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Microstructures and photocatalytic properties of Nitrogen-Implanted titania Nanostructured Films

Zhou, Hao, Martens, Wayde N., Tesfamichael, Tuquabo, Will, Geoffrey D., Hu, Aming, & Bell, John M. (2005) Microstructures and photocatalytic properties of Nitrogen-Implanted titania Nanostructured Films. In Chiao, Jung-Chih, Dzurak, Andrew S., Jagadish, Chennupati, & Thiel, David V. (Eds.) Device and Process Technologies for Microelectronics, MEMS, and Photonics IV: Proceedings of SPIE, 12-14 December, 2005, Brisbane, Australia.

Abstract

We report the influence of nitrogen implantation and annealing on the microstructures and photocatalytic properties of a nanostructured titania (TiO2) film. Titania samples were implanted at 40 keV and ion dose range of 1016/cm2 to 4×1016/cm2. From X–ray diffraction (XRD) and transmission electron microscopy (TEM) analyses it was found that the anatase phase of titania was predominated with a tiny brookite and stable at annealing temperatures up to 973 K. The samples showed narrower XRD peaks corresponding to larger mean-grain sizes comparing to the un-implanted titania samples. The SIMS (secondary ion mass spectroscopy) nitrogen depth profile showed a maximum nitrogen concentration at about 70 nm beneath the film surface. The absorption edge of the titania samples as measured using spectrophotometer was found to shift toward longer wavelengths with the increase of ion dose. The experiments of photodegradation of phenol were performed under a UV illumination for the N-implanted titania film which exhibited improved photocatalytic properties with the increase of annealing temperature.

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ID Code: 7663
Item Type: Conference Paper
Additional Information: For more information, please refer to the publisher's website (see hypertext link) or contact the author. t.tesfamichael@qut.edu.au
Additional URLs:
Keywords: Titania film, Nitrogen ion implantation, Annealing, Microscopy analysis, Photocatalytic property
ISBN: 0819460680
ISSN: 0277-786X
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2005 SPIE
Deposited On: 15 May 2007
Last Modified: 29 Feb 2012 23:16

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