Název: A low-temperature sol-microwave method for ultra-small rutile titanium dioxide nanoparticles.
Autoři: Thelappurath, Aiswarya Vijayakumar ; Pizúrová, Naděžda
Typ dokumentu: Příspěvky z konference
Konference/Akce: Nanocon 2024 - International Conference on Nanomaterials - Research & Application /16./, Brno (CZ), 20241016
Rok: 2025
Jazyk: eng
Abstrakt: The rutile phase of TiO2 can generally be obtained by high-temperature calcination of anatase nanoparticles. \nHowever, calcination undoubtedly leads to agglomeration and growth, hence increasing particle size. So, \nfabrication of rutile titania at low temperatures is of great importance since the formation of bigger particles \ncan be avoided. Here, ultra-small rutile TiO2 nanoparticles (NPs) of ~ 5 nm have been synthesized using a sol\nmicrowave method at low temperature (150 °C). These rutile TiO2 NPs have shown no surface defects, such \nas trivalent titanium (Ti3+) ions and oxygen vacancies. The resulting samples were analyzed by the following \nmethods: X-ray diffraction (XRD) to determine the crystallinity and phase composition, Raman spectroscopy \nto refine the phase composition, X-ray Photoelectron Spectroscopy (XPS) to identify oxidation states and \nphase composition in surface layers, and High-Resolution Transmission Electron Microscopy (HRTEM) to \nstudy morphology, phase analysis, and surface quality assessment.
Klíčová slova: defect free; low temperature; microwave synthesis; rutile; TiO2 nanoparticles
Číslo projektu: GC21-31852J (CEP)
Poskytovatel projektu: GA ČR
Zdrojový dokument: NANOCON 2024 - Conference Proceedings, ISBN 978-80-88365-24-2, ISSN 2694-930X

Instituce: Ústav fyziky materiálů AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: https://hdl.handle.net/11104/0366401

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-679019