Eco-friendly green synthesis of silver nanoparticles using Luffa acutangula: synthesis, characterisation and catalytic degradation of methylene blue and malachite green dyes

In this study, catalytic-degradation of dyes such as methylene blue (MB) and malachite green (MG) was carried out by using silver nanoparticles (AgNPs), obtained by adopting the flower extract of Luffa acutangula (LA). The biogenic synthesised LA-AgNPs were characterised by using UV-Vis spectroscopy...

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Bibliographic Details
Published in:International journal of environmental analytical chemistry 2024-08, Vol.104 (10), p.2255-2267
Main Authors: Rajasekar, Rajamanickam, Thanasamy, Radha, Samuel, Michael, Jebakumar Immanuel Edison, Thomas Nesakumar, Raman, Natarajan
Format: Article
Language:English
Subjects:
Chemical synthesis
Degradation
dye degradation
Dyes
dynamic light scattering
Electrons
Fourier transforms
Infrared analysis
Infrared spectroscopy
Light scattering
Luffa acutangula
Malachite green
Methylene blue
Nanoparticles
Photon correlation spectroscopy
Silver
silver nanoparticles
Spectrum analysis
Surface plasmon resonance
Ultraviolet radiation
Ultraviolet spectroscopy
X-ray diffraction
Zeta potential
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Summary:In this study, catalytic-degradation of dyes such as methylene blue (MB) and malachite green (MG) was carried out by using silver nanoparticles (AgNPs), obtained by adopting the flower extract of Luffa acutangula (LA). The biogenic synthesised LA-AgNPs were characterised by using UV-Vis spectroscopy, Fourier-transform infrared spectroscopy (FTIR), DLS (dynamic light scattering) with zeta potential analysis, X-ray diffraction (XRD) and high-resolution transmission electron microscopic(HR-TEM) analyses. The typical surface plasmon resonance peak of LA-AgNPs was observed at 428 nm, as confirmed from UV-Vis spectrum. The formation of LA-AgNPs was observed through colour transformation from pale yellow to dark-brown due to the reduction of Ag + . Synthesised LA-AgNPs displayed spherical shape and face-centred cubic structure with an average size of 10-30 nm. The effects of various parameters such as initial extract concentration, time and time process were studied. The degradation reactions of MB and MG are found to follow the Langmuir-Hinshelwood mechanism with a pseudo-first-order kinetic model. Biogenic synthesised LA-AgNPs showed good degradation ability to reduce the MG and MB with NaBH 4 .
ISSN:0306-7319
1029-0397
DOI:10.1080/03067319.2022.2060089