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In this paper we report the antibacterial activity in the absence of UV–Vis irradiation of TiO2 nanoparticles, in amorphous, anatase and rutile phases, obtained by the sol–gel process, on Escherichia coli strains. The synthesized TiO2 powders were characterized using X-ray diffraction (XRD), IR spectroscopy and UV–Vis absorption, as well as scanning and transmission electron microscopies. The XRD...
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