One-step microwave hydrothermal synthesis of In2O3 nanostructures with high oxygen vacancy content
| Autor: | Z.N. Tetana, Tshwafo E. Motaung, Ella C. Linganiso, Linda Z. Linganiso |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Mechanical Engineering Analytical chemistry Oxide Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Bixbyite 01 natural sciences Hydrothermal circulation 0104 chemical sciences Crystal chemistry.chemical_compound chemistry Mechanics of Materials Phase (matter) Vacancy defect Hydrothermal synthesis General Materials Science 0210 nano-technology |
| Zdroj: | Materials Letters. 260:126883 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2019.126883 |
| Popis: | A simple, efficient and low cost microwave irradiation-assisted hydrothermal method for indium oxide (In2O3) synthesis has been developed. Different reaction periods were employed in order to study the crystal phase stability of the material. Crystal phase, morphology and optical properties were determined using X-ray diffraction (XRD), transmission electron microscopy (TEM), and ultraviolet–visible spectroscopy (UV–Vis) respectively. The pure cubic bixbyite type In2O3 obtained consisted of particles that were less than 10 nm, which tend to agglomerate and form bigger clusters. Textual properties of the obtained nanoparticles were further studied through nitrogen adsorption isotherms. The Brunauer-Emmett-Teller (BET) surface area of the prepared samples ranged between 83 and 96 m2/g. Surface properties of the materials revealed a much higher percentage (about 50%) of vacancy oxygen content, which has been related to improved material reactivity in metal oxides. |
| Databáze: | OpenAIRE |
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