Abstract
This research evaluates photocatalytic bactericidal efficiencies of Ag-TiO2/Fe3O4in visible light using target pollutants that includeAeromonas hydrophila, Edwardsiella tarda, and Photobacterium damselaesubsp.piscicida. The investigation started with Ag-TiO2/Fe3O4synthesis and calcination followed by a series of product tests that include the examination of crystallite phase, light absorption, element composition morphology, and magnetic properties. The results of the experiment indicate that Ag and Fe3O4significantly enhanced the light absorption capacity of TiO2in the entire visible light range. The Ag-TiO2/Fe3O4prepared in this study displays significantly enhanced visible light absorption and narrowed band gap energy. The magnetic property of Ag-TiO2/Fe3O4made it easy for retrieval using a permanent magnet bar. The photocatalytic activity of Ag-TiO2/Fe3O4remains above 85% after three application cycles, which indicates high and favorable efficiency in bactericidal evaluation. The experiments have proved that the Ag-TiO2/Fe3O4magnetic photocatalyst is a promising photocatalyst for antibacterial application under visible light.
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