Journal ArticleDOI
Facile Colorimetric Nanozyme Sheet for the Rapid Detection of Glyphosate in Agricultural Products Based on Inhibiting Peroxidase-Like Catalytic Activity of Porous Co3O4 Nanoplates.
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TLDR
In this article, a colorimetric nanozyme sheet for the rapid detection of glyphosate has been successfully prepared through the physical adsorption of porous Co3O4 nanoplates on a polyester fiber membrane.Abstract:
The rapid and onsite detection of glyphosate herbicides in agricultural products is still a challenge. Herein, a novel colorimetric nanozyme sheet for the rapid detection of glyphosate has been successfully prepared through the physical adsorption of porous Co3O4 nanoplates on a polyester fiber membrane. Glyphosate can specifically inhibit the peroxidase-mimicking catalytic activity of porous Co3O4 nanoplates, thereby the visual detection of glyphosate can be realized by distinguishing the change in the color intensity of the established nanozyme sheet. The prepared nanozyme sheet has good sensitivity and selectivity, with a detection limit of 0.175 mg·kg-1 for glyphosate detection just by the naked eyes. It can effectively detect glyphosate within 10 min, and the color spots can maintain more than 20 min. The nanozyme sheet is not easily affected by the external environment in detection and storage. The merits of the nanozyme sheet facilitate its practical application in the large-scale preliminary screening of glyphosate residues in agricultural products.read more
Citations
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Journal ArticleDOI
Enzyme-free and rapid visual quantitative detection for pesticide residues utilizing portable smartphone integrated paper sensor.
TL;DR: In this paper , a novel enzyme-free rapid and visual ratiometric fluorescence sensor for selectively quantitative detecting glyphosate by integrating the designed blue carbon nanodots (CDs) and gold nanoclusters (Au NCs).
Journal ArticleDOI
Porous Co3O4 nanodisks as robust peroxidase mimetics in an ultrasensitive colorimetric sensor for the rapid detection of multiple heavy metal residues in environmental water samples.
TL;DR: In this paper, the peroxidase-mimicking activity of porous Co3O4 nanodisks was investigated for the detection of multiple heavy metals in environmental water.
Journal ArticleDOI
G-quadruplex DNAzyme as peroxidase mimetic in a colorimetric biosensor for ultrasensitive and selective detection of trace tetracyclines in foods
TL;DR: In this article, an ultrasensitive colorimetric biosensor based on G-quadruplex DNAzyme was firstly proposed for the rapid detection of trace tetracycline antibiotics.
Journal ArticleDOI
G-quadruplex DNAzyme as peroxidase mimetic in a colorimetric biosensor for ultrasensitive and selective detection of trace tetracyclines in foods
TL;DR: In this paper , an ultrasensitive colorimetric biosensor based on G-quadruplex DNAzyme was firstly proposed for the rapid detection of trace tetracycline antibiotics.
Journal ArticleDOI
Aptamer-Target Recognition-Promoted Ratiometric Electrochemical Strategy for Evaluating the Microcystin-LR Residue in Fish without Interferences.
TL;DR: An aptamer-based dual-signal ratiometric electrochemical sensor for the sensitive and accurate analysis of microcystin-LR (MC-LR) was developed, using it as a proof-of-concept analyte to assess the bioaccumulated amount of MC-LR in the liver and meat of fish.
References
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Journal ArticleDOI
Intrinsic peroxidase-like activity of ferromagnetic nanoparticles
Lizeng Gao,Jie Zhuang,Leng Nie,Jinbin Zhang,Yu Zhang,Ning Gu,Taihong Wang,Jing Feng,Dongling Yang,Sarah Perrett,Xiyun Yan +10 more
TL;DR: It is reported that magnetite nanoparticles in fact possess an intrinsic enzyme mimetic activity similar to that found in natural peroxidases, which are widely used to oxidize organic substrates in the treatment of wastewater or as detection tools.
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Nanozymes: Classification, Catalytic Mechanisms, Activity Regulation, and Applications
TL;DR: This review systematically introduces the classification, catalytic mechanism, activity regulation as well as recent research progress of nanozymes in the field of biosensing, environmental protection, and disease treatments, etc. in the past years.
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Trends in glyphosate herbicide use in the United States and globally
TL;DR: Glyphosate will likely remain the most widely applied pesticide worldwide for years to come, and interest will grow in quantifying ecological and human health impacts, according to published global pesticide use data.
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Safety Evaluation and Risk Assessment of the Herbicide Roundup and Its Active Ingredient, Glyphosate, for Humans
TL;DR: It was concluded that the use of Roundup herbicide does not result in adverse effects on development, reproduction, or endocrine systems in humans and other mammals, and glyphosate is noncarcinogenic.
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Recent Advances in Nanozyme Research
Hui Wang,Kaiwei Wan,Xinghua Shi +2 more
TL;DR: The progress of experimental and computational research of nanoZymes on two issues over the past decade is briefly reviewed: experimental development of new nanozymes mimicking different types of enzymes and the catalytic mechanism proposed by experimental and theoretical study.