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Microstructure and Photocatalytic Activity of the Anti-Virus CaWO4:Eu3 + Nanoparticles

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CaWO4:Eu3+ anti-virus nanoparticles have been successfully prepared by a modified sol–gel method. Characteristics of nano-structure were measured by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Experimental results show that Rhodamine B and methyl orange could be degraded effectively by Scheelite nanoparticles (40–50 nm) and the photocatalytic decomposition was characterized by UV-visible absorption spectra. Inhibitory actions against herpes simplex virus (HSV) reflected the anti-virus behavior tungstenic nanoparticles. Owing to the nano-traps shown in high resolution transmission electron microscopy (HRTEM), microstructure of tungstate on the surface that looks like bunches of grapes, which make the nanoparticles absorbed by organic dyestuff and virus, due to the high active hydroxyl free radicals on surface of nanoparticles and electrons complement from semiconductor photoelectric behavior. This micro-battery analysis explains photocatalytic activity and anti-virus behavior, and displays the relationship between them, which gives support to prove the oxidation and deoxidization circulation theory of Yamase.
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Document Type: Short Communication

Publication date: April 1, 2015

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  • Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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