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N-Dopant-Mediated Growth of Metal Oxide Nanoparticles on Carbon Nanotubes

by 1,2,3, 1,2,3,4, 1,2,3,5,* and 1,2,3
1
National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, KAIST, Daejeon 34141, Korea
2
Department of Materials Science and Engineering, KAIST, Daejeon 34141, Korea
3
KAIST Institute for Nanocentury, KAIST, Daejeon 34141, Korea
4
Department of Fiber System Engineering, Dankook University, Yongin 16890, Korea
5
Department of Information Display, Kyung Hee University, Seoul 02447, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Alberto Villa
Nanomaterials 2021, 11(8), 1882; https://doi.org/10.3390/nano11081882
Received: 24 June 2021 / Revised: 19 July 2021 / Accepted: 19 July 2021 / Published: 22 July 2021
Metal oxide nanoparticles supported on heteroatom-doped graphitic surfaces have been pursued for several decades for a wide spectrum of applications. Despite extensive research on functional metal oxide nanoparticle/doped carbon nanomaterial hybrids, the role of the heteroatom dopant in the hybridization process of doped carbon nanomaterials has been overlooked. Here, the direct growth of MnOx and RuOx nanoparticles in nitrogen (N)-doped sites of carbon nanotubes (NCNTs) is presented. The quaternary nitrogen (NQ) sites of CNTs actively participate in the nucleation and growth of the metal nanoparticles. The evenly distributed NQ nucleation sites mediate the generation of uniformly dispersed <10 nm diameter MnOx and RuOx nanoparticles, directly decorated on NCNT surfaces. The electrochemical performance of the resultant hybridized materials was evaluated using cyclic voltammetry. This novel hybridization method using the dopant-mediated nucleation and growth of metal oxides suggests ways that heteroatom dopants can be utilized to optimize the structure, interface and corresponding properties of graphitic carbon-based hybrid materials. View Full-Text
Keywords: dopant; carbon nanotubes; metal oxides; nanoparticles; hybridization dopant; carbon nanotubes; metal oxides; nanoparticles; hybridization
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MDPI and ACS Style

Lee, J.A.; Lee, W.J.; Lim, J.; Kim, S.O. N-Dopant-Mediated Growth of Metal Oxide Nanoparticles on Carbon Nanotubes. Nanomaterials 2021, 11, 1882. https://doi.org/10.3390/nano11081882

AMA Style

Lee JA, Lee WJ, Lim J, Kim SO. N-Dopant-Mediated Growth of Metal Oxide Nanoparticles on Carbon Nanotubes. Nanomaterials. 2021; 11(8):1882. https://doi.org/10.3390/nano11081882

Chicago/Turabian Style

Lee, Jin A., Won J. Lee, Joonwon Lim, and Sang O. Kim 2021. "N-Dopant-Mediated Growth of Metal Oxide Nanoparticles on Carbon Nanotubes" Nanomaterials 11, no. 8: 1882. https://doi.org/10.3390/nano11081882

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