TY - JOUR
T1 - Synthesis, characterization and magnetic properties of Co@Au core-shell nanoparticles encapsulated by nitrogen-doped multiwall carbon nanotubes
AU - Munoz-Sandoval, Emilio
AU - Perea-Lopez, Nestor
AU - Lima-Juarez, Rodolfo
AU - Labrada-Delgado, Gladis J.
AU - Rivera-Escoto, Beatriz Adriana
AU - Zamudio, Adalberto
AU - Silva-Pereyra, Héctor G.
AU - Robles-Avila, Emmanuel
AU - Terrones, Mauricio
N1 - Funding Information:
EMS thanks CONACYT for grants CB-2008-SEP-107082 and CB-2008-SEP-106942 , and the Laboratory for Nanoscience and Nanotechnology Research-LINAN of IPICYT for characterization facilities. MT thanks JST Japan for funding the Research Center for Exotic NanoCarbons, under the Japanese Regional Innovation Strategy Program by the Excellence. MT also thanks the support from the U.S. Air force Office of Scientific Research MURI grant FA9550-12-1-0035 . ERA thanks Postdoctoral grant from CONACYT .
PY - 2014/10
Y1 - 2014/10
N2 - 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 (C 6H5CH2NH2) 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.
AB - 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 (C 6H5CH2NH2) 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.
UR - https://www.scopus.com/pages/publications/84905651463
UR - https://www.scopus.com/pages/publications/84905651463#tab=citedBy
U2 - 10.1016/j.carbon.2014.05.077
DO - 10.1016/j.carbon.2014.05.077
M3 - Article
AN - SCOPUS:84905651463
SN - 0008-6223
VL - 77
SP - 722
EP - 737
JO - Carbon
JF - Carbon
ER -