Dataset Information

Removal of Au³⁺ and Ag⁺ from aqueous media with magnetic nanoparticles functionalized with squaramide derivatives.

ABSTRACT: New magnetic hybrid nanoparticles of Fe₃O₄ coated with organosulfur-squaramide compounds are prepared. The modified-nanoparticles show a good coordination for Ag⁺ and Hg²⁺ cations in water, and present a high affinity for Au³⁺ ions. The behaviour of the squaramide-coated nanoparticles differs significantly from that previously reported for nanoparticles used as Au³⁺ scavengers. In the presence of organosulfur-squaramide, the Au³⁺ salt is reduced to gold nanoparticles that are deposited upon Fe₃O₄ nanoparticles. For the first time, the coordination capacity of the carbonyl squaramide groups with the gold cation, based on purely electrostatic cation-dipole interactions, is proved.

SUBMITTER: Duel P

PROVIDER: S-EPMC9088706 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Removal of Au3+ and Ag+ from aqueous media with magnetic nanoparticles functionalized with squaramide derivatives.

Duel Paulino P Gutiérrez M Susana MS Rodríguez Paulina P León Alberto A López Kenia A KA Morey Jeroni J Piña M Nieves MN

RSC advances 20181023 63

New magnetic hybrid nanoparticles of Fe3O4 coated with organosulfur-squaramide compounds are prepared. The modified-nanoparticles show a good coordination for Ag+ and Hg2+ cations in water, and present a high affinity for Au3+ ions. The behaviour of the squaramide-coated nanoparticles differs significantly from that previously reported for nanoparticles used as Au3+ scavengers. In the presence of organosulfur-squaramide, the Au<su ...[more]

PMID: 35558446

Similar Datasets

Project description:Magnetic nanoparticles owing to their superparamagnetic behaviour and specific reactive sites are facilitated to regenerate and reuse. Our present study determines the cointegration of the plant extracts of Cynodon dactylon and Muraya koenigii with the magnetic nanoparticle coated with silica layer and surface engineered with a specific amine group. The cointegrated magnetic nano adsorbent is characterized for its analytical feature and batch studies are performed to remove zinc (Zn2+) copper (Cu2+) metal ions. Fourier transform infrared spectroscopy reveals the presence of functional entities such as NH2, Si-O-Si, C=C. The size of the cointegrated nano adsorbent (12-30 nm) was confirmed by field emission scanning electron microscopy whereas, a high-resolution transmission electron microscope affirms the nanosize of the particle constituted around 20 nm. Energy dispersive x-ray analysis confirms the presence of elements like Fe, N, Si and was confirmed by X-ray diffraction analysis and vibrating sample magnetometer affirms the superparamagnetic nature with the high magnetic saturation value (Ms - 30 emug-1). The cointegrated nano adsorbent reveals the maximum adsorption capacity of Zn2+ as 78.24 mg.g-1 and Cu2+ as 81.76 mg.g-1 of the adsorbent under the optimized conditions of contact time 45 min, pH 6.0 and temperature 35 °C. Kinetics such as pseudo-first-order, pseudo-second-order, Elovich, intraparticle diffusion and isotherm studies like Langmuir, Freundlich, Dubinin-Radushkevich and Temkin were performed to understand the mechanism of interaction between the nanoadsorbent and metal ions. The reaction system follows the pseudo-second-order kinetics and Langmuir isotherm model for both the Cu2+ and Zn2+ metal ions. To determine the reusing capacity of the cointegrated nanoadsorbent, the adsorption efficiency was studied for continuous twelve cycles with 80% recovery after subsequent acid treatment.Supplementary informationThe online version contains supplementary material available at 10.1007/s40201-021-00696-9.

Dataset Information

Removal of Au³⁺ and Ag⁺ from aqueous media with magnetic nanoparticles functionalized with squaramide derivatives.

Publications

Removal of Au<sup>3+</sup> and Ag<sup>+</sup> from aqueous media with magnetic nanoparticles functionalized with squaramide derivatives.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets