Magnetic Properties and Photocatalytic Activity of the TiO2 Micropowders and Nanopowders Coated by Ni Nanoclusters
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In this work, TiO2 micropowders and nanopowders coated by Ni nanoclusters have been prepared by original electroless deposition method. The presence of Ni nanoclusters at the surface of TiO2 grains was confirmed by measuring the temperature dependence of magnetization. Optical spectroscopy measurements showed significant increase of light absorption in Ni-coated TiO2 nanopowders. Photocatalytic properties of TiO2/Ni powder were studied with electron paramagnetic resonance spectroscopy as well. It was found that deposition of Ni nanoclusters on a mixture of anatase (76%) and rutile (14%) nanopowder provides best results and the optimal Ni deposition time was determined.
KeywordsTitanium dioxide Photocatalysis Magnetic clusters
This work was financially supported by the Shota Rustaveli National Science Foundation of Georgia under grant no. 216860.
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