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research
Synthesis and characterisation of potassium polytitanate for photocatalytic degradation of crystal violet
Authors
I El Saliby
JH Kim
+4 more
A McDonagh
M Shahid
HK Shon
LD Tijing
Publication date
1 January 2014
Publisher
'Elsevier BV'
Doi
Cite
Abstract
© 2014 . Potassium titanate nanostructures were synthesised by hydrothermal treatment of TiO2 (P25) in KOH and H2O2. As-produced powders were characterised by scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, X-ray diffraction, and nitrogen adsorption-desorption methods. Longitudinally-oriented-wire-like structures with a length up to several micrometres and diameters ranging from 10 to 30nm were obtained. Larger size fibrous nanowires resulting from the hydrothermal treatment showed high affinity in adsorbing crystal violet (CV), which was mainly due to their high surface area. The photocatalytic bleaching of CV solution revealed that the wires are photoactive under ultraviolet light irradiation. Macroporous nanowires are considered as effective adsorbents of CV, capable of photocatalytic degradation, and they can be easily separated from the solution by settling
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OPUS - University of Technology Sydney
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Last time updated on 13/02/2017