Synthesis, characterization and magnetic properties of Co@Au core-shell nanoparticles encapsulated by nitrogen-doped multiwall carbon nanotubes

"Co/Au bilayer thin films were deposited on Si/SiOx substrates using the magnetron sputtering method and used as a catalytic support to grow forests of aligned nitrogen-doped multiwalled carbon nanotubes (N-MWCNT) via chemical vapor deposition (CVD) at 850 °C, using benzylamine (C6H5CH2NH2) as...

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Detalles Bibliográficos
Autores: Emilio Muñoz Sandoval, NESTOR PEREA LOPEZ, RODOLFO LIMA JUAREZ, GLADIS JUDITH LABRADA DELGADO, BEATRIZ ADRIANA RIVERA ESCOTO, Adalberto Zamudio Ojeda, Héctor Gabriel Silva Pereyra, EMMANUEL ROBLES AVILA, MAURICIO TERRONES MALDONADO
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:1010/1707
Acceso en línea:http://ipicyt.repositorioinstitucional.mx/jspui/handle/1010/1707
Access Level:acceso abierto
Palabra clave:info:eu-repo/classification/Autor/Chemical vapor deposition
info:eu-repo/classification/Autor/Doping (additives)
info:eu-repo/classification/Autor/Multiwalled carbon nanotubes (MWCN)
info:eu-repo/classification/Autor/Nanoparticles
info:eu-repo/classification/Autor/Synthesis (chemical)
info:eu-repo/classification/cti/2
info:eu-repo/classification/cti/23
Descripción
Sumario:"Co/Au bilayer thin films were deposited on Si/SiOx substrates using the magnetron sputtering method and used as a catalytic support to grow forests of aligned nitrogen-doped multiwalled carbon nanotubes (N-MWCNT) via chemical vapor deposition (CVD) at 850 °C, using benzylamine (C6H5CH2NH2) as a carbon and nitrogen source. Interestingly, the resulting N-MWCNT contains Co@Au core-shell nanoparticles located at their tips. We found that the metal particle cores consist of cobalt coated by an Au shell of few nanometers. Magnetic measurements revealed a ferromagnetic behavior of the system composed of Co@Au nanoparticles encapsulated inside N-MWCNT. The results are compared with pristine N-MWNT containing only Co nanoparticles encapsulated in their cores."

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