Ionophore- Nafion™ modified gold-coated electrospun polymeric fibers electrodes for determination of electrolytes

Aldea, Anca; Matei, Elena; Leote, Ricardo J.B.; Rău, Ileana; Enculescu, Ionuţ; Diculescu, Victor C.

doi:10.1016/j.electacta.2020.137239

Cited by 15 publications

(9 citation statements)

References 40 publications

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“…Magnetron sputtering has been widely used in the machinery, electronics, and ceramics fields for its advantages of high sputtering speed, low temperature of the substrate, stability, facial film formation, wide selectivity, easy control, large coating area, and strong adhesion. In recent years, functional flexible materials with the core of electrospinning nanofibers and the shell of metal nanoparticles − or semiconductors , were fabricated via magnetron sputtering. Bolbasov and co-workers reported a thin titanium-coated poly e-caprolactone (PCL) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) electrospinning nanofiber by simple magnetron sputtering (Figure a) .…”

Section: Overview and Design Of Electrospun Nanofibrous Hybrid Materialsmentioning

confidence: 99%

Functional Electrospun Nanofibrous Hybrid Materials for Colorimetric Sensors: A Review

Li,

Song,

et al. 2024

ACS Omega

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Electrospun nanofibrous hybrid materials have several advantageous characteristics, including easy preparation, high porosity, and a large specific surface area. Meanwhile, they can be more suitable for colorimetric detection in environmental and food areas than organic materials due to the advantages of inorganic nanomaterials, i.e., stability, low toxicity, and durability. In addition to being able to immobilize nanomaterials to avoid particle aggregation, electrospinning hybrid materials also have the advantages of high specific surface area and high porosity, which is beneficial for constructing colorimetric sensors. This review mainly summarizes the fabrication methods of electrospun nanofibrous hybrid materials and the application of electrospun nanofibrous hybrid material based colorimetric sensors. First, the preparation strategies of electrospun nanofibrous hybrid materials were discussed. Then, the applications of the obtained electrospun nanofibrous hybrid materials in the colorimetric sensors for environmental molecules in the gas and liquid phase were further investigated. Finally, this review looks forward to the development prospects and challenges of electrospun hybrid materials in practical applications of colorimetric sensors in order to support the application of colorimetric sensors in practical detection.

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Section: Overview and Design Of Electrospun Nanofibrous Hybrid Materialsmentioning

confidence: 99%

Functional Electrospun Nanofibrous Hybrid Materials for Colorimetric Sensors: A Review

Li,

Song,

et al. 2024

ACS Omega

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“…Flexible electrodes were constructed following the procedure previously described in a previous study. 21 Briefly, the Au/PMMA/PET electrodes were prepared by electrospinning a 10% PMMA solution in DMF with a flux of 0.5 mL h −1 under 15 kV applied potential on the spinneret. Submicronic PMMA fibers were collected on a copper frame for approximately 15 min at a distance of 15 cm from the spinneret.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Palladium-Coated Submicron Electrospun Polymeric Fibers with Immobilized Uricase for Uric Acid Determination in Body Fluids

Leote,

Crisan,

Matei

et al. 2024

ACS Appl. Polym. Mater.

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This work describes the development of a flexible uric acid (UA) biosensor based on palladium-coated submicrometer electrospun poly(methylmethacrylate) (PMMA) fibers metalized with gold and attached to polyethylene terephthalate substrate (Pd/Au/PMMA/PET). The morphological characterization conducted by scanning electron microscopy revealed nanoscale Pd dendritic structures. Electrochemical investigations in the absence and in the presence of redox probes demonstrated that these Pd nanostructures are responsible for a six-fold increase in the electroactive area and enhanced electron transfer kinetics when compared to the gold-coated electrospun fibers. The UA biosensor obtained by immobilizing the uricase enzyme (UrOx) onto the Pd/Au/PMMA/PET electrode surface, allowed UA detection with a sensitivity of 431 μA cm −2 mM −1 and a limit of detection of 12 μM. Investigation of the redox reactions of hydrogen peroxide (a product of the enzymatic oxidation of UA by UrOx) at the Pd/Au/PMMA/PET electrode demonstrated that the working principle of the biosensor is based on the reduction of PdO produced at the electrode surface during the spontaneous reduction of hydrogen peroxide on Pd. This allows a biosensor operating potential of −0.05 V (vs Ag/AgCl) with high selectivity. The UrOx/Pd/Au/PMMA/PET biosensor was applied for UA detection in body fluids (sweat, urine, and blood serum) with recovery values between 98 and 105%, which were validated by high-performance liquid chromatography analysis. The stability of the device was evaluated over a period of 3 months, retaining 78% of the initial sensitivity, and reproducibility with RSD = 4.9% was achieved. The analytical performance of the biosensor under harsh mechanical deformations and at physiological temperatures demonstrated the potential applications of the device to wearable sensing platforms.

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“…Efficient and accurate glucose detection methods are also critical for the preparation of glucose sensors. Methods of glucose detection in the NF-based glucose sensors mainly include optical and electrochemical detection ( Aldea et al, 2020 ). CGM is an invasive measurement that requires repeated trauma to the skin to obtain samples.…”

Section: Background Knowledge For Glucose Sensorsmentioning

confidence: 99%

Electrospun nanofiber-based glucose sensors for glucose detection

Zhang

Liu

et al. 2022

Front. Chem.

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Diabetes is a chronic, systemic metabolic disease that leads to multiple complications, even death. Meanwhile, the number of people with diabetes worldwide is increasing year by year. Sensors play an important role in the development of biomedical devices. The development of efficient, stable, and inexpensive glucose sensors for the continuous monitoring of blood glucose levels has received widespread attention because they can provide reliable data for diabetes prevention and diagnosis. Electrospun nanofibers are new kinds of functional nanocomposites that show incredible capabilities for high-level biosensing. This article reviews glucose sensors based on electrospun nanofibers. The principles of the glucose sensor, the types of glucose measurement, and the glucose detection methods are briefly discussed. The principle of electrospinning and its applications and advantages in glucose sensors are then introduced. This article provides a comprehensive summary of the applications and advantages of polymers and nanomaterials in electrospun nanofiber-based glucose sensors. The relevant applications and comparisons of enzymatic and non-enzymatic nanofiber-based glucose sensors are discussed in detail. The main advantages and disadvantages of glucose sensors based on electrospun nanofibers are evaluated, and some solutions are proposed. Finally, potential commercial development and improved methods for glucose sensors based on electrospinning nanofibers are discussed.

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Ionophore- Nafion™ modified gold-coated electrospun polymeric fibers electrodes for determination of electrolytes

Cited by 15 publications

References 40 publications

Functional Electrospun Nanofibrous Hybrid Materials for Colorimetric Sensors: A Review

Functional Electrospun Nanofibrous Hybrid Materials for Colorimetric Sensors: A Review

Palladium-Coated Submicron Electrospun Polymeric Fibers with Immobilized Uricase for Uric Acid Determination in Body Fluids

Electrospun nanofiber-based glucose sensors for glucose detection

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