Biogenically synthesized porous TiO 2 nanostructures for advanced anti-bacterial, electrochemical, and photocatalytic applications.

Autor: Beevi Sharafudheen S; Department of Physics and Research Centre, St. Jude's College, Thoothoor, Affiliated to Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli, Tamilnadu, 627012, India., Vijayakumar C; Department of Physics and Research Centre, St. Jude's College, Thoothoor, Affiliated to Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli, Tamilnadu, 627012, India. Electronic address: vijayakumarsuba123@gmail.com., Anjana PM; Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Hubballi, Karnataka, 580 031, India. Electronic address: dranjanasree@gmail.com., Bindhu MR; Department of Physics, Sree Devi Kumari Women's College, Kuzhithurai, 629163, Tamil Nadu, India., Alharbi NS; Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia., Khaled JM; Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia., Kadaikunnan S; Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia., Kakarla RR; School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW, 2006, Australia., Aminabhavi TM; Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Hubballi, Karnataka, 580 031, India; School of Engineering, University of Petroleum and Energy Studies (UPES), Dehradun, Uttarakhand 248007, India; Korea University, Seoul, Republic of Korea. Electronic address: aminabhavit@gmail.com.
Jazyk: angličtina
Zdroj: Journal of environmental management [J Environ Manage] 2024 Aug; Vol. 366, pp. 121728. Date of Electronic Publication: 2024 Jul 10.
DOI: 10.1016/j.jenvman.2024.121728
Abstrakt: This study develops environmentally benign capping technique to synthesize nanoparticles of Curcuma longa-coated titanium dioxide (CR-TiO 2 ) from titanium isopropoxide by utilizing the extract of Rosa rubiginosa flowers as reducing and chelating agent. The biogenically synthesized nanoparticles revealed excellent anti-bacterial, electrochemical, and photocatalytic properties due to the presence of porous TiO 2 nanostructures. The sharp peaks by XRD pattern showed the crystallinity and phase purity of TiO 2 nanoparticles. BET analysis proved mesoporous nature of the materials with specific surface area of 134 m 2  g -1 . The vibrational spectra suggest hydroxyl groups from flavonoids of Curcuma longa acting as functionalizing agent for TiO 2 nanoporous structures with visible luminescence, which is proven in fluorescence spectra and is applicable for photocatalytic studies. The anti-bacterial studies showed good inference on TiO 2 nanoparticles against Pseudomonas auruginosa and proved it to be an excellent antipseudomonal agent with the oxidative potential. The maximum degradation of phenol red dye in the presence of TiO 2 under visible light conditions was observed. The supercapacitor fabricated using the biogenic TiO 2 three-electrode system exhibited a specific capacitance of 128 Fg -1 (10 mV s -1 ), suggesting it as an excellent electrode material. The LSV curve at 50 mV s -1 scan rate showed that oxygen reduction potential (ORR) of CR-TiO 2 electrodes was 121 mV. The present study is a new application of nanoparticles in sustainability consideration of the environment as well as a solution to the power crisis with fewer limitations. The well-distinguished antidiabetic and BSA denaturation potential suggests that these porous TiO 2 nanostructures can be useful for drug delivery as glucose inhibitors and oral anti-inflammatory drugs with the restriction of adverse side effects.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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