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Content Provider | IET Digital Library |
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Author | Kusior, Anna Warchal, Andrzej Komornicki, Stanislaw Radecka, Marta |
Abstract | An easy approach for the fabrication of titanium dioxide hollow spheres is proposed. Nanostructures were obtained by the conventional hard template method with silica-protected calcination. The samples were characterised by differential thermal analysis and thermogravimetry, Brunauer-Emmett-Teller nitrogen adsorption isotherms, X-ray diffraction, scanning and transmission electron microscopy (SEM and TEM). Raman spectroscopy and optical properties of the prepared materials were studied as well. X-ray analysis has shown that the silica protection layer allows direct phase transformation from amorphous titania to crystalline anatase regardless of the temperature. The crystallite size is more than 5 nm. The diameter of the obtained hollow nanostructures is within the range 115–420 nm. The thickness of the walls varies from 12 to 38 nm depending on annealing conditions. TEM and SEM images confirm their spherical shape. |
Starting Page | 721 |
Ending Page | 725 |
Page Count | 5 |
Volume Number | 9 |
e-ISSN | 17500443 |
Issue Number | Issue 10, Oct (2014) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/mnl/9/10 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/mnl.2014.0414 |
Journal | Micro & Nano Letters |
Publisher Date | 2014-10-02 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Adsorption Adsorption And Desorption Kinetics Amorphous Titania Annealing Processes Brunauer–Emmett–Teller Nitrogen Adsorption Isotherms Calcination Constant-composition Solid-solid Phase Transformations Conventional Hard Template Method Crystalline Anatase Crystallite Layer Crystallite Size Crystallites Differential Thermal Analysis Direct Phase Transformation Electromagnetic Radiation Spectrometry (chemical Analysis) Evaporation And Condensation Hard-template Synthesis Heat And Thermomechanical Treatments Hollow Nanostructure Infrared And Raman Spectra in Inorganic Crystal Method of Nanofabrication And Processing Microstructure Nanofabrication NanoParticle Nanostructure Nanostructured Material Nanotube And Nanostructured Material Optical Property Polymorphic, Massive, And Order-disorder Powder Technique, Compaction And Sintering Raman Spectra Raman Spectroscopy Scanning Electron Microscopy SEM Silica Protection Layer Silica-protected Calcination Silicon Compound Size 115 Nm to 420 Nm Solid-solid Transitions Solid-state Phase Transformations Sorption And Accommodation Coefficient Spherical Shape Structure of Solid Clusters Surface Chemistry TEM Thermogravimetry TiO2-SiO2 Titanium Compound Titanium Dioxide Hollow Spheres Transmission Electron Microscopy X-Ray Analysis X-Ray Chemical Analysis X-Ray Diffraction |
Content Type | Text |
Resource Type | Article |
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