Highly Sensitive Detection of Thiabendazole Residues in Food Samples Based on Multiwall Carbon Nanotubes Decorated Two-Dimensional Layered Molybdenum Disulfide

Cheng, Fuliang; Liao, Xiaoning; Huang, Zhiwen; Xu, Liting; Zhou, Ying; Zhang, Xue

doi:10.1007/s12161-019-01698-y

Cited by 17 publications

(16 citation statements)

References 35 publications

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“…As for the MoS 2 QDs@MWCNTs, the early weight loss is attributed to water evaporation followed by the calcination of MWCNTs at the onset temperature of about 500 °C. The onset temperature of MWCNT calcination in the MoS 2 QDs@MWCNTs sample is about 100 °C lower than that of the MWCNT sample, showing that the MWCNTs get more individualized after anchoring of MoS 2 , in good accordance with the TEM results (Figure c). Evidently, the well-dispersed MWCNTs and the MoS 2 QDs lead to enhanced surface area of MoS 2 QDs@MWCNTs, which will be further proved by the chronocoulometry technique in the Electrochemical Characterization section.…”

Section: Results and Discussionsupporting

confidence: 81%

Anchoring Metallic MoS₂ Quantum Dots over MWCNTs for Highly Sensitive Detection of Postharvest Fungicide in Traditional Chinese Medicines

Zhang

et al. 2021

ACS Omega

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Carbendazim, a very common contamination to the traditional Chinese medicines (TCMs), has posed serious threat to the environment and human health. However, sensitive and selective detection of carbendazim (MBC) in the TCMs is a big challenge for their complex chemical constituents. In this work, a 0D/1D nanohybrid was developed by anchoring 1T-phased MoS 2 quantum dots (QDs) over multiwall carbon nanotubes (MWCNTs) via a facile assembly method. High-resolution transmission electron microscopy (HRTEM), Raman spectroscopy, X-ray photoelectron spectroscopy, and thermogravimetric analysis (TGA) together with EIS reveal that the 1T-phased QDs can anchor over MWCNTs via van der Waals forces, and the anchoring improves the nanohybrid surface area and conductivity. Therefore, the electrochemical sensor fabricated based on the MoS 2 QDs@MWCNT nanohybrid shows excellent catalytic activity to MBC oxidation. Under optimized conditions, the sensor presents a linear voltammetry response to MBC concentration from 0.04 to 1.00 μmol•L −1 , a low detection limit of 2.6 × 10 −8 mol• L −1 , as well as high selectivity, good reproducibility, and long-term stability. Moreover, the sensor has been successfully employed to determine MBC in two typical TCMs and the obtained recoveries are in good accordance with the results achieved by HPLC, showing that the constructed sensor plate holds great practical application in MBC analysis with complex matrix.

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Section: Results and Discussionsupporting

confidence: 81%

Anchoring Metallic MoS₂ Quantum Dots over MWCNTs for Highly Sensitive Detection of Postharvest Fungicide in Traditional Chinese Medicines

Zhang

et al. 2021

ACS Omega

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“…This can be ascribed to the high electrocatalytic effect and electrical conductivity of Ag NPs, thus enhancing the electron transfer rate. 19,26,27 Further to this, as shown in Figure S1, the catalytic effect of the composite increased with Ag loading with an optimum weight ratio of 60%.…”

Section: Characterization Of Ag-mos 2 Nanocompositementioning

confidence: 61%

“…TBZ, a benzimidazole derivative, is frequently used in the post-harvest processing of fruits to prevent mold and parasitic spoilage. TBZ is also known to cause moderate to acute dermal toxicity and can be a potential carcinogen. − Hence, the peroxidase-like activity of Ag-MoS 2 , which generates a colored product upon TBZ oxidation, can be practical for the rapid colorimetric detection of such pesticides.…”

Section: Introductionmentioning

confidence: 99%

Rapid Colorimetric Detection of Thiabendazole Based on Its Inhibition Effect on the Peroxidase Mimetic Activity of Ag-MoS₂ Nanozyme

Mekonnen

Mola

Abda

2023

ACS Agric. Sci. Technol.

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Given their stability, ease of preparation, high catalytic activity, and lower cost, enzyme mimetic nanomaterials (nanozymes) represent an emerging class of chemosensors convenient for food safety monitoring. Herein, Ag-MoS 2 nanozyme is reported as an effective peroxidase mimic for colorimetric detection of thiabendazole (TBZ), a pesticide used in the postharvest process of fruits. The synergetic effect of Ag on MoS 2 resulted in an enhanced peroxidase-like activity (45%) that catalyzed the chromogenic reaction between TMB and H 2 O 2 . The nanozyme showed a comparable affinity for TMB (K m = 0.7 mM) with that reported for the natural HRP enzyme. The catalytic reaction resulted in blue color with characteristic absorption maxima ca. 652 nm, signaling the oxidation of TMB. In the presence of TBZ, the intensity of the blue color decreased, indicating the inhibition effect of the pesticide on the peroxidase-like catalytic activity. Rapid colorimetric detection of TBZ down to 0.24 μM was achieved based on its concentration-dependent inhibition effect. The recoveries from spiked fruit matrices were between 98 and 116%. The obtained results showed the developed sensor as a convenient alternative to natural enzymes and other conventional methods for food safety monitoring purposes.

