Enhanced anion sensing by γ-irradiated polyphenol capped iron oxide nanoparticles

Abstract

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.

Greener synthesis of nanostructured iron oxide for medical and sustainable agro-environmental benefits

“…The biological production of metal-based nanostructures is known as a green technology from the manipulation of various agro-wastes because it is biocompatible, non-toxic, and does not include any harmful substances ( Lakshmnarayanan et al, 2021 ; Periakaruppan et al, 2021 ). The green production of nanostructured iron oxide uses agro-wastes without including any toxic chemical reagents, so this method can be said to be more appealing than physical and chemical methods ( Prodan et al, 2013 ; Ansari et al, 2016 ). This type of synthesis has received great attention and has been actively explored recently.…”

Effect of γ-irradiation on ruthenium-morin nanocomposite for trace detection of Ce(IV), Ce(III) and Dy(III)

“…1 mM RuCl 3 solution was gradually added (in 0.01 mL portions) into the morin containing solutions for spectral analysis. Estimation of unreacted morin was carried out by Folin-Ciocalteu method [35] and a distinct peak was obtained at 770 nm. To estimate ruthenium(III), a mixture of 1,10phenanthroline and hydroxylammonium chloride was used giving a characteristic peak at 448 nm for the formation of tris-(1,10-phenanthroline) ruthenium(II) complex.…”

“…The total amount of unreacted polyphenol in Set A and Set B was estimated using a well known Folin-Ciocalteu method taking gallic acid as standard [35][36][37][38]. According to this method, solutions of gallic acid of varying concentrations (0.01-0.2 mM), 2% sodium carbonate (Na 2 CO 3 ) and 50% Folin-Ciocalteu (FC) reagent were prepared.…”