Nanofiber‐Based Chemical Sensors

Andrady, Anthony L.

doi:10.1002/9781119267713.ch4

Cited by 10 publications

(8 citation statements)

References 133 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nanomaterials with large surface areas and carefully spaced functional sites on their surfaces have been suggested to increase sensitivity, target molecule accessibility, provide quicker mass transfer rates, and shorten biosensor reaction times [ 35 ]. Electrospun nanofibers (ESNFs) can be considered suitable for supporting the immobilization of biorecognition elements because they meet several requirements, including maximal contact with the surrounding media, an extensively large surface area, a very porous structure, excellent surface modification, and subcellular size [ 36 , 37 , 38 ]. For this purpose, Chokkiah et al synthesized polyvinyl alcohol (PVA)–polyaniline–graphitic carbon nitride ESNFs for chloride ion sensing to help environmental monitoring [ 39 ].…”

Section: Introductionmentioning

confidence: 99%

Development of an Enzymatic Biosensor Using Glutamate Oxidase on Organic–Inorganic-Structured, Electrospun Nanofiber-Modified Electrodes for Monosodium Glutamate Detection

et al. 2023

View full text Add to dashboard Cite

Herein, dendrimer-modified montmorillonite (Mt)-decorated poly-Ɛ-caprolactone (PCL) and chitosan (CHIT)-based nanofibers were prepared. Mt was modified with a poly(amidoamine) generation 1 (PAMAMG1) dendrimer, and the obtained PAMAMG1–Mt was incorporated into the PCL–CHIT nanofiber’s structure. The PCL–CHIT/PAMAMG1–Mt nanofibers were conjugated with glutamate oxidase (GluOx) to design a bio-based detection system for monosodium glutamate (MSG). PAMAMG1–Mt was added to the PCL–CHIT backbone to provide a multipoint binding side to immobilize GluOx via covalent bonds. After the characterization of PCL–CHIT/PAMAMG1–Mt/GluOx, it was calibrated for MSG. The linear ranges were determined from 0.025 to 0.25 mM MSG using PCL–CHIT/Mt/GluOx and from 0.0025 to 0.175 mM MSG using PCL–CHIT/PAMAMG1–Mt/GluOx (with a detection limit of 7.019 µM for PCL–CHIT/Mt/GluOx and 1.045 µM for PCL–CHIT/PAMAMG1–Mt/GluOx). Finally, PCL–CHIT/PAMAMG1–Mt/GluOx was applied to analyze MSG content in tomato soup without interfering with the sample matrix, giving a recovery percentage of 103.125%. Hence, the nanofiber modification with dendrimer-intercalated Mt and GluOx conjugation onto the formed nanocomposite structures was performed, and the PCL–CHIT/PAMAMG1–Mt/GluOx system was successfully developed for MSG detection.

show abstract

Section: Introductionmentioning

confidence: 99%

Development of an Enzymatic Biosensor Using Glutamate Oxidase on Organic–Inorganic-Structured, Electrospun Nanofiber-Modified Electrodes for Monosodium Glutamate Detection

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Overall, the enhanced surface area of nanofibers enhances their performance in electrochemical sensing, making them valuable tools for sensitive and selective detection. 87,88 Improved mass transport.-Nanofibers exhibit a unique combination of small diameter and porous structure, which contributes to their efficient mass transport properties in sensing applications. The small diameter of nanofibers reduces the diffusion distance that analytes and reactants need to traverse, facilitating faster transport to the sensing interface.…”

Section: Comparative Analysis Of the Advantages And Limitations Of Ea...mentioning

confidence: 99%

Review—Nanofibers: Empowering Electrochemical Sensors for Reliable Detection of Food and Environmental Toxins

