Fluorescence and colorimetric dual-mode sensor for visual detection of malathion in cabbage based on carbon quantum dots and gold nanoparticles

Liang, Nini; Hu, Xuetao; Li, Wenting; Mwakosya, Anjelina W.; Guo, Ziang; Xu, Yanhua; Huang, Xiaowei; Li, Zhihua; Zhang, Xinai; Zhang, Xiaobo; Shi, Jiyong

doi:10.1016/j.foodchem.2020.128494

Cited by 79 publications

(28 citation statements)

References 26 publications

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“…1 However, overuse of malathion can cause neurotoxicity, teratogenicity, and carcinogenic damage to humans and mammals. 2 To protect human health and the environment from the hazards of malathion, it is urgent to develop on-site malathion assay methods. Although the introduction of nanozymes in the colorimetric method avoids the high cost and low stability of the enzyme, 9 the selective inhibition of nanozymes by pesticides has been rarely studied.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…With the large-scale cultivation of malathion-resistant crops, its scope of application continues to expand. However, overuse of malathion can cause neurotoxicity, teratogenicity, and carcinogenic damage to humans and mammals . To protect the environment and human health from the hazards of malathion, it is urgent to develop a simple, specific, and sensitive method for detecting malathion.…”

Section: Introductionmentioning

confidence: 99%

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Selective Inhibition toward Dual Enzyme-like Activities of Iridium Nanozymes for a Specific Colorimetric Assay of Malathion without Enzymes

Liang

Wang

Zhang

et al. 2022

J. Agric. Food Chem.

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A colorimetric assay based on an enzyme-inhibition strategy is promising for the on-site detection of pesticide residues. Due to the high cost and low stability of enzymes, nanozymes (nanomaterials with enzyme-like activities) are widely developed as substitutes of enzymes. However, the inhibition of pesticides toward enzymes and nanozymes generally lacks selectivity. It is of great significance and challenge to design a specific pesticide assay based on an activity-inhibition strategy. Here, we discovered that iridium nanoparticles possess both peroxidase-like and oxidase-like activities under the same conditions, and their catalytic mechanisms are different. The synergistic effect of dual enzyme-like activities enhanced the colorimetric signal. Interestingly, the dual enzyme-mimicking activities could be simultaneously inhibited, and the inhibition effect exhibited high selectivity toward malathion. Considering the popularity and the hazards of malathion, a malathion assay method based on activity inhibition was established without enzymes and a redundant process. The synergistic effect of the selective inhibition of dual enzyme-like activities enhanced the selectivity and sensitivity. The proposed assay strategy opens up an avenue for specific assay of various pesticides.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Selective Inhibition toward Dual Enzyme-like Activities of Iridium Nanozymes for a Specific Colorimetric Assay of Malathion without Enzymes

Liang

Wang

Zhang

et al. 2022

J. Agric. Food Chem.

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“…The gold nanoparticles quench the fluorescence of the carbon dots based on the principle of fluorescence resonance energy transfer, but the fluorescence is detected after the detection of malathion. The intensity increases and the color changes from red to blue; thus, it is possible to quickly detect malathion through simple visual judgment [31]. Another good candidate for detection of pesticide residues is graphene quantum dots, which are widely used in biological imaging and optical sensing due to their low cytotoxicity and excellent biocompatibility [32].…”

Section: Cnms As Sensors To Detect Pesticide Residuesmentioning

confidence: 99%

Carbon-Based Nanomaterials for Sustainable Agriculture: Their Application as Light Converters, Nanosensors, and Delivery Tools

Zhu

et al. 2022

Plants

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Nano-enabled agriculture is now receiving increasing attentions. Among the used nanomaterials, carbon-based nanomaterials are good candidates for sustainable agriculture. Previous review papers about the role of carbon-based nanomaterials in agriculture are either focused on one type of carbon-based nanomaterial or lack systematic discussion of the potential wide applications in agriculture. In this review, different types of carbon-based nanomaterials and their applications in light converters, nanosensors, and delivery tools in agriculture are summarized. Possible knowledge gaps are discussed. Overall, this review helps to better understand the role and the potential of carbon-based nanomaterials for nano-enabled agriculture.

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“…Semiconductor quantum dots (QDs) have shown emerging significant promise as solid-state lightings and displays ( Li et al, 2020 ; Zvaigzne et al, 2020 ), sensors ( Koeppel et al, 2007 ; Liang et al, 2021 ), biomedicine ( Zvaigzne et al, 2016 ; Pashazadeh-Panahi and Hasanzadeh, 2019 ), biological labeling ( Bai et al, 2020 ), solar cell ( Xu T. et al, 2021 ; Ostadebrahim and Dehghani, 2021 ), and laser physics ( Nautiyal et al, 2021 ; Tsuji et al, 2021 ) owing to their superior optoelectronic properties such as high photoluminescence (PL) quantum yield (QY) (PLQY), narrow emission bandwidth, size-controlled tunable emission wavelength, and high photochemical stability and durability ( Zhang et al, 2015 ; Li Q. et al, 2016 ; Harris et al, 2016 ; Leach and Macdonald, 2016 ; Giansante and Infante, 2017 ; Owen and Brus, 2017 ; Ghosh and Manna, 2018 ). In particular, QDs are considered to be the candidate materials with the most potential for application in the next generation of lightings and displays ( Moon and Chae, 2020 ; Fang et al, 2021 ; Kıbrıslı et al, 2021 ; Li et al, 2021 ; Yuan et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient and Stable CdZnSeS/ZnSeS Quantum Dots for Application in White Light-Emitting Diode

Chen

Zhong

et al. 2022

Front. Chem.

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Semiconductor quantum dots (QDs) are a promising luminescent phosphor for next-generation lightings and displays. In particular, QD-based white light-emitting diodes (WLEDs) are considered to be the candidate light sources with the most potential for application in displays. In this work, we synthesized quaternary/ternary core/shell alloyed CdZnSeS/ZnSeS QDs with high bright emission intensity. The QDs show good thermal stability by performing high temperature-dependent experiments that range from 295 to 433 K. Finally, the WLED based on the CdZnSeS/ZnSeS QDs exhibits a luminous efficiency (LE) of 28.14 lm/W, an external quantum efficiency (EQE) of 14.86%, and a warm bright sunlight close to the spectrum of daylight (Commission Internationale de l'éclairage (CIE) coordinates 0.305, 0.371). Moreover, the photoluminescence (PL) intensity, LE, EQE, and correlated color temperature (CCT) of as-prepared QD WLED remained relatively stable with only slight changes in the luminescence stability experiment.

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Fluorescence and colorimetric dual-mode sensor for visual detection of malathion in cabbage based on carbon quantum dots and gold nanoparticles

Cited by 79 publications

References 26 publications

Selective Inhibition toward Dual Enzyme-like Activities of Iridium Nanozymes for a Specific Colorimetric Assay of Malathion without Enzymes

Selective Inhibition toward Dual Enzyme-like Activities of Iridium Nanozymes for a Specific Colorimetric Assay of Malathion without Enzymes

Carbon-Based Nanomaterials for Sustainable Agriculture: Their Application as Light Converters, Nanosensors, and Delivery Tools

Highly Efficient and Stable CdZnSeS/ZnSeS Quantum Dots for Application in White Light-Emitting Diode

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