N-Dopant-Mediated Growth of Metal Oxide Nanoparticles on Carbon Nanotubes
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 hybridiz...
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| Format: | Article |
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MDPI AG
2021-07-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/8/1882 |
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| author | Jin Ah Lee Won Jun Lee Joonwon Lim Sang Ouk Kim |
| author_facet | Jin Ah Lee Won Jun Lee Joonwon Lim Sang Ouk Kim |
| author_sort | Jin Ah Lee |
| collection | DOAJ |
| description | 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 MnO<sub>x</sub> and RuO<sub>x</sub> nanoparticles in nitrogen (N)-doped sites of carbon nanotubes (NCNTs) is presented. The quaternary nitrogen (N<sub>Q</sub>) sites of CNTs actively participate in the nucleation and growth of the metal nanoparticles. The evenly distributed N<sub>Q</sub> nucleation sites mediate the generation of uniformly dispersed <10 nm diameter MnO<sub>x</sub> and RuO<sub>x</sub> 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. |
| first_indexed | 2024-03-10T08:32:25Z |
| format | Article |
| id | doaj.art-9868086a809a4ef0a86e9a9f136cb870 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T08:32:25Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-9868086a809a4ef0a86e9a9f136cb8702023-11-22T08:57:08ZengMDPI AGNanomaterials2079-49912021-07-01118188210.3390/nano11081882N-Dopant-Mediated Growth of Metal Oxide Nanoparticles on Carbon NanotubesJin Ah Lee0Won Jun Lee1Joonwon Lim2Sang Ouk Kim3National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, KAIST, Daejeon 34141, KoreaNational Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, KAIST, Daejeon 34141, KoreaNational Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, KAIST, Daejeon 34141, KoreaNational Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, KAIST, Daejeon 34141, KoreaMetal 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 MnO<sub>x</sub> and RuO<sub>x</sub> nanoparticles in nitrogen (N)-doped sites of carbon nanotubes (NCNTs) is presented. The quaternary nitrogen (N<sub>Q</sub>) sites of CNTs actively participate in the nucleation and growth of the metal nanoparticles. The evenly distributed N<sub>Q</sub> nucleation sites mediate the generation of uniformly dispersed <10 nm diameter MnO<sub>x</sub> and RuO<sub>x</sub> 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.https://www.mdpi.com/2079-4991/11/8/1882dopantcarbon nanotubesmetal oxidesnanoparticleshybridization |
| spellingShingle | Jin Ah Lee Won Jun Lee Joonwon Lim Sang Ouk Kim N-Dopant-Mediated Growth of Metal Oxide Nanoparticles on Carbon Nanotubes Nanomaterials dopant carbon nanotubes metal oxides nanoparticles hybridization |
| title | N-Dopant-Mediated Growth of Metal Oxide Nanoparticles on Carbon Nanotubes |
| title_full | N-Dopant-Mediated Growth of Metal Oxide Nanoparticles on Carbon Nanotubes |
| title_fullStr | N-Dopant-Mediated Growth of Metal Oxide Nanoparticles on Carbon Nanotubes |
| title_full_unstemmed | N-Dopant-Mediated Growth of Metal Oxide Nanoparticles on Carbon Nanotubes |
| title_short | N-Dopant-Mediated Growth of Metal Oxide Nanoparticles on Carbon Nanotubes |
| title_sort | n dopant mediated growth of metal oxide nanoparticles on carbon nanotubes |
| topic | dopant carbon nanotubes metal oxides nanoparticles hybridization |
| url | https://www.mdpi.com/2079-4991/11/8/1882 |
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