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Enhanced larvicidal, antibacterial, and photocatalytic efficacy of TiO 2 nanohybrids green synthesized using the aqueous leaf extract of Parthenium hysterophorus.

Authors :
Thandapani K
Kathiravan M
Namasivayam E
Padiksan IA
Natesan G
Tiwari M
Giovanni B
Perumal V
Source :
Environmental science and pollution research international [Environ Sci Pollut Res Int] 2018 Apr; Vol. 25 (11), pp. 10328-10339. Date of Electronic Publication: 2017 May 23.
Publication Year :
2018

Abstract

Titanium dioxide nanoparticles are emerging as a biocompatible nanomaterial with multipurpose bioactivities. In this study, titanium dioxide (TiO <subscript>2</subscript> ) nanoparticles were effectively synthesized using the aqueous leaf extracts of Parthenium hysterophorus prepared by microwave irradiation. TiO <subscript>2</subscript> nanoparticles were fabricated by treating the P. hysterophorus leaf extracts with the TiO <subscript>4</subscript> solution. Biologically active compounds such as alcohols, phenols, alkanes, and fluoroalkanes were involved in bioreduction of TiO <subscript>4</subscript> into TiO <subscript>2</subscript> . The formation of green-engineered TiO <subscript>2</subscript> nanoparticles was confirmed by UV-vis spectroscopy, Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), and energy-dispersive X-ray (EDX) spectroscopy and further characterized by X-ray diffraction (XRD) studies. UV-vis spectroscopy analysis showed maximum absorbance at 420 nm due to surface plasmon resonance of synthesized TiO <subscript>2</subscript> NPs. FTIR spectrum of the engineered TiO <subscript>2</subscript> NPs showed the presence of bioactive compounds in the leaf extract, which acted as capping and reducing agents. FESEM exhibited an average size of 20-50 nm and a spherical shape of TiO <subscript>2</subscript> NPs. EDX analysis indicated the presence of TiO <subscript>2</subscript> NPs by observing the peaks of titanium ions. XRD results pointed out the crystalline nature of engineered TiO <subscript>2</subscript> NPs. The larvicidal activity of TiO <subscript>2</subscript> NPs was studied on fourth instar larvae of dengue, Zika virus, and filariasis mosquito vectors Aedes aegypti and Culex quinquefasciatus. Antimicrobial efficacy of TiO <subscript>2</subscript> NPs was assessed on clinically isolated pathogens Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Klebsiella pneumoniae, Proteus vulgaris, and Staphylococcus epidermidis. Besides, we found that TiO <subscript>2</subscript> NPs are able to quickly degrade the industrially harmful pigments methylene blue, methyl orange, crystal violet, and alizarin red dyes under sunlight illumination. Overall, this novel, simple, and eco-friendly approach can be of interest for the control of vector-borne diseases, as well as to formulate new bactericidal agents and to efficiently degrade dye solutions in the polluted areas.

Details

Language :
English
ISSN :
1614-7499
Volume :
25
Issue :
11
Database :
MEDLINE
Journal :
Environmental science and pollution research international
Publication Type :
Academic Journal
Accession number :
28537028
Full Text :
https://doi.org/10.1007/s11356-017-9177-0