One-Step Electrodeposition Synthesized Aunps/Mxene/ERGO for Selectivity Nitrite Sensing

Wang, Tan; Xu, Xianbao; Li, Zhen; Li, Bingbing

doi:10.3390/nano11081892

Cited by 17 publications

(10 citation statements)

References 57 publications

(46 reference statements)

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“…However, because of the occupancy of—and decrease in the number of—active sites at higher analyte concentrations, the sensitivity and the slope became lower [ 44 ]. This demonstrates that the quantitative analysis of CBD using the Fe 3 O 4 -NH 2 -GN/GCE was interesting and acceptable [ 45 ]. The detection abilities of the reported electrochemical sensors for CBD are listed and compared with the Fe 3 O 4 -NH 2 -GN/GCE in Table 2 .…”

Section: Resultsmentioning

confidence: 99%

An Electrochemical Sensor Based on Amino Magnetic Nanoparticle-Decorated Graphene for Detection of Cannabidiol

et al. 2021

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For detection of cannabidiol (CBD)—an important ingredient in Cannabis sativa L.—amino magnetic nanoparticle-decorated graphene (Fe3O4-NH2-GN) was prepared in the form of nanocomposites, and then modified on a glassy carbon electrode (GCE), resulting in a novel electrochemical sensor (Fe3O4-NH2-GN/GCE). The applied Fe3O4-NH2 nanoparticles and GN exhibited typical structures and intended surface groups through characterizations via transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray powder diffraction (XRD), vibrating sample magnetometer (VSM), and Raman spectroscopy. The Fe3O4-NH2-GN/GCE showed the maximum electrochemical signal for CBD during the comparison of fabricated components via the cyclic voltammetry method, and was systematically investigated in the composition and treatment of components, pH, scan rate, and quantitative analysis ability. Under optimal conditions, the Fe3O4-NH2-GN/GCE exhibited a good detection limit (0.04 μmol L−1) with a linear range of 0.1 μmol L−1 to 100 μmol L−1 (r2 = 0.984). In the detection of CBD in the extract of C. sativa leaves, the results of the electrochemical method using the Fe3O4-NH2-GN/GCE were in good agreement with those of the HPLC method. Based on these findings, the proposed sensor could be further developed for the portable and rapid detection of natural active compounds in the food, agricultural, and pharmaceutical fields.

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Section: Resultsmentioning

confidence: 99%

An Electrochemical Sensor Based on Amino Magnetic Nanoparticle-Decorated Graphene for Detection of Cannabidiol

et al. 2021

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“…The MXene powder was prepared by our last work [ 29 ]. A measure of 0.4 g CS powder was added into 1 mL Acetic acid and then added ultrapure water until 100 g, and was stirred for 2 h to obtain CS solution (0.4 wt%, pH = 4.05).…”

Section: Methodsmentioning

confidence: 99%

A Novel Highly Sensitive Electrochemical Nitrite Sensor Based on a AuNPs/CS/Ti3C2 Nanocomposite

Wang

et al. 2022

Nanomaterials

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Nitrite is common inorganic poison, which widely exists in various water bodies and seriously endangers human health. Therefore, it is very necessary to develop a fast and online method for the detection of nitrite. In this paper, we prepared an electrochemical sensor for highly sensitive and selective detection of nitrite, based on AuNPs/CS/MXene nanocomposite. The characterization of the nanocomposite was demonstrated by scanning electron microscopy (SEM), a transmission electron microscope (TEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). Under the optimized conditions, the fabricated electrode showed good performance with the linear range of 0.5–335.5 μM and 335.5–3355 μM, the limit of detection is 69 nM, and the sensitivity is 517.8 and 403.2 μA mM−1 cm−2. The fabricated sensors also show good anti-interference ability, repeatability, and stability, and have the potential for application in real samples.

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“…The resulted electrode AuNPs/Chit/Ti 3 C 2 T x /GCE showed good performance, two linear ranges, 0.5–335 μM and 335–3355 μM, and LOD of 0.069 μM. In their previous research [ 18 ], a AuNPs/Ti 3 C 2 T x /ERGO/GCE sensor was designed exhibiting linear ranges 0.5–80 μM and 80–780 μM with limits of detection 0.15 μM and 0.051 μM for nitrites sensing.…”

Section: Introductionmentioning

confidence: 94%

Nitrites Detection with Sensors Processed via Matrix-Assisted Pulsed Laser Evaporation

et al. 2022

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This work is focused on the application of a laser-based technique, i.e., matrix-assisted pulsed laser evaporation (MAPLE) for the development of electrochemical sensors aimed at the detection of nitrites in water. Commercial carbon-based screen-printed electrodes were modified by MAPLE via the application of a newly developed composite coating with different concentrations of carbon nanotubes (CNTs), chitosan, and iron (II) phthalocyanine (C32H16FeN8). The performance of the newly fabricated composite coatings was evaluated both by investigating the morphology and surface chemistry of the coating, and by determining the electro-catalytic oxidation properties of nitrite with bare and modified commercial carbon-based screen-printed electrode. It was found that the combined effect of CNTs with chitosan and C32H16FeN8 significantly improves the electrochemical response towards the oxidation of nitrite. In addition, the MAPLE modified screen-printed electrodes have a limit of detection of 0.12 µM, which make them extremely useful for the detection of nitrite traces.

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One-Step Electrodeposition Synthesized Aunps/Mxene/ERGO for Selectivity Nitrite Sensing

Cited by 17 publications

References 57 publications

An Electrochemical Sensor Based on Amino Magnetic Nanoparticle-Decorated Graphene for Detection of Cannabidiol

An Electrochemical Sensor Based on Amino Magnetic Nanoparticle-Decorated Graphene for Detection of Cannabidiol

A Novel Highly Sensitive Electrochemical Nitrite Sensor Based on a AuNPs/CS/Ti3C2 Nanocomposite

Nitrites Detection with Sensors Processed via Matrix-Assisted Pulsed Laser Evaporation

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