Kogularasu

Lee

Chang-Chien

et al. 2023

J. Electrochem. Soc.

View full text Add to dashboard Cite

Electrochemical sensors have become indispensable tools for the detection and monitoring of food and environmental toxins. In recent years, nanofiber-based materials have emerged as promising candidates for constructing electrochemical sensors, offering a plethora of unique advantages, such as a large surface area, enhanced electron transfer kinetics, and the ability to immobilize diverse recognition elements. This comprehensive review sheds light on the pivotal role of nanofibers in advancing electrochemical sensors for the detection of food and environmental toxins. Various fabrication methods for nanofibers, including electrospinning, template-assisted synthesis, and self-assembly techniques, are elucidated in detail. It highlights the integration of nanofibers as electrode materials, nanocomposites, and immobilization platforms for recognition elements like enzymes, antibodies, and aptamers. The influence of nanofiber properties, encompassing morphology, composition, and surface modification, on the sensing performance is meticulously discussed. Moreover, a comprehensive overview of the latest advancements in nanofiber-based electrochemical sensors for detecting pesticide residues, heavy metals, mycotoxins, and other environmental contaminants is presented. We address challenges and future perspectives in the field, including scalability, cost-effectiveness, and seamless integration with wearable devices. This review illuminates new horizons for the development of sensitive, selective, and portable analytical devices, thereby significantly contributing to improved food safety and environmental monitoring.

show abstract

“…The selection of solvent determines the conformation of dissolved polymer chains, ease of generating fibers, and the evaporation rate of solvent. [70,71] Basically, the generation of nanofibers from ES system arises from the entanglement of the partially oriented, expanded conformation of polymer chains. The solvent with higher dissolvability and the capability to yield entanglement of polymer chains would be suitable for this application.…”

Section: Solventsmentioning

confidence: 99%

Piezoelectric Properties of Electrospun Polymer Nanofibers and Related Energy Harvesting Applications

Ren,

Shen,

Wang

2023

Macro Materials & Eng

View full text Add to dashboard Cite

Electrospinning (ES) methods that can produce piezoelectricity in polymer nanofibers have attracted tremendous research attention. These electrospun polymer nanofibers can be employed for sensors, energy harvesting, tissue engineering, and filtration applications. This paper reviews the performance of a variety of electrospun piezoelectric polymer nanofibers produced by different ES methods, including near‐field electrospinning and conventional far‐field electrospinning methods. Herein, it is described how the ES method can affect the piezoelectric properties of various polymer nanofibers, including poly(vinylidene difluorine), poly(vinylidene fluoride‐trifluoroethylene), nylon 11, poly(l‐lactic acid), and poly(α‐benzyl‐l‐glutamate). Due to the varied matrix structures of piezoelectric polymer nanofibers, the ES method may conduct variable effects on the piezoelectric properties of polymer nanofibers. After characterizations by X‐ray diffraction, Fourier transform infrared spectrum, dielectric spectra, and piezoelectric coefficient measurements, it is found that the piezoelectric properties of the polymer nanofibers can be significantly affected by the ES parameters. Most of previous review articles focus on the output performance of electrospun polymer nanofibers. A detailed description of how different ES methods affect the piezoelectricity of polymer nanofibers is still lacking. In this review paper, the basic principle behind ES methods and the way in which different ES methods affect the properties of polymer nanofibers are examined.

show abstract

Nanofiber‐Based Chemical Sensors

Cited by 10 publications

References 133 publications

Development of an Enzymatic Biosensor Using Glutamate Oxidase on Organic–Inorganic-Structured, Electrospun Nanofiber-Modified Electrodes for Monosodium Glutamate Detection

Development of an Enzymatic Biosensor Using Glutamate Oxidase on Organic–Inorganic-Structured, Electrospun Nanofiber-Modified Electrodes for Monosodium Glutamate Detection

Review—Nanofibers: Empowering Electrochemical Sensors for Reliable Detection of Food and Environmental Toxins

Piezoelectric Properties of Electrospun Polymer Nanofibers and Related Energy Harvesting Applications

Contact Info

Product

Resources

About