Phytosynthesis and characterization of tin-oxide nanoparticles (SnO 2 -NPs) from Croton macrostachyus leaf extract and its application under visible light photocatalytic activities.

Autor: Tasisa YE; Department of Physics, College of Natural and Computational Sciences, Wollega University, Nekemte, Ethiopia.; Department of Chemistry, Indian Institute of Technology Indore, Indore, 453552, Madhya Pradesh, India., Sarma TK; Department of Chemistry, Indian Institute of Technology Indore, Indore, 453552, Madhya Pradesh, India., Sahu TK; Department of Chemistry, Indian Institute of Technology Indore, Indore, 453552, Madhya Pradesh, India., Krishnaraj R; Department of Mechanical Engineering, College of Engineering and Technology, Dambi Dollo University, Dembi Dolo, Ethiopia. prof.dr.krishnaraj@dadu.edu.et.; Center for Global Health Research, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India. prof.dr.krishnaraj@dadu.edu.et.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 May 11; Vol. 14 (1), pp. 10780. Date of Electronic Publication: 2024 May 11.
DOI: 10.1038/s41598-024-60633-2
Abstrakt: Nanotechnology is rapidly becoming more and more important in today's technological world as the need for industry increases with human well-being. In this study, we synthesized SnO 2 nanoparticles (NPs) using an environmentally friendly method or green method from Croton macrostachyus leaf extract, leading to the transformation of UV absorbance to visible absorbance by reducing the band gap energy. The products underwent UV, FTIR, XRD, SEM, EDX, XPS, BET, and DLS for characterization. Characterization via UV-Vis spectroscopy confirmed the shift in absorbance towards the visible spectrum, indicating the potential for enhanced photocatalytic activity under visible light irradiation. The energy band gap for as-synthesized nanoparticles was 3.03 eV, 2.71 eV, 2.61 eV, and 2.41 eV for the 1:1, 1:2, 1:3, and 1:4 sample ratios, respectively. The average crystal size of 32.18 nm and very fine flakes with tiny agglomerate structures of nanoparticles was obtained. The photocatalytic activity of the green-synthesized SnO 2 nanoparticles was explored under visible light irradiation for the degradation of rhodamine B (RhB) and methylene blue (MB), which were widespread fabric pollutants. It was finally confirmed that the prepared NPs were actively used for photocatalytic degradation. Our results suggest the promising application of these green-synthesized SnO 2 NPs as efficient photocatalysts for environmental remediation with low energy consumption compared to other light-driven processes. The radical scavenging experiment proved that hydroxyl radicals ( _ OH) are the predominant species in the reaction kinetics of both pollutant dyes under visible light degradation.
(© 2024. The Author(s).)
Databáze: MEDLINE
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