MXene@Ag-based ratiometric electrochemical sensing strategy for effective detection of carbendazim in vegetable samples

Zhong, Wei; Gao, Feng; Zou, Jin; Liu, Shuwu; Li, Mingfang; Gao, Yansha; Yu, Yongfang; Wang, Xiaoqiang; Lu, Limin

doi:10.1016/j.foodchem.2021.130006

Cited by 126 publications

(34 citation statements)

References 39 publications

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“…The limit of detection (LOD) and sensitivity are calculated using a standard formula, − and the LOD value is found to be 0.2 nM, 95.71 μA μM –1 cm –2 which is lower LOD and higher sensitivity when compared to previously reported literature for CBZ sensing based on different electrochemical platforms (Table ). − The enhanced activity of Mo 2 C@NiMn-LDH can be ascribed to the following reasons: (i) synergy effect between NiMn-LDH and Mo 2 C, (ii) increased electronic conductivity, and (iii) electron transfer due to morphological encapsulation, and hence, these results appropriately identify that Mo 2 C@NiMn-LDH/SPCE has an efficient capability for the determination of CBZ.…”

Section: Electrochemical Analysismentioning

confidence: 83%

Interfacial Superassembly of Mo₂C@NiMn-LDH Frameworks for Electrochemical Monitoring of Carbendazim Fungicide

Joseph

Baby

Wang

et al. 2021

ACS Sustainable Chem. Eng.

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The large-scale usage of fungicides has been encountered with their manifestations in various agro-food products. This causes several detrimental impacts such as phytotoxicity and microbial resistance that affect different levels of ecological organization, which call for strict quantification of such toxic substances. In this work, we report the synthesis of molybdenum carbide (Mo2C) MXene on three-dimensional Globe Amaranth flower-like NiMn layered double-hydroxide (NiMn-LDH) petal arrays that are intercalated with the CO3 2– backbone via a sustainable, scalable, and facile synthetic hydrothermal route for the electrochemical detection of carbendazim (CBZ). The fabricated electrode favors enlarged active surface area, high electrical conductivity, rapid mass transport, and ion diffusion that enhance the electrochemical performance toward CBZ monitoring where the combined effects of NiMn-LDH and Mo2C provide improved electrochemical properties. Under optimum conditions, the Mo2C@NiMn-LDH-modified electrode delivers static characteristics such as wide dynamic linear response (0.001–232.14 μM), low detection limit (0.2 nM), higher sensitivity (95.71 μA μM–1 cm–2), and good stability (30 cycles) and reproducibility (5 electrodes). We further demonstrate the interference-free sensing of CBZ by the Mo2C@NiMn-LDH sensor, suggesting its feasibility for practical applications in real-world samples with acceptable recovery ranges (water sample = ±97.50–99.43% and vegetable extract samples = ±98.20–99.86%).

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Section: Electrochemical Analysismentioning

confidence: 83%

Interfacial Superassembly of Mo₂C@NiMn-LDH Frameworks for Electrochemical Monitoring of Carbendazim Fungicide

Joseph

Baby

Wang

et al. 2021

ACS Sustainable Chem. Eng.

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“…Wang et al developed a ratiometric electrochemical immuno-sensor for sensitive determination of Human epidermal growth factor receptor-2 using reduced graphene oxide and polydopamine grafted ferrocene/Au@Ag nanoshuttles performing as an electrode material and a hollow Ni@PtNi yolk-shell nanocages-thionine as the signal tags, which measured distinct electrochemical signals for Fc and Thi, respectively [ 135 ]. Zhong et al used MXene on Ag nanoclusters and amino-functionalized multi-walled carbon nanotubes composite to create a new ratiometric electrochemical sensor for the detection of carbendazim [ 136 ]. Urgunde et al performed simultaneous detection of dopamine and uric acid using NiCo 2 O 4 on a printed biosensor chip with low LOD and high sensitivity [ 33 ].…”

Section: Salient Applications Of 2d Materialsmentioning

confidence: 99%

2D materials: increscent quantum flatland with immense potential for applications

