Efficient Removal of Malachite Green Dye and Antioxidant Properties, Mechanical Analysis of Chitosan Film Dopped with Biosynthesized Iron Nanoparticle from Moringa Oleifera Leaf
Velmurugan Ganesan, Jasgurpreet Singh Chohan, K. Narayanamoorthy, D Elil Raja, Ramya Maranan, M. Nagaraj, Praveen Barmavatu
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Abstract
Green synthesis, favoured for its eco-friendliness, simplicity, and cost effectiveness, was employed to synthesise iron nanoparticles (Fe-NPs), using Moringa oleifera leaf extract (MOL) as a capping and reducing agent. The biosynthesised Fe-NPs were characterised through UV–Vis spectroscopy, XRD, FTIR, EDAX, and TEM, confirming their presence and stability. In the UV–Vis spectra, there was a peak at 414 nm indicating successful reduction of Fe3+ ions, while XRD analysis indicated crystalline structures where Debye–Scherrer equations gave a particle size of approximately 22 nm. Biofunctional groups responsible for reduction and stabilisation of Fe-NPs were identified by FTIR analysis, while elemental composition was confirmed using EDAX, as spherical Fe-NPs from TEM analysis had an average size of 20 nm. Photocatalytic studies have shown how efficient malachite green (MG) dyes are broken up by these materials, with maximum degradation (97.21%) occurring at pH 3.5. At dye concentrations higher than this level, degradation efficiency decreases due to light absorption and competition for reactive sites. The biosynthesised Fe-NPs exhibited strong antioxidant properties with EC50 values for DPPH and ABTS radical scavenging activities of 21.36 ± 1.01 µg/mL and 24.52 ± 1.20 µg/mL, respectively. Additionally, the mechanical properties of the chitosan film reinforced with Fe-NPs were assessed, with the E-type combination (73 ml of chitosan and 2 ml of Fe-NPs) revealing the highest tensile strength of 81 MPa and an elastic modulus of 2389 MPa. These discoveries point out that MOL-derived Fe-NPs can be used in environmental applications such as wastewater treatment processes.
期刊介绍:
Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments.
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