Abstract
The nanomaterials especially be made of iron, are tapering off the environmental pollution in a sufficiently great way which is worthy for attention. Green synthesis of iron nanoparticles through the extraction of the natural products or wastes has been developed in a way that is more sustainable than the chemical routes associated with several limitations. The mulberry leaves, which are easy available in nature, were chosen for plant-mediated green synthesis of zero-valent iron nanoparticles (nZVI). The characterization of the synthesized nanoparticles was performed with the used of dynamic light scattering (DLS), scanning electron microscope (SEM), and Fourier Transform Infrared Spectroscopy (FTIR). The polyphenols content of the mulberry leaf can be used to synthesize the iron nanoparticles. The iron nanoparticles can be used as the Fenton-like catalyst to enhance the efficiency of dyes degradation. Meanwhile, the iron nanoparticles can be removed by its magnetic properties after the degradation of pollutants which can be reused in subsequent environmental remediation. The efficiency of dyes degradation by the synthesized iron nanoparticles, was investigated by UV-visible spectroscopy (UV-vis). The cationic and anionic model dyes were used to investigate the ability of the synthesized iron nanoparticles in degradation of dye molecules. Methylene Blue was used as the model for cationic dye whereas Methyl Orange was chosen as anionic model dye. The percentage removal of respective dyes was investigated at the different period of time. The work investigated the magnetic and catalytic bi-functionalities of the synthesized iron nanoparticles.
Highlights
In this day and age, most of the metal and metal oxides are produced by the physical and chemical methods in a way that covers a large area of applications
The synthesized nZVI was used to degrade the dye in the experiment in order to demonstrate the engineering application
The catalytic characteristic was demonstrated as the synthesized nZVI can be acted as an agent of dye remediation assisting in environmental remediation
Summary
In this day and age, most of the metal and metal oxides are produced by the physical and chemical methods in a way that covers a large area of applications. The production of metal and metal oxide nanoparticles on a large scale using machinery can be composed of reducing agents that are very reactive but very unpleasant to the environment, plant and animal life [12]. Iron nanoparticles, can be used as the catalyst over a large range of heterogeneous catalytic processes as well as the AOPs, to oxidize. The combination of a solid iron based catalyst and the hydrogen peroxides, which is known as the heterogeneous Fenton reaction becomes great interest among all other AOPs for soils contaminated with organic compounds and the wastewater treatment [19]. Throughout this study, the nZVI were synthesized as heterogeneous Fenton-like catalyst with the used of mulberry leaves by the green approach. Two different dyes which are cationic dye, Methylene Blue (MB) and anionic dyes, Methyl Orange (MO) were chosen for this study, which are most commonly used for the dyeing process in the industrial especially the textile industrials [4]
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