Fluorographene sensing membrane in a light-addressable potentiometric sensor

Wei, Chen-Kang; Peng, Hsin-Yin; Tsai, Yu-Chin; Chen, Tsung-Cheng; Yang, Chia−Ming

doi:10.1016/j.ceramint.2019.01.244

Cited by 8 publications

(3 citation statements)

References 63 publications

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“…The pH sensitivity of the prepared samples showed an efficiency of 56.8 mV/pH. This reported study showed excellent pH-sensing performance for potentiometric sensors [23].…”

Section: Fluorographenementioning

confidence: 55%

A Review on Properties and Environmental Applications of Graphene and Its Derivative-Based Composites

et al. 2023

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Graphene-based materials have gained a lot of scientific interest in the research era of modern technology, which can be quite flexible. Graphene has become popular as a potential material for the manufacture of a wide range of technologies due to its remarkable electrical, mechanical, and optical traits. Due to these excellent characteristics, the derivatives of graphene can be functionalized in various applications including environmental, medical, electronic, defence applications, and many more. In this review paper, we discussed the different synthesis methods for the extraction of graphene and its derivatives. The different traits of graphene and its derivatives such as structural, mechanical, and optical were also discussed. An extensive literature review on the application of graphene-based composites is presented in this work. We also outlined graphene’s potential in the realm of environmental purification through different techniques such as filtration, adsorption, and photocatalysis. Lastly, the challenges and opportunities of graphene and its derivatives for advanced environmental applications were reported.

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“…The pH sensitivity of the prepared samples showed an efficiency of 56.8 mV/pH. This reported study showed excellent pH-sensing performance for potentiometric sensors [23].…”

Section: Fluorographenementioning

confidence: 55%

A Review on Properties and Environmental Applications of Graphene and Its Derivative-Based Composites

et al. 2023

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“…Studies on the development and improvement of light-addressing technologies as well as their applications are accelerating fast and have extended into diverse directions in recent years. Various materials, such as InGaN [77], SnO x [78], indium gallium zinc oxide (IGZO) [79,80], fullerene (C 60 ) [81], layer-by-layer assembly of carbon dots and liquid exfoliated graphene [82], benzodithiophene-based polymer PTB7-Th/fullerene PC 71 BM [83], and nitrogen-doped graphene quantum dots [84], have been tested as a photosensitive active layer to replace silicon, as well as fluorographene [85] as a sensing membrane. Optimization of the sensor structure has also been studied to obtain a higher spatial resolution [86][87][88][89][90].…”

Section: Discussionmentioning

confidence: 99%

Field-Effect Sensors Combined with the Scanned Light Pulse Technique: From Artificial Olfactory Images to Chemical Imaging Technologies

Yoshinobu,

Miyamoto,

Wagner

et al. 2024

Chemosensors

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The artificial olfactory image was proposed by Lundström et al. in 1991 as a new strategy for an electronic nose system which generated a two-dimensional mapping to be interpreted as a fingerprint of the detected gas species. The potential distribution generated by the catalytic metals integrated into a semiconductor field-effect structure was read as a photocurrent signal generated by scanning light pulses. The impact of the proposed technology spread beyond gas sensing, inspiring the development of various imaging modalities based on the light addressing of field-effect structures to obtain spatial maps of pH distribution, ions, molecules, and impedance, and these modalities have been applied in both biological and non-biological systems. These light-addressing technologies have been further developed to realize the position control of a faradaic current on the electrode surface for localized electrochemical reactions and amperometric measurements, as well as the actuation of liquids in microfluidic devices.

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“…However, the zero band gap of graphene poses a challenge in the design of devices with on and off switching of electrical currents . The electronic band gap is the energy difference between the valence and conduction bands in a semiconductor, which manifests an inverse relationship to the carrier mobility, and hence an increase in the band gap of graphene can modulate its carrier mobility and improve its applicability in sensor platforms. , In addition, covalent chemistry facilitates an easy and effective route to band-gap structure modulation in graphene. − Tuning the electronic energy gap by band gap engineering is a growing area of materials chemistry, , and it is found that, in a graphene-like platform, such tunability can be achieved even with single-atom-level doping. − …”

Section: Introductionmentioning

confidence: 99%

Structural and Electronic Transport Properties of Fluorographene Directly Grown on Silicates for Possible Biosensor Applications

Sharma

Asmara

Sahoo

et al. 2020

ACS Appl. Nano Mater.

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Fluorographene (FG) ultrathin films are directly grown on flexible and nonflexible insulating silicate substrates and characterized in terms of their structural and electronic properties. FG is identified as an in-plane heterostructure consisting of sp 2 and sp 3 carbon domains. Solid-state 19 F NMR shows that fluorine is mainly localized in spaces adjacent to sp 2 carbon domains, which can be explained by a more uniform fluorine distribution in the boundaries between small sp 2 and sp 3 domains, rather than by an accumulation of fluorine in large sp 3 patches, and which is supported by Raman spectroscopy. The fluorine doping is further confirmed by spectroscopic ellipsometry studies, where it showed a band gap of 1.2 eV for thin-film FG, which is found to be consistent with density-functional-theory-based calculations for graphene layers doped with similar amounts of fluorine. Furthermore, this semiconducting FG layer grown with a large surface area has been identified as an ambipolar material from gate-controlled transport measurements, with holes being the majority of charge carriers. The transport properties of thin-film FG resemble those of reduced graphene oxide, another functionalized graphene derivative, with an Arrhenius-type temperature dependence of the resistance at high temperatures. This study opens up the possibilities of atomic-layer-based electronic circuitries and biosensors, where FG can be used as an active layer or dielectric support by tuning its fluorine content to the requisite level.

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Fluorographene sensing membrane in a light-addressable potentiometric sensor

Cited by 8 publications

References 63 publications

A Review on Properties and Environmental Applications of Graphene and Its Derivative-Based Composites

A Review on Properties and Environmental Applications of Graphene and Its Derivative-Based Composites

Field-Effect Sensors Combined with the Scanned Light Pulse Technique: From Artificial Olfactory Images to Chemical Imaging Technologies

Structural and Electronic Transport Properties of Fluorographene Directly Grown on Silicates for Possible Biosensor Applications

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