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Nanoparticles of tungsten oxide and ultraviolet light are wounding power to kill fungus and bacteria

Researchers from the Institute of Theoretical and Experimental Biophysics of Russian Academy of Sciences (RAS) and Institute for General and Inorganic Chemistry RAS together with Ukrainian colleagues have developed a new way of producing nanoparticles of tungsten oxide and studied their impact on biological objects. The corresponding research article has been published in the Journal of Photochemistry and Photobiology B.
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Tungsten (wolfram) oxide WO3 is a contrast in X-rays substance which is very perspective for computer tomography. The studies on the extent of its safety for humans has shown that under ultraviolet irradiation, tungsten oxide becomes deleterious for bacteria and fungus.

The scientists note that the newly obtained data allow for creating antibacterial coverings for hospitals, public transport, and other public places. Under the quartz treatment of surfaces covered with tungsten oxide, the sterilization effect of ultraviolet of quartz lamps will be boosted, and almost all prokaryote cells will be killed. Outside hospitals, the similar effect can be achieved by solar light. By combining tungsten oxide with ultraviolet lamps of high capacity, one could apply nanoparticles of this compound also for purification of wastewaters.

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