Ni@onion-like carbon and Co@amorphous carbon: control of carbon structures by metal ion species in MOFs
| Autor: | Syo Matsumura, Kazuya Otsubo, Tomokazu Yamamoto, Mitsuhiko Maesato, Megumi Mukoyoshi, Hirokazu Kobayashi, Hiroshi Kitagawa, Kohei Kusada, Yoshiki Kubota |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Metals and Alloys chemistry.chemical_element General Chemistry Variable-range hopping Catalysis Surfaces Coatings and Films Electronic Optical and Magnetic Materials Metal Amorphous carbon Chemical engineering chemistry Electrical resistivity and conductivity visual_art Thermal Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Carbon composites Isostructural Carbon |
| Zdroj: | Chemical Communications. 57(48):5897-5900 |
| ISSN: | 1359-7345 |
| Popis: | We first report the facile synthesis of metal-carbon composites consisting of metal nanoparticles (NPs) and different types of carbon species: onion-like and amorphous carbon, Ni@onion-like carbon and Co@amorphous carbon. By simply changing the metal species in an isostructural metal-organic framework, thermal decompositions of MOF-74 directly afforded different types of metal NPs and carbon composites, which exhibited good electrical conductivity. In particular, the Ni@onion-like carbon, having a well-ordered carbon structure, had high electrical conductivity (sigma = 5.3 omega(-1) cm(-1) at 295 K), explained by a modified model of the Efros-Shklovskii variable range hopping. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|