Abstract
In this research, the ability of the leaf extract of Justicia adhatoda is observed as a unique reducing agent for bioconversion of copper ions to copper oxide nanoparticles (CuO NPs). CuO NPs have significant antibacterial activity and nontoxicity toward humans. The formation of nanoparticles is confirmed by the color change of the solution from light blue to brown because of the trouble of surface plasmon resonance (SPR). The optical study showed an SPR peak at 280 nm. The interaction of CuO NPs excipients with the biomolecules is studied using x-ray diffraction and particle size is also calculated. Field emission scanning electron microscopy has been applied to recognize the size, shape, and morphology of nanoparticles, which is incorporated in cotton. Fourier transform infrared spectroscopy showed that the reduction of CuO NPs was due to the biomolecules present in the leaf extract, which acted as reducing, in addition to capping, agents. The synthesized CuO NPs-coated cotton were tested for antibacterial activity to both gram-positive and gram-negative bacterial strains, which are applicable for the fabrication of an antibacterial cotton textile.
Highlights
Nanotechnology is one of the influential technologies and it is being applied in overall modern life because they have a tiny size in the nanoregime (100 nm) and large surface zone
We have reported the green synthesis of CuO NPs using Justicia adhatoda (Basak) leaf extract and Fig. 1 shows the leaf plant
The intensity of an surface plasmon resonance (SPR) peak enlarged in copper solution, which indicated the formation of CuO NPs from copper ions
Summary
Nanotechnology is one of the influential technologies and it is being applied in overall modern life because they have a tiny size in the nanoregime (100 nm) and large surface zone. Nanoparticles can be synthesized using different methods, such as physical, chemical, and biological methods. Physical and chemical methods require high vacuum, high energy conversion, and toxic chemicals.. Physical and chemical methods require high vacuum, high energy conversion, and toxic chemicals.2 In this approach, the micro-organism, plants, and animal sources can be used as a reducing agent.. Chemical synthesization of NPs has an environmental impact and is toxic; on the other hand, a biological green methodology is more significant.. Biological synthesis is one of the bottom-up approaches for the synthesis of metal nanoparticles. This type of green approach is eco-friendly, cost-effective, and non-toxic, and synthesis can be performed by the bio-reduction process using the extracts of medicinal plants, bacteria, fungi, etc.. This type of green approach is eco-friendly, cost-effective, and non-toxic, and synthesis can be performed by the bio-reduction process using the extracts of medicinal plants, bacteria, fungi, etc. Among various metal nanoparticles, the copper oxide nanoparticle is chosen because of their unique optical, catalytic, electrical, biomedical, and antibacterial applications.
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