Magnetic Field-Assisted Laser Ablation of Titanium Dioxide Nanoparticles in Water for Anti-Bacterial Applications

• Published in: Journal of inorganic and organometallic polymers and materials Vol. 31; no. 9; pp. 3649 - 3656
• Main Authors: Bahjat, Hasan H., Ismail, Raid A., Sulaiman, Ghassan M., Jabir, Majid S.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.09.2021; Springer Nature B.V
• Subjects: Ablation; Anatase; Antiinfectives and antibacterials; Chemistry; Chemistry and Materials Science; E coli; Electron microscopes; Electron microscopy; Energy gap; Field emission microscopy; Inorganic Chemistry; Laser ablation; Magnetic fields; Microscopy; Nanoparticles; Neodymium lasers; Organic Chemistry; Polymer Sciences; Raman spectroscopy; Semiconductor lasers; Spectrum analysis; Titanium; Titanium dioxide; Titanium oxides; Vibration mode; X-ray diffraction; YAG lasers; Water; nanoparticles; TiO; Laser ablation; Antibacterial; Magnetic field
• DOI: 10.1007/s10904-021-01973-8
• ISSN: 1574-1443

Titanium oxide nanoparticles (TiO 2 ) were produced by pulsed Nd:YAG laser ablation in water under the effect of an external magnetic field. Various techniques such as X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy Dispersive X-ray (EDX), transmission electron microscopy (TEM), UV–Vis spectroscopy, and Raman spectroscopy were used to characterize the TiO 2 nanoparticles. The XRD analysis of titanium oxide nanoparticles revealed that the synthesized nanoparticles were polycrystalline with mixed of tetragonal anatase and rutile TiO 2 . Scanning electron microscope shows the formation of spherical nanoparticles and the particles agglomeration decreases and the particle size from increases from 25 to 35 nm when the magnetic field applied. The optical energy gap of TiO 2 nanoparticles decreased from 4.6 to 3.4 eV after using the magnetic field during the ablation. Raman studies show the existence of five vibration modes belong to TiO 2 . The antibacterial effect assay revealed a largest inhibition zone in S. aureus and E. coli , with a more potent effect for TiO 2 NPs prepared by magnetic field when compared with that prepared without presence of magnetic field.