Heavy-metal detectors based on modified ferrite nanoparticles

Klekotka, Urszula; Wińska, Ewelina; Zambrzycka-Szelewa, Elżbieta; Satuła, D.; Kalska-Szostko, B.

doi:10.3762/bjnano.9.69

Cited by 17 publications

(7 citation statements)

References 30 publications

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“…+ Ag NPs, absorption peaks at 2924, 2855 and 2448, 2092 cm −1 were disappeared in CuSO 4 +AgNPs and new peaks at 2956 shifted into 2969, 1737 shifted into 1738 (Figure 6). Similar study of FeO nanoparticles observation con rms a successful modi cation of the surface of the nanoparticles with Cd and Cu ions (Klekotka et al 2018). There were signi cant changes on the FT-IR spectrum of Ag NPs after interaction with FeSO 4 ions.…”

Section: Resultssupporting

confidence: 69%

Spectroscopic sensing of eight metal ions in aqueous solutions using silver nanoparticles

Selvaraj

Soniya

Raguraman

et al. 2022

Preprint

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Anthropogenic releases from different outlets of industry, municipal sewage and the road traffic can give rise to higher concentrations of the heavy metals in the food commodities which imposes a threat to human health and environment. A simple silver nanoparticle (Ag NPs) used for the sensing of heavy metal ions, Cd2+, Cu2+, Fe2+, Hg2+, Mn2+, Ni2+, Pb2+ and Zn2+ in aqueous solution is described by qualitative and quantitatively using spectroscopic tool. FE-SEM and TEM images confirmed that the particles are spherical in shape with an average diameter of 23.4 nm. In presence of heavy metal ions with Ag NPs, a new peak at around 925, 898, 643, 665, 688, and 838 nm of Cd2+, Cu2+, Fe2+, Hg2+, Mn2+ and Zn2+ appeared in addition to the peak found at 410 nm of Ag NPs. Further, the addition of Ni2+ and Pb2+ metal ion solution with Ag NPs increased the SPR band from 410 nm to 436 and 462 nm respectively. Citrate functionalized Ag NPs are aggregated in solution in the presence of divalent metal ions by an ions-template chelating process and easily measurable change in the UV-vis absorption spectrum of the particles. Further, studies also confirmed the interaction of Ag NPs with metal ions using FT-IR spectroscopy. The proposed method was found to be useful for simple UV-vis spectroscopic sensing of metal ions in aqueous solutions and real contaminated samples.

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Section: Resultssupporting

confidence: 69%

Spectroscopic sensing of eight metal ions in aqueous solutions using silver nanoparticles

Selvaraj

Soniya

Raguraman

et al. 2022

Preprint

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“…The presented results can be discussed and summarized in two ways. First, the good stability of nanoparticles means that they can be used with success as, for example, detectors of specific compounds or heavy metals [ 26 , 49 ] Their applications can be realized in a wide range of solutions. Due to the fact that the particles do not dissolve easily, their application possibilities increase.…”

Section: Discussionmentioning

confidence: 99%

Stability Studies of Magnetite Nanoparticles in Environmental Solutions

et al. 2021

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In the presented paper, studies of magnetite nanoparticle stability in selected environmental solutions are reported. The durability tests were performed in four types of liquids: treated and untreated wastewater, river water, and commercial milk (0.5% fat). Nanoparticles before and after deposition in the testing conditions were measured by transmission electron microscopy, X-ray diffraction, infrared spectroscopy, and Mössbauer spectroscopy. The amount of Fe atoms transferred into the solutions was estimated on the basis of flame atomic absorption spectroscopy. The analysis of the obtained results shows good stability of the tested nanoparticles in all water solutions. They do not change their structure or magnetic properties significantly, which makes them a good candidate to be used as, for example, detectors of specific compounds or heavy metals. On the other hand, studies show that particles are stable in environmental conditions for a long period of time in an unchanged form, which can cause their accumulation; therefore, they may be hazardous to living organisms.

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“…Here such phenomena is observed, what indicates the necessity of further investigations of the system with focus on interface region due to its peculiarity. Following surface functionalization allows using core modulated particles with different efficiency as external magnetic field‐mediated sensors (results not shown here) …”

Section: Introductionmentioning

confidence: 86%

Ferrite Core‐Shell Nanoparticles Synthesized by Seed‐Based Method Characterization and Potential Application

Klekotka

Piotrowska

Satuła

et al. 2018

Physica Status Solidi (a)

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This paper is dedicated to a systematic study on the selected type of core‐shell magnetic nanoparticles. Described fabrication procedure adopts the idea of seeds‐based synthesis followed by subsequent layer growth. Each layer of formed particles is obtained from complexes of M(acac)x, where M stands for 3d elements (Fe, Co, Ni, Mn) and x is equal to 2 or 3 resulting in oxide formation. Obtained core‐shell nanoparticles are structurally examined by X‐ray diffraction, infra‐red spectroscopy, and transmission electron microscopy. Magnetic properties of the proposed nanoparticles are tested by Mössbauer spectroscopy. Variable in layered manner composition allows for tuning of physicochemical properties of the investigated material. Designed on demand layer‐by‐layer growth gives the opportunity to obtain desired final properties of, for example, sensing character or selectivity of interacting spices.

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Heavy-metal detectors based on modified ferrite nanoparticles

Cited by 17 publications

References 30 publications

Spectroscopic sensing of eight metal ions in aqueous solutions using silver nanoparticles

Spectroscopic sensing of eight metal ions in aqueous solutions using silver nanoparticles

Stability Studies of Magnetite Nanoparticles in Environmental Solutions

Ferrite Core‐Shell Nanoparticles Synthesized by Seed‐Based Method Characterization and Potential Application

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