E Katouei Zadeh - Department of Material Science Engineering, Shiraz University, Shiraz, Iran
S.M Zebarjad - Department of Material Science Engineering, Shiraz University, Shiraz, Iran
K Janghorban - Department of Material Science Engineering, Shiraz University, Shiraz, Iran

Growing resistance of microorganisms to antibiotics has renewed a great interest towards investigatingmethods to improve antibacterial properties of nanoparticles. Nitrogen enhances the photocatalytic behaviour ofsemiconductors by narrowing its band gap. The aims of present work are synthesizing and investigating the antibacterialproperties of N-doped TiO2 nanoparticles. Disk diffusion method was performed to assess the antibacterial activity ofcotton fabrics coated with N-doped TiO2 nanoparticles against gram negative Escherichia coli bacteria. The antibacterialactivities of the fabrics were measured semi-quantitatively by the agar disk diffusion method. The results showed asignificant antibacterial activity of N-TiO2 nanoparticles coated onto fabrics against bacteria. The elemental analysis EDSover fabrics after deposition process shows the distribution of contributed elements.

N-dope TiO2 synthesis; photocatalytic property, antimicrobial