Abstract
Tetraaniline nanostructures/magnetite nanoparticles (Fe3O4 NPs) have been prepared via in situ self-assembly method using ammonium persulphate as an oxidant in the presence of p-toluene sulphonic acid as a dopant as well a soft template. The effect of the concentration and molar ratio of p-toluene sulphonic acid to aniline on the morphology and size of the nanostructures, and the crystallinity, thermal stability and magnetic properties of the nanocomposites have been studied by UV-visible spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis and vibrating sample magnetometry. The spectroscopic results indicated the interaction between the tetraaniline nanostructures and the Fe3O4 NPs. The microscopic results show that the Fe3O4 NPs were coated on tetraaniline nanostructures. The saturation magnetization values and the thermal stability of the nanocomposites were found to depend on the molar ratio of p-toluene sulphonic acid to aniline.
Highlights
Nanotechnology is one of the most effective and novel area of research in modern material science
We review the methods of making nanoparticles using different plant extracts, possible mechanism of nanoparticle synthesis, and their pharmaceutical applications, and products available in the market their clinical trial status are reviewed
This review paper summarizes the recent research advances in the field of metal nanoparticle synthesis through plant extract and critically discusses the various mechanism proposed behind it. Plants or their extracts can be effectively used in the biosynthesis of metallic nanoparticles, as a greener approach
Summary
Nanotechnology is one of the most effective and novel area of research in modern material science. The main benefit of plant-based synthesis approaches over classical chemical and physical method is more eco-friendly, cheaper, and scale-up process for the large-scale synthesis of nanoparticles other than there is no need of to use high temperature, pressure, and toxic chemicals [19]. A large number of research papers have been reported on biological synthesis of metal nanoparticles using microbes like bacteria, fungi, algae, and plants (Table 1). This is due to their reducing or antioxidant properties that are responsible for the reduction of, respectively, metal nanoparticles.
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