Abstract
Adsorption of organic pollutants, toxic metal ions, and removal of harmful bacteria can give us clean and pure drinkable water from wastewater resources. Respective magnetite nanoparticles (MNPs) were synthesized using a cheaper and greener way in an open-air environment with the use of crude latex of Jatropha curcas (JC) and leaf extract of Cinnamomum tamala (CT). Characterization of MNPs had been performed by dynamic light scattering (DLS), Ultraviolet-visible (UV-vis) spectroscopy, Fourier-transform infrared (FTIR) spectroscopy, powdered X-ray diffraction (XRD), and field emission scanning electron microscope (FE-SEM). The size ranges of the synthesized MNPs were observed in between 20–42 nm for JC-Fe3O4 and within 26–35 nm for CT-Fe3O4 by FE-SEM images. The effect of synthesized magnetic nanoparticles in wastewater treatment (bacterial portion), dye adsorption, toxic metal removal as well as antibacterial, antioxidant, and cytotoxic activities were studied. This purification will lead to an increase in the resources of pure drinking water in the future.
Highlights
The freshwater scarcity and water pollution problems have been increasingly growing worldwide in the last several years [1]
There are different procedures reported for the synthesis of magnetite nanoparticles (MNPs) by the co-precipitation methods, and most of them require an inert environment and, in some cases, an elevated temperature
We have reported the synthesis of Jatropha curcas (JC)-Fe3O4 and Cinnamomum tamala (CT)-Fe3O4 NPs at room temperature without inert gas environment and elevated temperature
Summary
The freshwater scarcity and water pollution problems have been increasingly growing worldwide in the last several years [1]. Importance on industry and agricultural evolution leads to contamination of water with harmful organic pollutants and metals like cobalt (Co), copper (Cu), nickel (Ni), lead (Pb), zinc (Zn), arsenic (As), cadmium (Cd), chromium (Cr), and mercury (Hg) [3,4]. Another important problem is waterborne harmful bacteria viz. Salmonella typhosa (typhoid), Vibrio cholerae (cholera), Escherichia coli (diarrhea), etc. No literature has reported the green syntheses of above two natural products-based MNPs. The two nanoparticles CT-Fe3O4 and JC-Fe3O4 are further characterized, and their applications in wastewater treatment as well as their antibacterial activity, antioxidant activity, and cytotoxicity have been explored
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