Synthesis and study the concentration effect on the photocatalytic activity of titania nanoparticles as anti-bactria using reactive magnetron sputtering technique

• Published in: Optical and quantum electronics 2022, Vol.54 (6), Article 377
• Main Authors: Al-Maliki, Firas J., Al-Rubaiy, Maryam A.
• Format: Article
• Language: English
• Subjects: Anatase; Catalytic activity; Characterization and Evaluation of Materials; Coliforms; Computer Communication Networks; Deposition; E coli; Electrical Engineering; Glass substrates; Lasers; Magnetron sputtering; Mixing ratio; Nanoparticles; Optical Devices; Optics; Photocatalysis; Photonics; Physics; Physics and Astronomy; Rutile; Thin films; Titanium; Titanium dioxide; Ultraviolet radiation
• ISSN: 0306-8919; 1572-817X
• DOI: 10.1007/s11082-022-03756-y

In this work, the dc reactive magnetron sputtering technique was used to prepare and deposit nanostructured titanium dioxide (TiO 2 ) thin films on glass substrates. Titanium dioxide thin films of mixed phase (anatase+rutile) and single phase (anatase) were prepared using different gas mixing ratios, and for both of the two phases, they were diagnosed via x-ray diffraction (XRD). It was found that the contents of rutile in mixed phase dependent on the deposition time increased from the ratio of 40 to 46% and 50% as the deposition time increased from 3 h to 3.30 and 4 h. The photocatalytic activity of the mixed and single phase TiO 2 was measured by kill the bacteria Escherichia coli (E.Coli) under exposure to UV-radiation. It was proven that the photocatalytic activity in the mixed phase (TiO 2 ) gave better results weight fraction is 40% as an antibacterial activity. Based on the obtained results anti-bacterial activity of dioxide titanium nanoparticles was dependent on the concentration and phase of TiO 2 and weight fraction of mixed-phase.