Sensitive determination of hydroxylamine by using modified electrode by La2O3–Co3O4 nanocomposite and ionic liquid

Nazari, Monireh; Asadollahzadeh, Hamideh; Shahidi, Minoo; Rastakhiz, Nahid; Mohammadi, Sayed Zia

doi:10.1016/j.matchemphys.2022.126209

Cited by 10 publications

(4 citation statements)

References 44 publications

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“…The chronoamperometric method was utilized to estimate the diffusion coefficient (D) value for the voltammetric oxidation of DIC on the M-CHS NC/CPE surface using the Cottrell equation [ 45 ] (Equation (6)).

where A represents the geometric surface area of M-CHS NC/CPE; C is the DIC concentration (mM); and t symbolizes the time elapsed (s).…”

Section: Resultsmentioning

confidence: 99%

A Novel Electrochemical Sensor Based on an Environmentally Friendly Synthesis of Magnetic Chitosan Nanocomposite Carbon Paste Electrode for the Determination of Diclofenac to Control Inflammation

et al. 2023

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A simple and eco-friendly electrochemical sensor for the anti-inflammatory diclofenac (DIC) was developed in a chitosan nanocomposite carbon paste electrode (M-Chs NC/CPE). The M-Chs NC/CPE was characterized with FTIR, XRD, SEM, and TEM for the size, surface area, and morphology. The produced electrode showed a high electrocatalytic activity to use the DIC in 0.1 M of the BR buffer (pH 3.0). The effect of scanning speed and pH on the DIC oxidation peak suggests that the DIC electrode process has a typical diffusion characteristic with two electrons and two protons. Furthermore, the peak current linearly proportional to the DIC concentration ranged from 0.025 M to 4.0 M with the correlation coefficient (r2). The sensitivity, limit of detection (LOD; 3σ), and the limit of quantification (LOQ; 10σ) were 0.993, 9.6 µA/µM cm2, 0.007 µM, and 0.024 µM, respectively. In the end, the proposed sensor enables the reliable and sensitive detection of DIC in biological and pharmaceutical samples.

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where A represents the geometric surface area of M-CHS NC/CPE; C is the DIC concentration (mM); and t symbolizes the time elapsed (s).…”

Section: Resultsmentioning

confidence: 99%

A Novel Electrochemical Sensor Based on an Environmentally Friendly Synthesis of Magnetic Chitosan Nanocomposite Carbon Paste Electrode for the Determination of Diclofenac to Control Inflammation

et al. 2023

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“…The chronoamperometric method was used to calculate the diffusion coefficient (D) values for the electrochemical oxidation of OFL and CIP at Ca 2 CuO 3 NS/CPE surface by applying the Cottrell equation [ 35 ] Eq. ( 2 ) where A is the geometric surface area of the fabricated electrode (0.12 cm 2 ), C symbolizes the analyte concentration (mM), and t represents the time elapsed (s).…”

Section: Resultsmentioning

confidence: 99%

Fabrication of an electrochemical sensor based on eggshell waste recycling for the voltammetric simultaneous detection of the antibiotics ofloxacin and ciprofloxacin

Khodari,

Assaf,

Shamroukh

et al. 2023

BMC Chemistry

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In this work, an accurate, highly sensitive, and economical electrochemical sensor based on a carbon paste electrode modified by Ca2CuO3 nanostructure (Ca2CuO3 NS) was constructed using Eggshell waste recycling as a cheap source of calcium. The Ca2CuO3 NS was analyzed using FTIR, SEM, and XRD measurements. The synthesized nanomaterials utilized for the first time to enhance the electrocatalytic efficiency of carbon paste electrode (CPE) toward fluoroquinolones antibiotics ofloxacin (OFL) and ciprofloxacin (CIP), The drugs used to treat pneumonia caused by COVID-19. The synthesized Ca2CuO3 NS dramatically enhanced the anodic peak response of CPE toward both drugs compared to the unmodified one and other modified electrodes. The simultaneous detection of the two antibiotics was performed in the linear range of 0.09–1.0 μM for OFL and 0.05–0.8 μM for CIP with the LOD of 0.027 μM and 0.012 μM, respectively. The suggested method was applied successfully to determine OFL and CIP in real samples.

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“…Finally, the modified electrode was successfully used to quantify the level of hydroxylamine in samples of well, tap, and river water. 47…”

Section: Carbon Paste Electrode Based Sensorsmentioning

confidence: 99%

“…48 Using a CPE modied with La 2 O 3 /Co 3 O 4 nanocomposite and ionic liquid (La 2 O 3 /Co 3 O 4 /IL/CPE), an effective, quick, and sensitive technique for the detection of hydroxylamine has been devised. 47 The sensor demonstrated good electrocatalytic activity and response capability for hydroxylamine where the authors showed that the electrochemical oxidation of hydroxylamine at the surface of La 2 O 3 /Co 3 O 4 /IL/CPE was 4.8 times greater than the signal at the surface of La 2 O 3 /Co 3 O 4 /CPE; the authors stating that the "IL is a good mediator". 47 Furthermore, the peak potential of hydroxylamine at the LaCo/IL/CPE surface was +700 mV (vs. Ag/AgCl), whereas hydroxylamine was not oxidized at the bare CPE until the potential reached +1200 mV (vs. Ag/AgCl); see Fig.…”

Section: Carbon Paste Electrode Based Sensorsmentioning

confidence: 99%

Electroanalytical overview: the sensing of hydroxylamine

2023

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Sensitive determination of hydroxylamine by using modified electrode by La2O3–Co3O4 nanocomposite and ionic liquid

Cited by 10 publications

References 44 publications

A Novel Electrochemical Sensor Based on an Environmentally Friendly Synthesis of Magnetic Chitosan Nanocomposite Carbon Paste Electrode for the Determination of Diclofenac to Control Inflammation

A Novel Electrochemical Sensor Based on an Environmentally Friendly Synthesis of Magnetic Chitosan Nanocomposite Carbon Paste Electrode for the Determination of Diclofenac to Control Inflammation

Fabrication of an electrochemical sensor based on eggshell waste recycling for the voltammetric simultaneous detection of the antibiotics ofloxacin and ciprofloxacin

Electroanalytical overview: the sensing of hydroxylamine

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