About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
|
Symposium
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Advances in Dielectric Materials and Electronic Devices
|
Presentation Title |
Photoinduced Enhanced Raman Spectroscopy and Antibacterial Property of Titanium Oxide Hollow Nanosphere |
Author(s) |
Shubhadip Atta, Shashank Bhushan Das, Arti Sharma, Shubham Sharma, Soumik Siddhanta, Prashant Mishra, Soutik Betal |
On-Site Speaker (Planned) |
Shubhadip Atta |
Abstract Scope |
Titanium oxide (TiO2) hollow nanospheres were synthesized using Ultrasonic Spray Pyrolysis (USP) method. The DLS study confirms the uniform size distribution of the nanosphere (~900 nm), and HR-TEM measurements show the hollowness of TiO2 nanosphere with shell thickness around ~10 nm. Further calcination at 700° C for 3 hrs reduced the size of TiO2 hollow nanosphere to ~250 nm. The photoinduced enhanced raman spectroscopy (PIERS) study reveals the generation of vacancy defects below the conduction band under the presence of UV light. Also, PIERS chemical enhancement of TiO2 is higher than normal SERS measurement. The antibacterial activity of calcined TiO2 sample against Escherichia coli is significantly higher than Staphylococcus aureus bacterial under illumination of visible light source with a minimum inhibitory concentration (MIC) value of 312.5 μg/ml. This result tells the improvement of antibacterial activity, generation of vacancy defects and chemical enhancement is possible in TiO2 (USP_700° C) sample. |