et al. 2022

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Quantum flatland i.e., the family of two dimensional (2D) quantum materials has become increscent and has already encompassed elemental atomic sheets (Xenes), 2D transition metal dichalcogenides (TMDCs), 2D metal nitrides/carbides/carbonitrides (MXenes), 2D metal oxides, 2D metal phosphides, 2D metal halides, 2D mixed oxides, etc. and still new members are being explored. Owing to the occurrence of various structural phases of each 2D material and each exhibiting a unique electronic structure; bestows distinct physical and chemical properties. In the early years, world record electronic mobility and fractional quantum Hall effect of graphene attracted attention. Thanks to excellent electronic mobility, and extreme sensitivity of their electronic structures towards the adjacent environment, 2D materials have been employed as various ultrafast precision sensors such as gas/fire/light/strain sensors and in trace-level molecular detectors and disease diagnosis. 2D materials, their doped versions, and their hetero layers and hybrids have been successfully employed in electronic/photonic/optoelectronic/spintronic and straintronic chips. In recent times, quantum behavior such as the existence of a superconducting phase in moiré hetero layers, the feasibility of hyperbolic photonic metamaterials, mechanical metamaterials with negative Poisson ratio, and potential usage in second/third harmonic generation and electromagnetic shields, etc. have raised the expectations further. High surface area, excellent young’s moduli, and anchoring/coupling capability bolster hopes for their usage as nanofillers in polymers, glass, and soft metals. Even though lab-scale demonstrations have been showcased, large-scale applications such as solar cells, LEDs, flat panel displays, hybrid energy storage, catalysis (including water splitting and CO2 reduction), etc. will catch up. While new members of the flatland family will be invented, new methods of large-scale synthesis of defect-free crystals will be explored and novel applications will emerge, it is expected. Achieving a high level of in-plane doping in 2D materials without adding defects is a challenge to work on. Development of understanding of inter-layer coupling and its effects on electron injection/excited state electron transfer at the 2D-2D interfaces will lead to future generation heterolayer devices and sensors.

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“…A common method is to use the strong reducibility of MXene to reduce metal salts to form the composite of MXene and metal nanoparticles. For instance, our group put forward the use of a composite of MXene@Ag nanoclusters (AgNCs) and amino-functionalized multi-walled carbon nanotubes as a sensing platform for electrochemical detection of carbendazim, where well-dispersed AgNCs were allowed to grow in situ on the surface of MXene with self-reduction approach [ 25 ]. Furthermore, studies have demonstrated that gold nanoparticles (AuNPs) could furnish more active sites to immobilize aptamers due to its characteristics, including high specific surface area, good biocompatibility and catalytic properties [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

MXene–AuNP-Based Electrochemical Aptasensor for Ultra-Sensitive Detection of Chloramphenicol in Honey

Yang

Zhong

et al. 2022

Molecules

Self Cite

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A simple and label-free electrochemical aptasensor was developed for ultra-sensitive determination of chloramphenicol (CAP) based on a 2D transition of metal carbides (MXene) loaded with gold nanoparticles (AuNPs). The embedded AuNPs not only inhibit the aggregation of MXene sheets, but also improve the quantity of active sites and electronic conductivity. The aptamers (Apts) were able to immobilize on the MXene–AuNP modified electrode surface through Au–S interaction. Upon specifically binding with CAP with high affinity, the CAP–Apt complexes produced low conductivity on the aptasensor surface, leading to a decreased electrochemical signal. The resulting current change was quantitatively correlated with CAP concentration. Under optimized experimental conditions, the constructed aptasensor exhibited a good linear relationship within a wide range of 0.0001–10 nM and with a low detection limit of 0.03 pM for CAP. Moreover, the developed aptasensor has been applied to the determination of CAP concentration in honey samples with satisfactory results.

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MXene@Ag-based ratiometric electrochemical sensing strategy for effective detection of carbendazim in vegetable samples

Cited by 126 publications

References 39 publications

Interfacial Superassembly of Mo₂C@NiMn-LDH Frameworks for Electrochemical Monitoring of Carbendazim Fungicide

Interfacial Superassembly of Mo₂C@NiMn-LDH Frameworks for Electrochemical Monitoring of Carbendazim Fungicide

2D materials: increscent quantum flatland with immense potential for applications

MXene–AuNP-Based Electrochemical Aptasensor for Ultra-Sensitive Detection of Chloramphenicol in Honey

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MXene@Ag-based ratiometric electrochemical sensing strategy for effective detection of carbendazim in vegetable samples

Cited by 126 publications

References 39 publications

Interfacial Superassembly of Mo2C@NiMn-LDH Frameworks for Electrochemical Monitoring of Carbendazim Fungicide

Interfacial Superassembly of Mo2C@NiMn-LDH Frameworks for Electrochemical Monitoring of Carbendazim Fungicide

2D materials: increscent quantum flatland with immense potential for applications

MXene–AuNP-Based Electrochemical Aptasensor for Ultra-Sensitive Detection of Chloramphenicol in Honey

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Product

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Interfacial Superassembly of Mo₂C@NiMn-LDH Frameworks for Electrochemical Monitoring of Carbendazim Fungicide

Interfacial Superassembly of Mo₂C@NiMn-LDH Frameworks for Electrochemical Monitoring of Carbendazim Fungicide