Hydrothermal synthesis of 3D TiO2 nanostructures using nitric acid: Characterization and evolution mechanism
| Autor: | Nursev Erdogan, Jongee Park, Abdullah Ozturk |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Anatase
Materials science Scanning electron microscope Process Chemistry and Technology Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Titanate 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Chemical engineering Rutile Nitric acid Transmission electron microscopy Materials Chemistry Ceramics and Composites Hydrothermal synthesis 0210 nano-technology Diffractometer |
| Zdroj: | Ceramics International. 42:5985-5994 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2015.12.148 |
| Popis: | Various morphologies of TiO2 nanostructures were synthesized by HNO3 assisted hydrothermal treatment with respect to the acid molarity (1 M, 3 M, and 8 M), temperature (110, 140, and 180 degrees C), and time (1, 3, and 6 h). An additional sample was synthesized inside the protonated titanate nanoribbon coated vessel with the acid molarity of 8M at 140 degrees C for 3 h. The crystal structure and morphology of the nanostructures synthesized were investigated using X-Ray diffractometer, scanning electron microscope, and transmission electron microscope. The results revealed that lower acid concentrations, longer synthesis durations and higher temperatures favored anatase phase formation. Meanwhile, a phase pure 3D lotus structure ruffle TiO2 could be obtained by hydrothermal synthesis at 8M HNO3 concentration at 140 degrees C for 3 h using protonated Htitanate nanoribbons. A probable mechanism for the evolution of 3D ruffle lotus structure was highlighted. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved. |
| Databáze: | OpenAIRE |
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