HYDROTHERMAL PRODUCTION, CHARACTERIZATION, ANTIBACTERIAL ACTIVITY AND HUMIDITY SENSOR APPLICATION OF CERIUM OXIDE NANOPARTICLES

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Dr. Manda Saritha
St. Peter's Engineering College, Hyderabad Email: mandasaritha04@gmail.com

Mr. Gaurav singh
St. Peter's Engineering College, Hyderabad Email: gauravnanotechnology@gmail.com

Dr Asif Jamal G.A
Department of Botany, Justice Basheer Ahmed Sayeed College for Women (Autonomous) Chennai, Tamil Nadu, Email: drasifjamal1978@gmail.com

Dr. Prasanna Srinivas R
Department of Microbiology, M.S Ramaiah College of Arts, Science and Commerce Bengaluru, Karnataka, Email: microprasanna@gmail.com

Dr. Vinayaka K. S
Department of Botany, Sri Venkataramana Swamy College, Vidyagiri, Bantwal, Karnataka Email: ks.vinayaka@gmail.com

Dr. Suman Pawar
Dept of Chemical Engineering, Siddaganga Institute of Technology, Tumkur Email: svp@sit.ac.in

Vol 17, No 10 ( 2022 )   |  Licensing: CC 4.0   |   Pg no:2177-2187   |   Published on: 31-10-2022

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Abstract
Using a hydrothermal technique and various surfactants, including polyethylene glycol (PEG), cetyltrimethylammonium bromide (CTAB), and sodium dodecyl benzenesulfonate (SDBS), nanosized CeO2 powders were created. Transmission electron microscopy, Raman spectroscopy, and X-ray diffraction were all used to analyse the products' phase structures and morphologies. Between these three samples, the one containing CTAB as the surfactant (CeO2-C) has the highest specific surface area and the lowest particle size. In comparison to those made using CeO2-P and CeO2-S, the humidity sensor created with CeO2-C performs better. With a change in relative humidity (RH) from 15.7 to 95%, the CeO2-C sensor's impedance falls by nearly five orders of magnitude. The response and recovery times are, respectively, 7 and 7 s. These findings suggest that the addition of cationic surfactant can significantly enhance the performance of CeO2 humidity sensors. The antibacterial activity was performed against a set of bacterial strains shows CeO2 NPs possessed significant antibacterial properties

Keywords:
CeO2 nanopowders, humidity sensor, hydrothermal, Cerium nano particles and antibacterial activity.

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