The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Catalisadores de cobalto-ferrum suportados em alumina foram preparados usando o método de impregnação úmida, aplicando 3 condições diferentes, nomeadamente placa quente (A), sonicação (B) e imersão (C). Os catalisadores de cobalto-ferrum suportados em alumina foram aplicados na síntese de nanotubos de carbono de paredes múltiplas (MWNTs) utilizando a técnica de deposição química catalítica de vapor (CCVD). A morfologia e o tamanho das partículas dos catalisadores de cobalto-ferrum e o rendimento de MWNTs foram examinados por microscopia eletrônica de varredura por emissão de campo (FE-SEM), enquanto a composição elementar da superfície das amostras foi obtida por análise de energia dispersiva de raios X (EDX). A morfologia dos catalisadores A, B e C foi diferente, os tamanhos das partículas variaram de 20 a 40 nm. Descobriu-se que os diâmetros do rendimento dos MWNTs das amostras A, B e C estão relacionados ao tamanho da partícula do catalisador, portanto, quanto menor a partícula do catalisador, mais finos serão os MWNTs obtidos. Os MWNTs de menor diâmetro foram obtidos com maior pureza e qualidade porque a superfície dos nanotubos é isenta de carbono amorfo. Portanto, diferentes métodos de preparação de catalisador resultaram em diferentes tamanhos de partícula de catalisador, a fim de sintetizar MWNTs com diâmetro desejado.
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Jia Chee TEE, Ahmad Fauzi ISMAIL, Madzlan AZIZ, Tetsuo SOGA, "Influence of Catalyst Preparation on Synthesis of Multi-Walled Carbon Nanotubes" in IEICE TRANSACTIONS on Electronics,
vol. E92-C, no. 12, pp. 1421-1426, December 2009, doi: 10.1587/transele.E92.C.1421.
Abstract: Alumina supported cobalt-ferrum catalysts were prepared using wet impregnation method by applying 3 different conditions, namely hotplate (A), sonication (B) and soaking (C). The alumina supported cobalt-ferrum catalysts were applied in the synthesis of multi-walled carbon nanotubes (MWNTs) using catalytic chemical vapour deposition (CCVD) technique. The morphology and particle size of the cobalt-ferrum catalysts and the MWNTs yield were examined by field emission-scanning electron microscopy (FE-SEM) while the surface elemental composition of the samples was obtained by energy dispersive X-ray analysis (EDX). The morphology of catalysts A, B and C were found to be different, the particle sizes were ranged from 20-40 nm. The diameters of the MWNTs yield from samples A, B and C were found to be related to the catalyst particle size, thus the smaller the catalyst particle, the thinner the MWNTs obtained. The MWNTs with smaller diameter were obtained with higher purity and quality becuase the nanotube surface are free from amorphous carbon. Therefore, different catalyst preparation methods resulted in different sizes of the catalyst particle in order to synthesize MWNTs with desired diameter.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E92.C.1421/_p
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@ARTICLE{e92-c_12_1421,
author={Jia Chee TEE, Ahmad Fauzi ISMAIL, Madzlan AZIZ, Tetsuo SOGA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Influence of Catalyst Preparation on Synthesis of Multi-Walled Carbon Nanotubes},
year={2009},
volume={E92-C},
number={12},
pages={1421-1426},
abstract={Alumina supported cobalt-ferrum catalysts were prepared using wet impregnation method by applying 3 different conditions, namely hotplate (A), sonication (B) and soaking (C). The alumina supported cobalt-ferrum catalysts were applied in the synthesis of multi-walled carbon nanotubes (MWNTs) using catalytic chemical vapour deposition (CCVD) technique. The morphology and particle size of the cobalt-ferrum catalysts and the MWNTs yield were examined by field emission-scanning electron microscopy (FE-SEM) while the surface elemental composition of the samples was obtained by energy dispersive X-ray analysis (EDX). The morphology of catalysts A, B and C were found to be different, the particle sizes were ranged from 20-40 nm. The diameters of the MWNTs yield from samples A, B and C were found to be related to the catalyst particle size, thus the smaller the catalyst particle, the thinner the MWNTs obtained. The MWNTs with smaller diameter were obtained with higher purity and quality becuase the nanotube surface are free from amorphous carbon. Therefore, different catalyst preparation methods resulted in different sizes of the catalyst particle in order to synthesize MWNTs with desired diameter.},
keywords={},
doi={10.1587/transele.E92.C.1421},
ISSN={1745-1353},
month={December},}
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TY - JOUR
TI - Influence of Catalyst Preparation on Synthesis of Multi-Walled Carbon Nanotubes
T2 - IEICE TRANSACTIONS on Electronics
SP - 1421
EP - 1426
AU - Jia Chee TEE
AU - Ahmad Fauzi ISMAIL
AU - Madzlan AZIZ
AU - Tetsuo SOGA
PY - 2009
DO - 10.1587/transele.E92.C.1421
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E92-C
IS - 12
JA - IEICE TRANSACTIONS on Electronics
Y1 - December 2009
AB - Alumina supported cobalt-ferrum catalysts were prepared using wet impregnation method by applying 3 different conditions, namely hotplate (A), sonication (B) and soaking (C). The alumina supported cobalt-ferrum catalysts were applied in the synthesis of multi-walled carbon nanotubes (MWNTs) using catalytic chemical vapour deposition (CCVD) technique. The morphology and particle size of the cobalt-ferrum catalysts and the MWNTs yield were examined by field emission-scanning electron microscopy (FE-SEM) while the surface elemental composition of the samples was obtained by energy dispersive X-ray analysis (EDX). The morphology of catalysts A, B and C were found to be different, the particle sizes were ranged from 20-40 nm. The diameters of the MWNTs yield from samples A, B and C were found to be related to the catalyst particle size, thus the smaller the catalyst particle, the thinner the MWNTs obtained. The MWNTs with smaller diameter were obtained with higher purity and quality becuase the nanotube surface are free from amorphous carbon. Therefore, different catalyst preparation methods resulted in different sizes of the catalyst particle in order to synthesize MWNTs with desired diameter.
ER -