Journal of Materials Research and Technology Journal of Materials Research and Technology
J Mater Res Technol 2018;7:7-13 DOI: 10.1016/j.jmrt.2017.02.001
Original Article
Ionic liquid assisted hydrothermal synthesis of TiO2 nanoparticles: photocatalytic and antibacterial activity
Kristappagari Manjunatha, Lakshmi Sagar Reddy Yadavb,c, Thummala Jayalakshmib, Viswanath Reddyd, Hanumanthappa Rajanaikae, Ganganagappa Nagarajub,,
a Centre for Nano and Material Sciences, Jain University, Kanakapura, Karnataka 562112, India
b Department of Chemistry, Siddaganga Institute of Technology, Tumkur 572103, India
c Department of Chemistry, BMS Institute of Technology, Bangalore 560064, India
d Department of General Education, Gulf Medical University, Ajman, UAE
e Department of Biotechnology, Tumkur University, Tumkur 572101, India
Received 20 July 2016, Accepted 14 February 2017

In this work, anatase phase TiO2 nanoparticles have been successfully synthesized at 130°C for 2 days via ionic liquid-assisted hydrothermal method. The obtained products were characterized using various analytical techniques. X-ray diffraction data reveals that sample has anatase TiO2 nanoparticles. FTIR spectrum shows that the presence of ionic liquid and indicates Ti-O-Ti peak at around 456nm and the bands at 1410 and 1581cm−1 indicates C–H in-plane vibrations and stretching of imidazolium ring. UV–Vis spectrum shows maximum band at 272nm due to TiO2 nanoparticles. SEM images show the TiO2 nanoparticles are almost spherical in shape. TEM images reveal that the average diameters of TiO2 nanoparticles are in the range of 35nm. TiO2 nanoparticles exhibited excellent photocatalytic activity for the degradation of methylene blue organic dye. Furthermore, the antibacterial properties of TiO2 nanoparticles were investigated against four bacterial strains using the agar well diffusion method.

TiO2, Hydrothermal, Ionic liquid, Photocatalysis, Antibacterial activity
J Mater Res Technol 2018;7:7-13 DOI: 10.1016/j.jmrt.2017.02.001
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