Simultaneous electrochemical detection of Cd (II) and Pb (II) based on L-cysteine functionalized gold nanoparticles/metal-organic frameworks-graphene oxide nanocomposites

Wang, Birui; Chen, Jin; Tong, Ho‐Wang; Huang, Yumeng; Liu, Bo; Yang, Xiaolan; Su, Zhaohong; Tu, Xinman

doi:10.1016/j.jelechem.2023.117573

Cited by 12 publications

(2 citation statements)

References 41 publications

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“…Electrochemical detection has gained significant attention in recent years due to its high sensitivity, selectivity, affordability, rapid response time, and simplicity when compared to other methods [8,9]. Electrochemical-based sensors have been extensively employed for the detection of environmental pollutants such as heavy metals (e.g., arsenic, cadmium, mercury, lead, and chromium) [10][11][12][13][14][15] as well as organic pollutants, including toxins, pesticides, antibiotics, phenolics, etc. [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Polypyrrole/α-Fe2O3 Hybrids for Enhanced Electrochemical Sensing Performance towards Uric Acid

Wang,

Liu,

Song

et al. 2024

Coatings

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Uric acid, a metabolite formed by the oxidation of purines in the human body, plays a crucial role in disease development when its metabolism is altered. Various techniques have been employed for uric acid analysis, with electrochemical sensing emerging as a sensitive, selective, affordable, rapid, and simple approach. In this study, we developed a polymer-based sensor (PPy/α-Fe2O3) for the accurate determination of uric acid levels. The PPy/α-Fe2O3 hybrids were synthesized using an uncomplicated in situ growth technique. Characterization of the samples was performed using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), X-ray powder diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The electrochemical sensing performance towards uric acid was evaluated through cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The obtained results demonstrated that the sensor exhibited excellent sensitivity towards uric acid detection within a wide range of 5–200 μM with a limit of detection (LOD) as low as 1.349 μM. Furthermore, this work elucidated the underlying sensing mechanism and highlighted the pivotal role played by PPy/α-Fe2O3 hybrids in enabling efficient uric acid sensing applications using electrochemical sensors.

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Section: Introductionmentioning

confidence: 99%

Polypyrrole/α-Fe2O3 Hybrids for Enhanced Electrochemical Sensing Performance towards Uric Acid

Wang,

Liu,

Song

et al. 2024

Coatings

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“…13 For example, electrochemical analysis can present a simpler apparatus and adequate analytical performance if compared with atomic absorption spectrometry. 14 Additionally, the analysis is performed on portable equipment, which allows the on-site monitoring of Cd(II) and Pb(II) in water samples. 15 The voltammetric determination of Cd(II) and Pb(II) was commonly performed by mercury electrodes.…”

Section: Introductionmentioning

confidence: 99%

Core–Shell Chitosan Cobalt Ferrite Nanoparticles for Ultrasensitive Simultaneous Voltammetric Determination of Pb(II) and Cd(II)

Neto,

Costa,

Morawski

et al. 2024

ACS Appl. Nano Mater.

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In water samples from industrial regions, the presence of highly toxic and nonbiodegradable heavy metal ions (HMI) poses a significant threat to environmental quality. While analytical methods based on mercury electrodes are widely recognized for their high performance in the sensitive and selective quantification of various metal contaminants, the development of environmentally friendly strategies for the voltammetric determination of HMI remains a formidable challenge. In this study, we propose a material utilizing small-size chitosan (CTS) cobalt ferrite core–shell nanoparticles (CoFe2O4@CTS) as an electrode modifier for the simultaneous voltammetric determination of Pb(II) and Cd(II). The magnetic nanoparticles were synthesized using the solvothermal method and characterized using various techniques to explore their crystalline structure, magnetic properties, and chemical composition. The resulting electrochemical sensor, CoFe2O4@CTS/GCE, was generated through a one-step modification of a glassy carbon electrode (GCE). Utilizing differential pulse adsorptive stripping voltammetry (DPAdSV), our proposed sensor exhibited high sensitivity, with low limits of detection (LOD) values of 0.04 and 0.31 μg L–1 (E d = −1.0 V; t d = 90 s) for lead and cadmium, respectively. The exceptional sensitivity observed is indicative of interactions between HMI and CTS amine groups, leading to the effective preconcentration of the analytes. Furthermore, our sensor demonstrated excellent selectivity with an interference response below 8.93% for Pb(II) and 20% for Cd(II). Accuracy was evaluated using SRM 1643e (NIST). The application of green analytical chemistry (GAC) metrics resulted in a score of 0.91, highlighting the environmentally conscious aspects of our methodology.

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Facile one-pot synthesis of triethanolamine-functionalized AuNPs-GO-UiO-66-NH2 nanocomposites for simultaneous electrochemical detection of Cd(II), Pb(II), and Cu(II)

Tu,

Li,

Liu

et al. 2023

J Solid State Electrochem

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Simultaneous electrochemical detection of Cd (II) and Pb (II) based on L-cysteine functionalized gold nanoparticles/metal-organic frameworks-graphene oxide nanocomposites

Cited by 12 publications

References 41 publications

Polypyrrole/α-Fe2O3 Hybrids for Enhanced Electrochemical Sensing Performance towards Uric Acid

Polypyrrole/α-Fe2O3 Hybrids for Enhanced Electrochemical Sensing Performance towards Uric Acid

Core–Shell Chitosan Cobalt Ferrite Nanoparticles for Ultrasensitive Simultaneous Voltammetric Determination of Pb(II) and Cd(II)

Facile one-pot synthesis of triethanolamine-functionalized AuNPs-GO-UiO-66-NH2 nanocomposites for simultaneous electrochemical detection of Cd(II), Pb(II), and Cu(II)

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