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Thursday, 19 September 2019
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Raw materials & technologies, Raw materials, Coatings additives

Fruit peel could act as additive for silver nanoparticles

Monday, 25 June 2012

Indian scientists are using skin of pomegranates as a reducing agent for the production of silver nanoparticles.

Skin of pomegranates could be used as biobased reducing agent for silver nanoparticles

Source: FikMik/Fotolia

Skin of pomegranates could be used as biobased reducing agent for silver nanoparticles

Source: FikMik/Fotolia

According to new research, discarded fruit peel, in the case of pomegranates, could be put to good use in the burgeoning field of nanotechnology. Botanist Naheed Ahmad of Patna University and physicist colleague Seema Sharma of AN College, also in Patna, India, are trying to exploit the skin of pomegranates as a reducing agent for making silver nanoparticles.

The fruit is native in northern India and has been cultivated and naturalised over the whole Mediterranean region since ancient times. The fruit extract is a rich source of highly potent antioxidants.

The scientists say their approach to these widely researched and technologically invaluable nanoparticles represents a more environmentally benign method than the use of "chemical" reducing agents and industrial solvents. The process also precludes the need to heat the reaction mixture as it proceeds at ambient temperature.

The team suspects that biological co-factors present in the pomegranate biomass act as substitutes for more conventional chemical reagents in nanoparticle formation from the silver nitrate starting material. They used UV-Vis spectroscopy, transmission electron microscopy, selected area electron diffraction, X-ray diffraction (XRD) and Fourier-Transform infrared spectroscopy to analyze the nanoparticles formed by the reaction. The particles generated are about 5 nanometers in diameter.

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