Synthesis, characterization and magnetic properties of defective nitrogen-doped multiwall carbon nanotubes encapsulating ferromagnetic nanoparticles

"Nitrogen-doped multi-walled carbon nanotubes (CNxMWNTs) with multiple morphological defects were produced using a modified chemical vapor deposition (CVD) method. In a typical CNxMWNTs synthesis by CVD, an acetone trap is used to catch organic by-products from pyrolysis. In the present work, a...

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Detalles Bibliográficos
Autores: MARIA LUISA GARCIA BETANCOURT, YADIRA ITZEL VEGA CANTU, SOFIA MAGDALENA VEGA DIAZ, Aarón Morelos Gómez, NESTOR PEREA LOPEZ, Rodolfo Cruz Silva, Humberto Terrones Maldonado, MAURICIO TERRONES MALDONADO, Emilio Muñoz Sandoval
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2014
País:México
Institución:Instituto Potosino de Investigación Científica y Tecnológica
Repositorio:Repositorio Institucional del IPICYT
OAI Identifier:oai:ipicyt.repositorioinstitucional.mx:1010/1762
Acceso en línea:http://ipicyt.repositorioinstitucional.mx/jspui/handle/1010/1762
Access Level:acceso abierto
Palabra clave:info:eu-repo/classification/Autor/Carbon Nanotube (CN)
info:eu-repo/classification/Autor/Chemical Vapor Deposition (CVD)
info:eu-repo/classification/Autor/Defect
info:eu-repo/classification/Autor/Magnetic Property
info:eu-repo/classification/Autor/Metallic Nanoparticles
info:eu-repo/classification/cti/7
info:eu-repo/classification/cti/33
Descripción
Sumario:"Nitrogen-doped multi-walled carbon nanotubes (CNxMWNTs) with multiple morphological defects were produced using a modified chemical vapor deposition (CVD) method. In a typical CNxMWNTs synthesis by CVD, an acetone trap is used to catch organic by-products from pyrolysis. In the present work, an aqueous solution of NaCl (26.82 wt%) was used in the trap, instead of acetone. Carbon nanotubes with sharp tips and lumps were found in the products. Scanning electron microscopy (SEM) and high resolution transmission electron microscopy showed the formation of nanoparticles of different shapes inside the nanotubes. The electronic and magnetic properties were studied using a physical properties measurement Evercool system (PPMS). With this simple change in the CVD-trap, it is possible to control the morphology of carbon nanotubes and metallic nanoparticles. Differences in gas flow are proposed as a possible mechanism to produce these changes in both nanoparticles and CNxMWNTs."

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