Electrochemical sensor based on polyamide 6/polypyrrole electrospun nanofibers coated with reduced graphene oxide for malathion pesticide detection

Migliorini, Fernanda L.; Sanfelice, Rafaela C.; Mercante, Luiza A.; Facure, Murilo H. M.; Corrêa, Daniel S.

doi:10.1088/2053-1591/ab5744

Cited by 46 publications

(16 citation statements)

References 37 publications

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“…They can also detect metals, such as mercury, lead, chromium, toxins, and endocrine disrupting chemicals. The detection of persistent pollutants and heavy metals in aqueous samples can be performed with sensors and biosensors, such as an AFM tip nanobiosensor with acetyl-CoA carboxylase, an immunosensor based on a modified carbon printed electrode, an electrochemical sensor based on polymeric electrospun nanofibers of polyamide 6 (PA6)/polypyrrole (PPy) surface-modified with two forms of graphene, a biosensor with double encapsulated algae strains Chlorella vulgaris and Pseudokirchneriella subcapitata alginate beads/silica gel, a biosensor containing recombinant Escherichia coli [ 50 , 51 , 52 , 53 , 54 ]. They can convert the information about the presence of the pollutant into a measurable signal; if it is a biosensor, the element used to detect the analyte is biological.…”

Section: Methodsmentioning

confidence: 99%

Xenobiotics—Division and Methods of Detection: A Review

Štefanac

Grgas

Dragičević

2021

JoX

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Xenobiotics are compounds of synthetic origin, usually used for domestic, agricultural, and industrial purposes; in the environment, they are present in micropollutant concentrations and high concentrations (using ng/L to µg/L units). Xenobiotics can be categorized according to different criteria, including their nature, uses, physical state, and pathophysiological effects. Their impacts on humans and the environment are non-negligible. Prolonged exposure to even low concentrations may have toxic, mutagenic, or teratogenic effects. Wastewater treatment plants that are ineffective at minimizing the release of xenobiotic compounds are one of the main sources of xenobiotics in the environment (e.g., xenobiotic compounds reach the environment, affecting both humans and animals). In order to minimize the negative impacts, various laws and regulations have been adopted in the EU and across the globe, with an emphasis on xenobiotics removal from the environment, in a way that is economically, environmentally, and socially acceptable, and will not result in their accumulation, or creation of compounds that are more harmful. Detection methods allow detecting even small concentrations of xenobiotics in samples, but the problem is the diversity and mix of compounds present in the environment, in which it is not known what their effects are). In this review, the division of xenobiotics and their detection methods will be presented.

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Section: Methodsmentioning

confidence: 99%

Xenobiotics—Division and Methods of Detection: A Review

Štefanac

Grgas

Dragičević

2021

JoX

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“…In a study to improve the LOD of malathion, rGO, which served as a large adsorption surface for adsorption, was modified on the surface of polyamide and polypyrrole electrospun nanofibers. (94) There has also recently been increased use of graphenebased electrodes made using a graphene ink and pencil graphite electrode (PGE). In one example, phosphotriesterase (PTE) was conjugated to the graphene surface via glutaraldehyde cross-linking and, as a result, rapid sensing with a response time of 5 s and an LOD of 3 nM was obtained.…”

Section: Detection Of Chemical Warfare Agent Simulantmentioning

confidence: 99%

Graphene-based Materials in Gas Sensor Applications: A Review

Demon¹,

Kamisan²,

Abdullah³

et al. 2020

Sensors and Materials

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Graphene and chemically modified graphene can be fabricated via numerous routes each with its own merits concerning ease of processability, cost-effectiveness for large-scale production, and also health and safety. One of the promising applications of graphene-based composites is gas sensing, which is mainly useful for environmental monitoring. We review some of the significant findings on graphene-based sensing materials for the detection of organic vapors, toxic gases, and chemical warfare agent simulants using an electrochemical method. Electrochemical sensing can be performed by inducing interactions between gas molecules and a graphene layer, such as charge transfer that gives a change in an electrical signal. The intrinsic properties of graphene and its role in some gas sensing applications will be discussed. Graphene and graphene oxide (GO) work as continuous conductive networks with a large number of surface adsorption sites for many gas molecules. Hybrid graphene devices incorporate semiconductors, metals, and molecular binders to enhance the capabilities of solidstate gas sensors. This article also addresses current approaches to the commercialization of graphene-based gas sensors.

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“…Apart from these biomolecules, other nanomaterials, such as metallic nanoparticles [ 97 ] and carbon nanomaterials [ 98 ], have also been used for the detection of harmful chemicals present in the food products. Another work depicting the use of graphene for inspecting the quality of food was shown by Migliorini et al [ 99 ], where reduced graphene oxide was used for the detection of malathion pesticide. The devices were formed using polymeric nanofibers, having a combination of polyamide 6 and polypyrrole, that were electrospun together along with graphene.…”

Section: Type Of Impedimetric Sensors Utilized For the Inspection mentioning

confidence: 99%

A Review on the Use of Impedimetric Sensors for the Inspection of Food Quality

Yuan

Nag

et al. 2020

IJERPH

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This paper exhibits a thorough review of the use of impedimetric sensors for the analysis of food quality. It helps to understand the contribution of some of the major types of impedimetric sensors that are used for this application. The deployment of impedimetric sensing prototypes has been advantageous due to their wide linear range of responses, detection of the target analyte at low concentrations, good stability, high accuracy and high reproducibility in the results. The choice of these sensors was classified on the basis of structure and the conductive material used to develop them. The first category included the use of nanomaterials such as graphene and metallic nanowires used to form the sensing devices. Different forms of graphene nanoparticles, such as nano-hybrids, nanosheets, and nano-powders, have been largely used to sense biomolecules in the micro-molar range. The use of conductive materials such as gold, copper, tungsten and tin to develop nanowire-based prototypes for the inspection of food quality has also been shown. The second category was based on conventional electromechanical circuits such as electronic noses and other smart systems. Within this sector, the standardized systems, such as electronic noses, and LC circuit -based systems have been explained. Finally, some of the challenges posed by the existing sensors have been listed out, along with an estimate of the increase in the number of sensors employed to assess food quality.

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Electrochemical sensor based on polyamide 6/polypyrrole electrospun nanofibers coated with reduced graphene oxide for malathion pesticide detection

Cited by 46 publications

References 37 publications

Xenobiotics—Division and Methods of Detection: A Review

Xenobiotics—Division and Methods of Detection: A Review

Graphene-based Materials in Gas Sensor Applications: A Review

A Review on the Use of Impedimetric Sensors for the Inspection of Food Quality

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