Aerosol assisted chemical vapour deposition of hydroxyapatite-embedded titanium dioxide composite thin films
authors Piccirillo, C; Denis, CJ; Pullar, RC; Binions, R; Parkin, IP; Darr, JA; Castro, PML
nationality International
journal JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
author keywords Hydroxyapatite; Titanium dioxide; Chemical vapour deposition; Photocatalysis
keywords CONTINUOUS HYDROTHERMAL SYNTHESIS; PHOTOCATALYTIC DEGRADATION; FLOW SYNTHESIS; MODIFIED TIO2; OXIDATION; NANOPARTICLES; COATINGS; NANOCOMPOSITES; OXIDES; XPS
abstract This work describes the first Aerosol Assisted Chemical Vapour Deposition (AACVD) synthesis of photocatalytic titanium dioxide thin films embedded with synthetic hydroxyapatite, [Ca-10(PO4)(OH)(2)], nanoparticles. The hydroxyapatite nanoparticles were prepared using a low temperature continuous hydrothermal flow synthesis method; analysis of the hydroxyapatite powder showed that it was phase pure and that the as-prepared material was made up of nano-needles. The nanoparticles were then embedded into TiO2 coatings using the AACVD technique by suspending them in a solution of the titania precursor (titanium tetra-isopropoxide). Results showed that the hydroxyapatite, although present in very low concentrations in the coatings (not detectable by XRD or Raman spectroscopy), heavily affected their morphology, depending on their concentration in the precursor solution. Tests of the photocatalytic activity of the composite films showed that the inclusion of the hydroxyapatite led to an increase in methylene blue photodegradation (up to 50% higher) and that the materials were photostable. This study shows that TiO2 coatings embedded with hydroxyapatite nanoparticles have potential as highly efficient photocatalysts. (C) 2016 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE SA
issn 1010-6030
year published 2017
volume 332
beginning page 45
ending page 53
digital object identifier (doi) 10.1016/j.jphotochem.2016.08.010
web of science category Chemistry, Physical
subject category Chemistry
unique article identifier WOS:000387837300005
  ciceco authors
  impact metrics
times cited (wos core): 4
journal impact factor (jcr 2016): 2.625
5 year journal impact factor (jcr 2016): 2.493
category normalized journal impact factor percentile (jcr 2016): 54.138
altmetrics:



 


Events
Sponsors

1suponsers_list_ciceco.jpg