Acid-treated carbon nanotubes/polypyrrole/fluorine-doped tin oxide electrodes with high sensitivity for saliva glucose sensing

Huang, Guan-Kai; Gupta, Shivam; Lee, Chi-Young; Tai, Nyan‐Hwa

doi:10.1016/j.diamond.2022.109385

Cited by 9 publications

(3 citation statements)

References 39 publications

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“…4a, the cathodic current response decreases with an increase in glucose concentration, consistent with our previous works. 44 All GO x /Fc-Chit/CNTs/SPEs with different ferrocene-to-chitosan ratios exhibit a reliable linear detection range of glucose concentration from 20 to 800 mM (Fig. S6 †), covering the salivary glucose levels from 94 to 456 mM for healthy individuals and patients with diabetes, 45 respectively.…”

Section: Resultsmentioning

confidence: 99%

Dipole moment as the underlying mechanism for enhancing the immobilization of glucose oxidase by ferrocene-chitosan for superior specificity non-invasive glucose sensing

Ting¹,

Lin²,

Gupta³

et al. 2023

Nanoscale Adv.

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Section: Resultsmentioning

confidence: 99%

Dipole moment as the underlying mechanism for enhancing the immobilization of glucose oxidase by ferrocene-chitosan for superior specificity non-invasive glucose sensing

Ting¹,

Lin²,

Gupta³

et al. 2023

Nanoscale Adv.

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“…Polypyrrole (PPy), a common constituent of biosensors, has the advantage of facile modification and enhanced electrode selectivity and stability [ 71 ]. Huang et al [ 72 ] fabricated acid-CNT/PPy/fluorine doped tin oxide (FTO) electrodes for non-invasive saliva glucose sensors, simply combining PPy and CNTs to achieve synergistic effects. The study used a chemical polymerisation method to deposit PPy on an FTO conductive glass substrate, which was then modified with acid-CNTs by drop-casting to fabricate acid-CNTs/PPy/FTO electrodes.…”

Section: Recent Developments In Cnt-based Enzymatic Glucose Sensorsmentioning

confidence: 99%

Carbon nanotubes: a powerful bridge for conductivity and flexibility in electrochemical glucose sensors

Yuwen,

Shu,

Zou

et al. 2023

J Nanobiotechnol

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The utilization of nanomaterials in the biosensor field has garnered substantial attention in recent years. Initially, the emphasis was on enhancing the sensor current rather than material interactions. However, carbon nanotubes (CNTs) have gained prominence in glucose sensors due to their high aspect ratio, remarkable chemical stability, and notable optical and electronic attributes. The diverse nanostructures and metal surface designs of CNTs, coupled with their exceptional physical and chemical properties, have led to diverse applications in electrochemical glucose sensor research. Substantial progress has been achieved, particularly in constructing flexible interfaces based on CNTs. This review focuses on CNT-based sensor design, manufacturing advancements, material synergy effects, and minimally invasive/noninvasive glucose monitoring devices. The review also discusses the trend toward simultaneous detection of multiple markers in glucose sensors and the pivotal role played by CNTs in this trend. Furthermore, the latest applications of CNTs in electrochemical glucose sensors are explored, accompanied by an overview of the current status, challenges, and future prospects of CNT-based sensors and their potential applications.

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“…The bandgap is reduced and the oxidation potential of holes is improved by doping the material with fluorine atoms [24,25]. Tin oxide films doped with fluorine and indium [26] are used in photocatalysis [27][28][29], perovskite solar cells [30][31][32], electrochemistry [33][34][35], and biosensors [36][37][38]. Great success in obtaining films of tin oxide doped with fluorine has been achieved using the sol-gel method.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Lyophobicity and Lyophilicity of Film-Forming Systems on the Properties of Tin Oxide Films

Dmitriyeva,

Lebedev,

Bondar

et al. 2023

Coatings

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In this work, the effects of lyophobicity and lyophilicity of film-forming systems on the properties of thin nanostructured films was studied. Systematic series of experiments were carried out with lyophilic film-forming systems: SnCl4/EtOH, SnCl4/EtOH/NH4F, SnCl4/EtOH/NH4OH and lyophobic systems: SnO2/EtOH and SnO2/EtOH/NH4F. Film growth mechanisms are determined depending on the type of film-forming system. The surface of the films was studied using a scanning electron microscope and an optical microscope. The spectrophotometric method is used to study the transmission spectra and the extinction coefficient. The surface resistance of the films was determined using the four-probe method. The quality factor and specific conductivity of the films are calculated. It was found that the addition of a fluorinating agent (NH4F) to a film-forming system containing SnO2 in the form of a dispersed phase does not lead to an increase in the specific conductivity of the films. X-ray diffraction analysis proved the incorporation of fluorine ions into the structure of the film obtained from the SnCl4/EtOH/NH4F system by the presence of SnOF2 peaks. In films obtained from SnO2/EtOH/NH4F systems, there are no SnOF2 peaks. In this case, ammonium fluoride crystallizes as a separate phase and decomposes into volatile compounds.

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Acid-treated carbon nanotubes/polypyrrole/fluorine-doped tin oxide electrodes with high sensitivity for saliva glucose sensing

Cited by 9 publications

References 39 publications

Dipole moment as the underlying mechanism for enhancing the immobilization of glucose oxidase by ferrocene-chitosan for superior specificity non-invasive glucose sensing

Dipole moment as the underlying mechanism for enhancing the immobilization of glucose oxidase by ferrocene-chitosan for superior specificity non-invasive glucose sensing

Carbon nanotubes: a powerful bridge for conductivity and flexibility in electrochemical glucose sensors

The Influence of Lyophobicity and Lyophilicity of Film-Forming Systems on the Properties of Tin Oxide Films

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