Green synthesis of MnO 2 nanoparticles from Psidium guajava leaf extract: Morphological characterization, photocatalytic and DNA/BSA interaction studies.

Autor: Karthik P; Department of Chemistry, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, Tamil Nadu 602 105, India., Jose PA; Department of Science and Humanities (Chemistry), E.G.S. Pillay Engineering College, Nagapattinam, Tamil Nadu 611 002, India., Chellakannu A; Department of Natural Products Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, Tamil Nadu 625 021, India., Gurusamy S; Department of Chemistry, V.O. Chidambaram College, Tuticorin, Tamil Nadu 628 008, India., Ananthappan P; Department of Natural Products Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, Tamil Nadu 625 021, India., Karuppathevan R; Department of Immunology, School of Biological Science, Madurai Kamaraj University, Madurai, Tamil Nadu 625021, India., Vasantha VS; Department of Natural Products Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, Tamil Nadu 625 021, India., Rajesh J; Department of Chemistry, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, Tamil Nadu 602 105, India. Electronic address: mkuraji@gmail.com., Ravichandran S; Department of Chemistry, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, Tamil Nadu 602 105, India., Sankarganesh M; Department of Chemistry, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, Tamil Nadu 602 105, India. Electronic address: msankarajan1990@gmail.com.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2024 Feb; Vol. 258 (Pt 2), pp. 128869. Date of Electronic Publication: 2023 Dec 17.
DOI: 10.1016/j.ijbiomac.2023.128869
Abstrakt: In this work, a simple, efficient and eco-friendly green synthesis of manganese dioxide nanoparticles (MnO 2 NPs) by Psidium guajava leaf extract was described. Fourier-Transform infrared spectra results revealed that involvement of the plant extract functional groups in the formation of MnO 2 NPs. The UV-vis absorption spectra of the synthesized MnO 2 NPs exhibited absorption peaks at 374 nm, which were attributed to the band gap of the MnO 2 NPs. Crystal phase identification of the MnO 2 NPs were characterized by X-ray diffraction analysis and the formation of crystalline MnO 2 NPs have been confirmed. Furthermore, scanning electron microscopy analysis showed that the synthesized MnO 2 NPs have a spherical in shape. Interestingly, the prepared green synthesized MnO 2 NPs showed catalytic degradation activity for malachite green dye. Malachite green's photocatalytic degradation was detected spectrophotometrically in the wavelength range of 250-900 nm, and it was discovered to have a photodegradation efficiency of 75.5 % within 90 min when exposed to solar radiation. Green synthesized MnO 2 NPs are responsible for this higher activity. An interaction between synthesized NPs and biomolecules, including CT-DNA and BSA was also evaluated. The spectrophotometric and Fluoro spectroscopic analyses indicate a gradual reduction in peak intensities and shifts in wavelengths, indicating binding and affinity between the NPs and the biomolecules.
Competing Interests: Declaration of competing interest The authors declare that they have no conflicts of interest regarding the publications of this paper.
(Copyright © 2023 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: