Synthesis and Photocatalytic Activity of Anatase/Rutile TiO2 Nanoparticles by Wire Explosion Process
P Ranjan, S Nakagawa, H Suematsu, R Sarathi - INAE Letters, 2018 - Springer
P Ranjan, S Nakagawa, H Suematsu, R Sarathi
INAE Letters, 2018•SpringerTiO 2 nanoparticles (NPs) of mixed phases, namely anatase and rutile were produced by
Wire Explosion Process (WEP), in oxygen ambience of different pressures. K, the ratio of
energy stored in the capacitor to the sublimation energy of the wire was used as another
parameter to control the phase and morphology of the NPs. Synthesized particles were
characterized by X-ray diffraction studies which indicated the presence of mixed phase of
NPs. The rutile content increased with increase in K and/or with decrease of oxygen …
Wire Explosion Process (WEP), in oxygen ambience of different pressures. K, the ratio of
energy stored in the capacitor to the sublimation energy of the wire was used as another
parameter to control the phase and morphology of the NPs. Synthesized particles were
characterized by X-ray diffraction studies which indicated the presence of mixed phase of
NPs. The rutile content increased with increase in K and/or with decrease of oxygen …
Abstract
TiO2 nanoparticles (NPs) of mixed phases, namely anatase and rutile were produced by Wire Explosion Process (WEP), in oxygen ambience of different pressures. K, the ratio of energy stored in the capacitor to the sublimation energy of the wire was used as another parameter to control the phase and morphology of the NPs. Synthesized particles were characterized by X-ray diffraction studies which indicated the presence of mixed phase of NPs. The rutile content increased with increase in K and/or with decrease of oxygen pressure, P. TEM micrographs showed the nanoparticles produced are spherical in shape and follows log-normal distribution. Mean particle size and band gap (measured by UV–Vis diffuse reflectance spectroscopy) decreased with increase in K and/or decrease in P. Photocatalytic degradation of methylene blue (MB) dye was tested with TiO2 NPs produced at two extreme conditions. The optimum concentrations of NPs were found for the degradation of MB.
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