Abstract

GREEN PREPARATION OF COPPER NANOPARTICLES FROM PLANT SEEDS EXTRACT: A REVIEW

M. Maheshwari*, S. Selvakumar, K. Selva, V. Leslie, S. Dharmarajsanthosam

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Abstract

One of the biggest health and economic issues facing the world today is heavy metal contamination of waterways. As a result, the environmentally friendly production of Cu2+ nanoparticles from avocado seed extract may offer a simple, safe, and least expensive way to adsorb these heavy metals. In this work, several quantities (5%, 6%, 8%, and 10%) of Nigella sativa seed extracts were used to create the copper nanoparticles. The easy synthesis of environmentally safe copper nanoparticles (CuNPs) utilizing Cuminum cyminum (Cumin) seed extract is reported in this study. In a single step of green synthesis, the metal ions can be reduced to nanoparticles using biomolecules found in the seed extracts. Using aqueous wheat seed extract, a simple innovative green technology is provided for the manufacture of very stable and well-dispersed copper oxide nanoparticles. The electron-rich biomolecules produced from wheat seed extract served as a capping/stabilizing and reducing agent under ideal reaction circumstances. The production of copper oxide nanoparticles was verified by the UV-visible absorption peak at 300 nm. The green chemistry technique is an easy, non-toxic, economical, ecologically beneficial, and biological process. The seed extract of Phoenix dactylifera has been applied as a capping and reducing agent in the environmentally friendly synthesis of copper oxide nanoparticles. This strategy had anticipated interest in studying natural waste products to boost the use of complementary and alternative medicine for infectious disorders. This study found that date fruit (Phoenix dactylifera L.) seeds may be used to produce biogenic copper oxide nanoparticles in an environmentally friendly and sustainable manner. Research in the fields of industry and health has focused on the cost-effective, non-toxic, and environmentally acceptable green synthesis of copper nanoparticles, or Cu NPs. A distinct class of multiphase, nanobiotechnology has emerged as a field of study in modern science and a paradigm change in the study of materials. The discovery of new natural resources for the biological production of metal nanoparticles is one of the two main issues facing the field of nanomaterial synthesis. The other issue is the lack of knowledge regarding the chemical composition of the bio-source needed for synthesis and the chemical process or mechanism behind the production of metal nanoparticles. Here, a natural extract from Tribulus terrestris seeds was used to create template-free, green synthesized copper oxide nanoparticles without the need for an isolation procedure. Wild birds prefer to eat black oil sunflower seeds (Helianthus annuus L.) because of their thin hulls and high-calorie content. However, in hot, humid regions, the oils can rapidly deteriorate and waste away. Our theory is that we can use sunflower seeds as a reducing agent to create copper nanoparticles (CuNPs). A copper sulfate solution, a black oil sunflower seed extract, and starch as a capping agent were the ingredients in the procedure. Visual inspection revealed that CuNPs were formed when the color changed from bright blue to light brown and reddish-brown precipitates formed when heated. When Cuprotesmo test sheets were used to test a portion of the precipitate, they became pink, indicating the presence of metallic copper. We created the copper nanoparticles for this study utilizing a green, environmentally acceptable manner. This study describes an easier and more environmentally friendly method for the production of copper nanoparticles utilizing seed extract from Persea americana. Copper nanoparticles were made from an aqueous extract of the shade-dried portions of Asparagus aethiopicus L. UV-visible spectroscopy was used to evaluate the Cu NP production process. The range of 310–360 nm had the maximum absorbance, indicating the production of Cu NPs. Compared to alternative synthesis methods, the biosynthesis of nanoparticles using medicinal plants has several advantages. Many bioactive substances found in plants can contribute to the reduction and capping of nanoparticles. The advantages of plant-mediated synthesis are low cost, environmental friendliness, and long-term availability. The present study uses the medicinally valued herb Silybum marianum, which has a high silymarin concentration, as a stabilizing and reducing agent throughout the nanoparticle creation process. In this work, chia seed extract was used to create copper oxide nanoparticles (CuO NPs) in an easy, quick, and environmentally responsible way. Because of their many benefits and applications in industry, research, and health, copper nanoparticles are becoming more and more popular. Copper nanoparticles are green synthesized using an extract from the seeds of Foeniculum vulgare. The objective of this work is to use coffee arabica extract and straightforward techniques to create copper nanoparticles (CuNPs) at room temperature. Green synthesis was used to create CuO nanoparticles using an extract from the seeds of the Calotropis procera plant in an aqueous media. Ammonia was used as a stabilizing agent and copper acetate monohydrate as a precursor in the chemical reduction procedure to create CuO nanoparticles.

Keywords: Adsorption process, Facile synthesis, Biosynthesis, seeds extract.