Amorphous–anatase phase transition in single immobilized TiO2 nanoparticles

KHATIM, O., AMAMRA, M., CHHOR, K., BELL, Anthony, NOVIKOV, D., VREL, D. and KANAEV, A. (2013). Amorphous–anatase phase transition in single immobilized TiO2 nanoparticles. Chemical Physics Letters, 558, 53-56.

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Abstract

Kinetics of the amorphous–anatase phase transition in single immobilized 5-nm TiO2 nanoparticles has been studied at temperatures between 400 and 1000 °C at the DORIS-III synchrotron source of Hasylab. The measurements indicate the anatase phase appearance at temperatures above 500 °C. No formation of rutile phase was observed. The transformation kinetics for each fixed temperature is rapid and completes within 5 min. The crystalline mass progressively increases with temperature and the full transformation into anatase polymorph is achieved above 800 °C. The results suggest higher surface energy of the anatase phase compared to amorphous one, which delays the crystallization process.

Item Type:	Article
Uncontrolled Keywords:	02 Physical Sciences; 03 Chemical Sciences; 10 Technology; Chemical Physics
Identification Number:	https://doi.org/10.1016/j.cplett.2012.12.019
Page Range:	53-56
SWORD Depositor:	Symplectic Elements
Depositing User:	Symplectic Elements
Date Deposited:	08 Jan 2019 13:20
Last Modified:	18 Mar 2021 07:05
URI:	https://shura.shu.ac.uk/id/eprint/23636

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