Titanium oxide nanospheres: preparation, characterization, and wide-spectral absorption
| Autor: | Dengzhu Guo, Zhan Wu, Zhi-Kun Zhang, Gengmin Zhang, Ying‐Jie Xing |
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| Rok vydání: | 2012 |
| Předmět: |
Anatase
Electrolysis Materials science Scanning electron microscope Inorganic chemistry Surfaces and Interfaces Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Titanium oxide Chemical engineering X-ray photoelectron spectroscopy Rutile Transmission electron microscopy law Materials Chemistry Electrical and Electronic Engineering Absorption (electromagnetic radiation) |
| Zdroj: | physica status solidi (a). 209:2020-2026 |
| ISSN: | 1862-6300 |
| DOI: | 10.1002/pssa.201228153 |
| Popis: | Titanium oxide (TiO2) nanospheres were synthesized by using cathodic-plasma electrolysis method at low voltage of 70 V. The morphological, componential, and structural characterizations of the nanospheres were carried out in detail by using scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD). It is found the nanospheres mostly have diameters in the range of 20–200 nm, and are in anatase, rutile, and oxygen-deficient phases. The nanospheres exhibit excellent optical absorption covering the wavelength range from 240 to 2600 nm. It is also found that the low voltage during plasma electrolysis could result in more anatase phases of TiO2. The mechanisms responsible for the nanosphere formation and the wide spectral absorption were also discussed. |
| Databáze: | OpenAIRE |
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