Synthesis and characterization of tellurium oxide nanoparticles using pulse laser ablation and study their antibacterial activity

Abstract In this study, tellurium oxide (TeO 2 ) nanoparticles were synthesized via PLA of tellurium targets with a 1064 nm laser in distilled water. The morphology and the particle size of the nanoparticles were characterized by scanning electron microscope (SEM) and atomic force microscope (AFM) respectively. The optical properties were studied by UV-Visible Spectrophotometer. Tellurium oxide nanoparticles with diameters of 55 nm were formed in a colloid solution. The UV–vis spectrum of the material shows a strong peak of around 200 nm. In addition, the morphology of gram-negative bacteria and gram-positive attachment of TeO 2 nanoparticles was studied by using SEM measurement. The activity of TiO 2 nanoparticles toward the inhibition and removal of Escherichia coli, Proteus, Pseudomonas bacteria and Staphylococcus aureus was investigated and discussed.