Journal	Chemical Physics Letters
Volume	330
Issue number	1-2
DOIs	https://doi.org/10.1016/S0009-2614(00)01080-0
State	Published - 3 Nov 2000
Externally published	Yes

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@article{e23b23b44e0449a1b9a2eb83ba2e6f4a,

title = "Catalytic growth of carbon nanoballs with and without cobalt encapsulation",

abstract = "Carbon nanoballs encapsulated with cobalt were prepared by decomposition of methane. After acid treatment, the encapsulated cobalt can be removed to produce hollow carbon nanoballs. The content of hollow carbon nanoballs as high as 90 vol% in acid-treated carbon product can be obtained by increasing the content of cobalt from 50 to 75 mol% in the catalysts. However, under the same catalytic conditions, the main carbon products are multi walled carbon tubes (MWNTs) over Co/Al2O3, Co/La2O3, Co/CeO2 and Ni/MgO catalysts by decomposition of CH4, or by decomposition of CO over Co/MgO catalysts. These carbon nanoballs encapsulated with cobalt are novel magnetic materials.",

author = "Ziyi Zhong and Huayi Chen and Songbei Tang and Jun Ding and Jianyi Lin and {Lee Tan}, Kuang",

note = "Funding Information: We thank Dr. Ping Chen, Mr. Qi Hong and Ms. Lin Ji for their technical assistance and helpful discussions, Dr. Yunjie Chen in Department of Materials Science and Ms. Tjiu Wuiwui in Department of Physics for SEM and HRTEM measurements, respectively. The financial support from National Science and Technology Board of Singapore (GR6773) is gratefully acknowledged. ",

year = "2000",

month = nov,

day = "3",

doi = "10.1016/S0009-2614(00)01080-0",

language = "英语",

volume = "330",

pages = "41--47",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier",

number = "1-2",

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TY - JOUR

T1 - Catalytic growth of carbon nanoballs with and without cobalt encapsulation

AU - Zhong, Ziyi

AU - Chen, Huayi

AU - Tang, Songbei

AU - Ding, Jun

AU - Lin, Jianyi

AU - Lee Tan, Kuang

N1 - Funding Information: We thank Dr. Ping Chen, Mr. Qi Hong and Ms. Lin Ji for their technical assistance and helpful discussions, Dr. Yunjie Chen in Department of Materials Science and Ms. Tjiu Wuiwui in Department of Physics for SEM and HRTEM measurements, respectively. The financial support from National Science and Technology Board of Singapore (GR6773) is gratefully acknowledged.

PY - 2000/11/3

Y1 - 2000/11/3

N2 - Carbon nanoballs encapsulated with cobalt were prepared by decomposition of methane. After acid treatment, the encapsulated cobalt can be removed to produce hollow carbon nanoballs. The content of hollow carbon nanoballs as high as 90 vol% in acid-treated carbon product can be obtained by increasing the content of cobalt from 50 to 75 mol% in the catalysts. However, under the same catalytic conditions, the main carbon products are multi walled carbon tubes (MWNTs) over Co/Al2O3, Co/La2O3, Co/CeO2 and Ni/MgO catalysts by decomposition of CH4, or by decomposition of CO over Co/MgO catalysts. These carbon nanoballs encapsulated with cobalt are novel magnetic materials.

AB - Carbon nanoballs encapsulated with cobalt were prepared by decomposition of methane. After acid treatment, the encapsulated cobalt can be removed to produce hollow carbon nanoballs. The content of hollow carbon nanoballs as high as 90 vol% in acid-treated carbon product can be obtained by increasing the content of cobalt from 50 to 75 mol% in the catalysts. However, under the same catalytic conditions, the main carbon products are multi walled carbon tubes (MWNTs) over Co/Al2O3, Co/La2O3, Co/CeO2 and Ni/MgO catalysts by decomposition of CH4, or by decomposition of CO over Co/MgO catalysts. These carbon nanoballs encapsulated with cobalt are novel magnetic materials.

UR - http://www.scopus.com/inward/record.url?scp=0001954866&partnerID=8YFLogxK

U2 - 10.1016/S0009-2614(00)01080-0

DO - 10.1016/S0009-2614(00)01080-0

M3 - 文章

AN - SCOPUS:0001954866

SN - 0009-2614

VL - 330

SP - 41

EP - 47

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-2

ER -

Catalytic growth of carbon nanoballs with and without cobalt encapsulation

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