Abstract
In this research, titanium dioxide nanoparticles (TiO2 NPs) were prepared through the sol-gel process at an acidic medium (pH3).TiO2 nanoparticles were prepared from titanium trichloride (TiCl3) as a precursor with Ammonium hydroxide (NH4OH) with 1:3 ratio at 50 °C. The resulting gel was dried at 70 °C to obtain the Nanocrystalline powder. The powder from the drying process was treated thermally at temperatures 500 °C and 700 °C. The crystalline structure, surface morphology, and particle size were studied by using X-ray diffraction (XRD), Atomic Force Microscopy (AFM), and Scanning Electron Microscope (SEM). The results showed (anatase) phase of titanium dioxide with the average grain size of 110 nm at 500 °C calcination temperature, and (anatase- rutile) mixed phase of titanium dioxide with the average particle size of 118.1 nm at 700 °C calcination temperature. The anti-bacterial activity of the synthesis specimens was recorded through the Kirby-Bauer disc method (disc devotion method). The results displayed a pretty excellent antibacterial activity of TiO2 NPs to bacteria strains: Gram positive staphylococcus aureus, gram negative pseudomonas aeruginosa, and "gram negative escherichia coli. The sensitivity of the tested bacteria to TiO2 NPs depends on the oxidation state of the TiO2 NPs, particle size, volume, and the density of the unit cell. The small- average particle size of titanium dioxide particles showed high antibacterial activity against bacteria, while the larger- average particle size of titanium dioxide particles showed less antibacterial activity. The novelty of this production is the manufacturing of a novel kind of TiO2 NPs and achievement its best antibacterial activity.
Highlights
Titanium dioxide nanoparticles (TiO2 NPs) have been of interest in a wide range of applications such as photocatalyst [1], a gas sensor [2], dyematerials [8]
From X-ray diffraction (XRD) characterization, the sample calcined at 500 ̊C indicates Anatase phase with average crystallite size 14.96 nm and the sample calcined at 700 ̊C indicate Anatase-Rutile mixed phase with average crystallite size 31.59 nm
From the estimation of Scanning Electron Microscope (SEM) and Atomic Force Microscope (AFM), it is demonstrated that an expansion in particle size of TiO2 NPs is related with the expansion in the calcination temperatures and the diameter of the inhibition zone
Summary
Titanium dioxide nanoparticles (TiO2 NPs) have been of interest in a wide range of applications such as photocatalyst [1], a gas sensor [2], dyematerials [8]. Bacterial and fungicidal impacts of TiO2 on Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa have been accounted sensitized solar cells [3], Nanomedicine [4], and for [9]. Acknowledged as an exemplary inorganic antibacterial biomaterial, TiO2 NPs have been given much interest due to the impact of TiO2 NPs was done with E. coli infections, microorganisms and organisms malignancy [10, 11]. TiO2 NPs is broadly utilized as a self-sanitizing and self-purifying executed by contact with TiO2 NPs. Hydroxyl radicals (OH) and Responsive Oxygen Species (ROS) produced on the TiO2 surface allow a section in inactivating microorganisms by oxidizing the polyunsaturated phospholipid part of the cell layer material in various utilizations [7]. TiO2 NPs have of organisms [6,9,12,13,14]. TiO2 NPs are around been affirmed by the "American Food and Drug one thousand or conceivably ten thousand times
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
