Effects of Solvent on the Structure and Properties of Titanium Dioxide Nanoparticles and Their Antibacterial Activity

Document Type: Research Article

Authors

1 Department of Chemistry, Kohat University of Science and Technology, Kohat

2 Department of Chemistry, Kohat University of Science & Technology, Kohat-26000 (Khyber Pakhtunkhwa) Pakistan

3 Department of Chemistry, Kohat University of Science & Technology, Kohat-26000 (Khyber Pakhtunkhwa) Pakistan.

4 Department of Botany, Kohat University of Science & Technology, Kohat-26000 (Khyber Pakhtunkhwa) Pakistan

5 Department of Chemistry, Islamia College University Peshawar, Khyber Pakhtunkhwa, Pakistan

6 Department of CHemistry, Kohat University of Science and Technology, Kohat, Khyber Pakhtunkhwa, Pakistan

Abstract

Titanium dioxide is semiconductor metal oxide having many applications in photocatalytic activities, cosmetics and in food industry. It exists in three major crystalline forms: anatase, rutile and brookite. The solvents play major role in synthesis, stability and morphology of the metal oxide nanoparticles. It affects both on the phase and particle size of metal oxide. The main focus of present study is to establish the effects of solvent on the phase of TiO2 nanoparticle. Titanium dioxide (TiO2) nanoparticles have been synthesized by sol-gel method using different solvents. The XRD results showed that the average crystallite size of all the samples were in the range of 5-25 nm. TiO2 nanoparticles prepared in different solvents gave different FTIR peaks. AFM data clarified that majority of samples showed spherical shape with average particle size ranging from 10-68 nm. The nanoparticles prepared in diethanolamine, acetic acid and propionic acid solvents showed comparatively good antibacterial activity due to rutile phase of the nanoparticles. pH of the solvent also influence on titanium dioxide structure and antibacterial properties.

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