Carbon Nano-Onion Peroxidase Composite Biosensor for Electrochemical Detection of 2,4-D and 2,4,5-T

Sok, Vibol; Fragoso, Alex

doi:10.3390/app11156889

Cited by 13 publications

(4 citation statements)

References 36 publications

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“…The resulting current was stored in a paper supercapacitor, amplified, and output by a digital multimeter (DMM) ( Figure 3 a), enabling self-powered sensing and providing a novel idea for the design and development of point-of-care testing equipment. In another study, Sok et al developed a biosensor by fixing carbon nano-onions in a cyclodextrin substrate and depositing the synthesized nano-composite material on a screen-printing electrode [ 39 ]. The presence of 2,4-D could be detected through cyclic voltammetry, as it inhibits horseradish peroxidase and responds to the current.…”

Section: Polymer-based Biosensors For Detection Of Pesticide Residuesmentioning

confidence: 99%

Recent Advances in Polymer-Based Biosensors for Food Safety Detection

Wang,

Huang,

Weng

2023

Polymers

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The excessive use of pesticides and drugs, coupled with environmental pollution, has resulted in the persistence of contaminants on food. These pollutants tend to accumulate in humans through the food chain, posing a significant threat to human health. Therefore, it is crucial to develop rapid, low-cost, portable, and on-site biosensors for detecting food contaminants. Among various biosensors, polymer-based biosensors have emerged as promising probes for detection of food contaminants in recent years, due to their various functions such as target binding, enrichment, and simple signal reading. This paper aims to discuss the characteristics of five types of food pollutants—heavy metals, pesticide residues, pathogenic bacteria, allergens, and antibiotics—and their adverse effects on human health. Additionally, this paper focuses on the principle of polymer-based biosensors and their latest applications in detecting these five types of food contaminants in actual food samples. Furthermore, this review briefly examines the future prospects and challenges of biosensors for food safety detection. The insights provided in this review will facilitate the development of biosensors for food safety detection.

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Section: Polymer-based Biosensors For Detection Of Pesticide Residuesmentioning

confidence: 99%

Recent Advances in Polymer-Based Biosensors for Food Safety Detection

Wang,

Huang,

Weng

2023

Polymers

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“…In addition, rGO has been envisaged for the detection of pesticides through the immobilization of an esterase on a biocomposite containing fibrin and thrombin, which was assembled taking inspiration form the blood coagulation process [ 245 ]. Finally, CNOs were coupled to a peroxidase in a cyclodextrin polymer matrix for the detection of herbicides, as tested in soil and river water samples [ 238 ].…”

Section: Applications Of Cnm-enzyme Conjugatesmentioning

confidence: 99%

Carbon Nanomaterials (CNMs) and Enzymes: From Nanozymes to CNM-Enzyme Conjugates and Biodegradation

et al. 2022

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Carbon nanomaterials (CNMs) and enzymes differ significantly in terms of their physico-chemical properties—their handling and characterization require very different specialized skills. Therefore, their combination is not trivial. Numerous studies exist at the interface between these two components—especially in the area of sensing—but also involving biofuel cells, biocatalysis, and even biomedical applications including innovative therapeutic approaches and theranostics. Finally, enzymes that are capable of biodegrading CNMs have been identified, and they may play an important role in controlling the environmental fate of these structures after their use. CNMs’ widespread use has created more and more opportunities for their entry into the environment, and thus it becomes increasingly important to understand how to biodegrade them. In this concise review, we will cover the progress made in the last five years on this exciting topic, focusing on the applications, and concluding with future perspectives on research combining carbon nanomaterials and enzymes.

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“…The additional layer of nanomaterial that alters the shape and structure of the electrode surface can increase the electrical conductivity and surface area, improving sensitivity. Several carbon-based nanomaterials have been proposed in the literature for electrode surface modification, including carbon nanotubes (CNTs), graphene, carbon onions, graphene quantum dots, etc., both in their native form and as chemically functionalized derivatives. − …”

Section: Introductionmentioning

confidence: 99%

Screen-Printed Carbon Electrodes with Cationic Cyclodextrin Carbon Nanotubes and Ferrocenyl-Carnosine for Electrochemical Sensing of Hg(II)

Abate,

Neri,

Scala

et al. 2023

ACS Appl. Nano Mater.

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The study reports the use of nanoassembly based on cationic cyclodextrin carbon nanotubes (CNT-CDs) and ferrocenylcarnosine (FcCAR) for electrochemical sensing of Hg(II) in aqueous solution. β-cyclodextrins (CDs) were grafted onto CNTs by a click chemistry reaction between heptakis-(6-azido-6-deoxy)-β-cyclodextrin and alkyne-terminated CNTs. The cationic amine groups on the CD units were produced by the subsequent reduction of the residual nitrogen groups. The chemical composition and morphology of CNT-CDs were analyzed by X-ray photoelectron spectroscopy, scanning electron microscopy, and thermogravimetric analysis. A N,N-dimethylformamide dispersion of CNT-CDs was cast on the surface of screen-printed carbon electrodes (SPCEs), and the electrochemical response was evaluated by cyclic voltammetry (CV) using [Fe(CN) 6 ] 3− as the redox probe. The ability of SPCE/ CNT-CD to significantly enhance the electroactive properties of the redox probe was combined with a suitable recognition element (FcCAR) for Hg(II). The electrochemical response of the CNT-CD/FcCAR nanoassembly was evaluated by CV and electrochemical impedance spectroscopy. The analytical performance of the Hg(II) sensor was evaluated by differential pulsed voltammetry and chronoamperometry. The oxidative peak current showed a linear concentration dependence in the range of 1−100 nM, with a sensitivity of 0.12 μA/nM, a limit of detection of 0.50 nM, and a limit of quantification of 1 nM.

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Carbon Nano-Onion Peroxidase Composite Biosensor for Electrochemical Detection of 2,4-D and 2,4,5-T

Cited by 13 publications

References 36 publications

Recent Advances in Polymer-Based Biosensors for Food Safety Detection

Recent Advances in Polymer-Based Biosensors for Food Safety Detection

Carbon Nanomaterials (CNMs) and Enzymes: From Nanozymes to CNM-Enzyme Conjugates and Biodegradation

Screen-Printed Carbon Electrodes with Cationic Cyclodextrin Carbon Nanotubes and Ferrocenyl-Carnosine for Electrochemical Sensing of Hg(II)

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