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A novel method was designed for the synthesis of polyphenol capped amorphous iron oxide nanoparticles (ION) using an agro waste (peanut skin). The synthesized nanoparticles were characterized by absorption spectroscopy, TEM, SEM, IR, Raman and XRD. An increased rate of formation of the nanoparticles is observed upon low dose gamma irradiation. ION shows specific spectral features with perchlorate anion even in presence of other anions selected for the anion sensing study. The nanoparticles formed in presence of irradiation was found even more sensitive to lower concentration of perchlorate owing to its finely dispersed nature and increased surface area.

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The present work describes the design of a Ag-morin nanocomposite and its subsequent incorporation in calcium alginate gels which have the unique property to uptake and release sodium ions. The nanocomposite reported here is the first of its kind and is capable of modifying the calcium alginate gels both physically and chemically. The corrugated surface morphology of calcium alginate becomes modified and becomes smoother upon incorporation of the nanocomposite. Rheological studies reveal an increased viscoelastic nature upon modification of calcium alginate gels which are developing as wound dressing materials. The modified gel will be supposedly a better dressing material as it can also handle saline solution which in turn is a prerequisite for wound healing treatment.

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