Controllable synthesis of single-crystal SnO2nanowires and tri-crystal SnO2nanobelts
| Autor: | Siyuan Zhou, Yanjie Wei, He Zheng, Shuangfeng Jia, Huayu Peng, Lei Li, Shuaishuai Hu, Jianbo Wang, Shizhou Pu, Huaping Sheng |
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| Rok vydání: | 2018 |
| Předmět: |
Nanostructure
Materials science Tin dioxide Nucleation Nanowire 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Surface energy 0104 chemical sciences Crystal chemistry.chemical_compound chemistry Chemical engineering General Materials Science 0210 nano-technology Single crystal |
| Zdroj: | CrystEngComm. 20:7114-7119 |
| ISSN: | 1466-8033 |
| Popis: | Depending on the nucleation sites, two types of tin dioxide (SnO2) nanostructures were synthesized: (1) single-crystal SnO2 nanowires and (2) novel tri-crystal SnO2 nanobelts with the coexistence of (301) and (01) twins. It is speculated that the different vapor concentrations of Sn/O may lead to the nucleation of distinct structures and morphologies in low-dimensional SnO2. Meanwhile, the growth direction changes in both nanowires (from [01] to [001]) and nanobelts (from [03] to [001]), which could be related to the relatively lower Sn/O ratio during the later growth stages. The thermodynamic growth processes are also discussed in terms of surface energy. These findings contribute to the intuitive understanding of the growth mechanisms in SnO2 which may lead to the property-controlled design of next generation optical and electrical nanodevices. |
| Databáze: | OpenAIRE |
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