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		<doi>10.1080/1536383X.2018.1431217</doi>
		<issn>1536-383X</issn>
		<citationkey>SilvaPinhTravCora:2018:InCaPa</citationkey>
		<title>Influence of catalyst particles on multi-walled carbon nanotubes morphology and structure</title>
		<year>2018</year>
		<typeofwork>journal article</typeofwork>
		<secondarytype>PRE PI</secondarytype>
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		<author>Silva, Amanda Araújo,</author>
		<author>Pinheiro, Romário Araujo,</author>
		<author>Trava-Airoldi, Vladimir Jesus,</author>
		<author>Corat, Evaldo José,</author>
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		<group>CMS-ETES-SESPG-INPE-MCTIC-GOV-BR</group>
		<group>CMS-ETES-SESPG-INPE-MCTIC-GOV-BR</group>
		<group>LABAS-COCTE-INPE-MCTIC-GOV-BR</group>
		<group>LABAS-COCTE-INPE-MCTIC-GOV-BR</group>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<electronicmailaddress>amanda.aras@yahoo.com.br</electronicmailaddress>
		<electronicmailaddress></electronicmailaddress>
		<electronicmailaddress>vladimir.airoldi@inpe.br</electronicmailaddress>
		<electronicmailaddress>evaldo.corat@inpe.br</electronicmailaddress>
		<journal>Fullerenes, Nanotubes and Carbon Nanostructures</journal>
		<volume>26</volume>
		<number>5</number>
		<pages>315-323</pages>
		<transferableflag>1</transferableflag>
		<contenttype>External Contribution</contenttype>
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		<keywords>Carbon nanotubes, Catalyst, Chemical Vapor Deposition, Ferrocenium.</keywords>
		<abstract>Multi-walled carbon nanotubes (MWCNTs) have been successfully grown by Chemical Vapor Deposition (CVD) method. Elucidating the key characteristics of catalyst sources that affect carbon nanotubes growth is of great importance for improving and control MWCNTs morphology and structure. In this work we present a systematically study of CVD parameters, such as catalyst source, substrate morphology and temperature and how it affects carbon nanotubes synthesis. The novelty of this work lies on the catalyst composition. Two specific catalyst sources were analyzed: (i) Fe2Co and (ii) Fe2Co with ferrocene. Cyclic Voltammetry results confirmed the presence of Fe2+ in the Fe2Co with ferrocene solution. X-Ray Diffraction analysis confirmed the presence of iron particles on the substrate surface after its submission to growth conditions. Raman results suggested an improvement in carbon nanotubes crystalline quality catalyzed by Fe2Co with ferrocene. For tridimensional substrates such as fibers, the Fe2Co with ferrocene provided aligned CNTs with lower defects density noticed in Raman spectra and SEM micrographs. Finally, we corroborated the Fe2+ encapsulation relation with the growth mechanism and MWCNTs formation.</abstract>
		<area>FISMAT</area>
		<language>en</language>
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