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“…Meanwhile, several novel two‐dimensional (2D) materials such as molybdenum disulfide (MoS 2 , F. Cheng et al., 2020; X. Lin et al., 2019), Graphitic carbon nitride (g‐C 3 N 4 , Hatamie et al., 2019), and boron nitride (BN, Kokulnathan et al., 2020) have been introduced to assist direct detection of electroactive food safety hazards. The introduction of novel 2D materials into electrochemical sensors obviously improved the detection performances including linear range, sensitivity, and stability.…”

Section: Detection Mechanisms For Analytesmentioning

confidence: 99%

“…Meanwhile, several novel two-dimensional (2D) materials such as molybdenum disulfide (MoS 2 , F. Cheng et al, 2020;, ing good electrical conductivity have increasingly been applied in the electrochemistry field (Rasheed et al, 2020;Ren et al, 2020). MXenes have a general formula of M n+1 X n T x (n = 1, 2, or 3), where M represents an early transition metal; X is the carbon and/or nitrogen, and T is the surface termination (O, OH, F, and/or Cl; Ming et al, 2020).…”

Section: Non-affinity Detectionmentioning

confidence: 99%

Recent advances in nanomaterial‐assisted electrochemical sensors for food safety analysis

Ren

et al. 2022

Food Frontiers

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Food safety as a public health issue has aroused worldwide concern. Food safety risks caused by the existence of food safety hazards in food may occur in all stages of the food supply chain. Thus, great emphasis is placed on sensitive, selective, and convenient analytical methods of various food safety hazards in food. At present, nanomaterials are at the forefront of various electrochemical sensing applications. Given their unique physical, chemical, and biological characteristics, nanomaterials are considered perfect candidates for the design of electrode surface to construct electrochemical sensors with excellent analytical performance. With the assistance of nanomaterials, electrochemical sensors are a potential alternative to conventional methods of food safety analysis. This review focuses on current research achievements of nanomaterial‐assisted electrochemical sensors for food safety analysis reported in recent 5 years. It highlights the different detection mechanisms for analytes, flexible sensing strategies based on nanomaterials, and portable miniaturized electrochemical devices. Finally, the challenges and limitations in the design of electrochemical sensors for food safety analysis are also discussed.

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Highly Sensitive Detection of Thiabendazole Residues in Food Samples Based on Multiwall Carbon Nanotubes Decorated Two-Dimensional Layered Molybdenum Disulfide

Cited by 17 publications

References 35 publications

Anchoring Metallic MoS₂ Quantum Dots over MWCNTs for Highly Sensitive Detection of Postharvest Fungicide in Traditional Chinese Medicines

Anchoring Metallic MoS₂ Quantum Dots over MWCNTs for Highly Sensitive Detection of Postharvest Fungicide in Traditional Chinese Medicines

Rapid Colorimetric Detection of Thiabendazole Based on Its Inhibition Effect on the Peroxidase Mimetic Activity of Ag-MoS₂ Nanozyme

Recent advances in nanomaterial‐assisted electrochemical sensors for food safety analysis

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Highly Sensitive Detection of Thiabendazole Residues in Food Samples Based on Multiwall Carbon Nanotubes Decorated Two-Dimensional Layered Molybdenum Disulfide

Cited by 17 publications

References 35 publications

Anchoring Metallic MoS2 Quantum Dots over MWCNTs for Highly Sensitive Detection of Postharvest Fungicide in Traditional Chinese Medicines

Anchoring Metallic MoS2 Quantum Dots over MWCNTs for Highly Sensitive Detection of Postharvest Fungicide in Traditional Chinese Medicines

Rapid Colorimetric Detection of Thiabendazole Based on Its Inhibition Effect on the Peroxidase Mimetic Activity of Ag-MoS2 Nanozyme

Recent advances in nanomaterial‐assisted electrochemical sensors for food safety analysis

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Product

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About

Anchoring Metallic MoS₂ Quantum Dots over MWCNTs for Highly Sensitive Detection of Postharvest Fungicide in Traditional Chinese Medicines

Anchoring Metallic MoS₂ Quantum Dots over MWCNTs for Highly Sensitive Detection of Postharvest Fungicide in Traditional Chinese Medicines

Rapid Colorimetric Detection of Thiabendazole Based on Its Inhibition Effect on the Peroxidase Mimetic Activity of Ag-MoS₂ Nanozyme