Chemical processes to sustainable and eco- friendly techniques. Of these, green synthesis, also known as biosynthesis has been found to be a viable approach that exploits biological systems, and their biomolecular constituents, to create nanoparticles. It is not only the most environmentally friendly, but also presents unique operational capabilities such as cost-effectiveness, energy efficiency and just one-pot reactions at ambient temperatures. Green synthesis offers a safer and more eco-friendly solution by not requiring the utilization of dangerous reagents and the special conditions of the conventional processes. This review will give a critical summary of the principles of the green synthesis, and more specifically its mechanistic nature in biological and chemical pathways. They provide critical comparisons with the traditional methods and give an assessment of the sophisticated characterization tools that are needed to authenticate the structural, morphological, and functional characteristics of synthesized nanomaterials. Furthermore, some uses of green-synthesized nanoparticles are examined in the biomedicine, environmental cleanup, farming, and technologies in the energy sector. Existing issues such as scalability, reproducibility and mechanistic ambiguities are critically examined and possible ways of overcoming these challenges are presented. This body of evidence supports the case of green synthesis as not only an environmentally friendly alternative, but also as an extremely versatile and technologically better platform that can produce functionally improved nanomaterials to be used in industrial and biomedical innovations in the future. This paper discusses the synthesis of copper oxide nanoparticles (CuO NPs) with Carica papaya leaf extract as the reducing and stabilizing agents. Using the leaves in the precipitation technique, rapid production of CuO NPs was easily biosynthesized and pollution-free without any environmental harmful effects. X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM) were used to determine the properties of the nanoparticles. The size of the particles measured using the Scherer equation showed that they were between 50- 60 nm in samples prepared through chemical precipitation. The manufactured CuO NPs had the right characteristics to be used in biomedical uses, which points to the possibility of green synthesis offering sustainable nanotechnology.
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DOI: https://doi.org/10.63328/IJRDES-V7CIP8
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