Mesoporous MnFe2O4 nanocrystal clusters for electrochemistry detection of lead by stripping voltammetry

Han, Xiaobin; Zhou, Shaofeng; Fan, Honglei; Zhang, Qiaoxin; Liu, Yaqing

doi:10.1016/j.jelechem.2015.07.054

Cited by 51 publications

(15 citation statements)

References 36 publications

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“…It is again evident that the hybrid materials showed significantly higher sensitivity compared to the pristine clay modified CPEs. Similar high sensitivity (19.9 µA/µM) was obtained for the lead(II) detection using the MnFe 2 O 4 NC (nanocrystalline cluster) modified GCE [18].…”

Section: Electroanalysis Performance Of Modified Cpes For Lead(ii) Desupporting

confidence: 73%

“…It also implied that the hybrid materials introduced with the carbon paste electrodes eventually enhanced the electron transfer kinetics with an enhanced surface sensitivity [17,31]. Therefore, the CPE modified with hybrid materials showed an enhanced sensitivity of detection and could be useful materials in the development of electrochemical sensors [18].…”

Section: Electrochemical Response Of Modified Cpementioning

confidence: 97%

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Efficient Use of Porous Hybrid Materials in a Selective Detection of Lead(II) from Aqueous Solutions: An Electrochemical Study

Zirlianngura

Tiwari

et al. 2017

Metals

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Due to health and pollution concerns of aquatic environments related to the presence of heavy metal toxic ions, the necessity of developing devices able to detect and to monitor such kinds of species has recently gained importance. Carbon paste electrodes (CPEs) a starting approach to obtain new ion-selective devices by supporting materials like bentonite and/or clay; which become sensitive to lead(II) when they are suitably modified by chemical treatments to obtain different hybrid materials. In this work, two natural clays and three different hybrid materials were produced and then were characterized by X-ray diffraction, scanning electron microscopy, and Fourier transform infrared spectroscopy to assess their physico-chemical properties. After this stage, the electrochemical characterization of the modified CPEs using hybrid materials was performed by cyclic voltammetry, using the standard Fe(CN) 6 4− /Fe(CN) 6 3− redox couple. Subsequently, this study performed electrochemical experiments on lead(II) containing solutions, to test the ability of the examined CPEs to detect this toxic ion present in very low amounts. Lead(II) exhibited a reversible two electron oxidation/reduction behaviour in the cyclic voltammetry analyses and a reasonably good linear behaviour of the current associated with the oxidation peak as a function of its concentration (5.0-40.0 µg/L). The detection limit was found to vary in the range of 3-5 µg/L for the different modified CPEs. The presence of several co-existing ions showed that an interference variation had occurred. These results, therefore, show a restriction of the selectivity of the electrode up to a certain extent in the lead(II) detection. Finally, tap water with spiked lead(II) was analyzed to verify the suitability of the electrodes in the low level detection of lead(II) from real matrix samples.

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Section: Electroanalysis Performance Of Modified Cpes For Lead(ii) Desupporting

confidence: 73%

Section: Electrochemical Response Of Modified Cpementioning

confidence: 97%

Efficient Use of Porous Hybrid Materials in a Selective Detection of Lead(II) from Aqueous Solutions: An Electrochemical Study

Zirlianngura

Tiwari

et al. 2017

Metals

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“…2 excellent magnetic property, high electronic conductivity, high thermal stability, and effective catalytic activity [1][2]. As a new form of carbon material, Carbon nanotubes (CNT) are among the best candidates for the preparation of electrocatalytic nanocomposite materials [3].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Highly selective differential pulse voltammetric determination of warfarin in pharmaceutical and biological samples using MnFe2O4/MWCNT modified carbon paste electrode

Taei

Hasanpour

Basiri

et al. 2016

Microchemical Journal

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“…Using SWASV, a sensitivity of 19.9 μA.μM −1 and LOD of 0.054 μM were obtained under optimized conditions, while the response to Cd 2+ , Hg 2+ , Cu 2+ and Zn 2+ was poor. The modified electrode was successfully used to detect a spiked lead concentration in river water [120].…”

Section: Iron Oxide Nanoparticlesmentioning

confidence: 99%

Metal and metal oxide nanoparticles in the voltammetric detection of heavy metals: A review

Sawan

Maalouf

Errachid

et al. 2020

TrAC Trends in Analytical Chemistry

166

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Most heavy metal ions are known to be toxic and carcinogenic when present in high amounts. Thus, rapid and reliable on-site detection of these ions is crucial. Voltammetry is a highly sensitive electrochemical method that has been widely used for heavy metal detection offering the advantages of sensitivity and rapidity. On the other hand, nanoparticles offer the advantages of high surface area and high selectivity. Thus, this review aims to highlight the application of metallic and metallic oxide nanoparticles for the voltammetric detection of heavy metals. The nanoparticles used were either applied solely on the electrode or as modifiers with various materials. In all cases, the synthesized devices showed an enhanced analytical performance, such that the limits of detection were lowered and the sensitivities were increased as compared to voltammetric systems not using nanoparticles. Moreover, the applicability of some of these systems was investigated in real samples.

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Mesoporous MnFe2O4 nanocrystal clusters for electrochemistry detection of lead by stripping voltammetry

Cited by 51 publications

References 36 publications

Efficient Use of Porous Hybrid Materials in a Selective Detection of Lead(II) from Aqueous Solutions: An Electrochemical Study

Efficient Use of Porous Hybrid Materials in a Selective Detection of Lead(II) from Aqueous Solutions: An Electrochemical Study

Highly selective differential pulse voltammetric determination of warfarin in pharmaceutical and biological samples using MnFe2O4/MWCNT modified carbon paste electrode

Metal and metal oxide nanoparticles in the voltammetric detection of heavy metals: A review

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