Conversion of Single Crystal (NH4)2Mo3S13·H2O to Isomorphic Pseudocrystals of MoS2 Nanoparticles
| Autor: | Lintao Peng, Vinayak P. Dravid, Abhishek Banerjee, Matthew Grayson, Shulan Ma, Kota S. Subrahmanyam, Saiful Islam, Yihui He, Jeffrey D. Cain, Mercouri G. Kanatzidis, Yuan Li, Fengyuan Shi |
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| Rok vydání: | 2018 |
| Předmět: |
Morphology (linguistics)
Materials science General Chemical Engineering Nanoparticle 02 engineering and technology General Chemistry Electron 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Nanocrystalline material 0104 chemical sciences chemistry.chemical_compound Nanocrystal chemistry Chemical engineering Electrical resistivity and conductivity Materials Chemistry 0210 nano-technology Single crystal Polysulfide |
| Zdroj: | Chemistry of Materials. 30:3847-3853 |
| ISSN: | 1520-5002 0897-4756 |
| DOI: | 10.1021/acs.chemmater.8b01247 |
| Popis: | We have prepared nanocrystals of MoS2 across a range of length scales by heating single crystals of the molecular precursor (NH4)2Mo3S13·H2O. Rod-shaped crystals of the polysulfide precursor retain their original morphology after heating at temperatures up to 1000 °C and undergo complete conversion to MoS2 while acting as a template for the confined formation of MoS2 nanocrystals. This solid state transformation proceeds with the release of gaseous species without blowing the crystals apart and leads to formation of pores embedded into a nanocrystalline assembly of the templated nano-MoS2. The obtained assemblies of MoS2 nanocrystals have the exact same shape of the original rod-shaped (NH4)2Mo3S13·H2O crystals indicative of a pseudomorphic shape-retentive process. Such crystal-shaped nanocrystal assemblies show electrical conductivity values similar to a bulk MoS2 single crystal with electron carrier concentration of 1.5 × 1014 cm–3 and mobility of 7 cm2/(V s). The nanocrystals of MoS2 were grown at temp... |
| Databáze: | OpenAIRE |
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