Controllable hydrothermal synthesis of bundled ZnO nanowires using cerium acetate hydrate precursors
| Autor: | Seok Cheol Choi, Sang Ho Sohn |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Nanowire chemistry.chemical_element 02 engineering and technology Zinc 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Hydrothermal circulation 0104 chemical sciences Electronic Optical and Magnetic Materials Dye-sensitized solar cell Cerium Lattice constant Chemical engineering chemistry Hydrothermal synthesis 0210 nano-technology Hydrate |
| Zdroj: | Physica E: Low-dimensional Systems and Nanostructures. 104:98-100 |
| ISSN: | 1386-9477 |
| DOI: | 10.1016/j.physe.2018.07.014 |
| Popis: | ZnO nanowire arrays were grown by the hydrothermal decomposition of zinc acetate dehydrate in precursor solutions containing cerium acetate hydrate. The effects of the Ce precursor on the hydrothermal synthesis of ZnO nanowires were investigated as a function of the Ce concentration. It was found that all the samples exhibited preferential orientation toward the c-plane and the Ce precursor had no effect on the lattice constant in the ZnO nanowires. ZnO nanowires grown in solutions containing 1 and 2 at% Ce precursors were bent and bundled, suggesting that solutions containing adequate amounts of Ce precursors enable the top surfaces of the vertically aligned ZnO nanowires to be either positively or negatively charged, and that electrostatic interactions among these local charges causes bending and bundling of the ZnO nanowires. Thus, Ce precursors in the solutions can control the morphology of the ZnO nanowires, causing them to be bent and bundled. We suggest that the bundled ZnO is applicable to Dye-sensitized solar cells because it can be enhanced adsorbed dye amounts in devices. |
| Databáze: | OpenAIRE |
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