Reduced graphene oxide filled cellulose films for flexible temperature sensor application

Sadasivuni, Kishor Kumar; Kafy, Abdullahil; Kim, Hyun-Chan; Ko, Hyun‐U; Mun, Seongcheol; Kim, Jaehwan

doi:10.1016/j.synthmet.2015.05.018

Cited by 131 publications

(82 citation statements)

References 49 publications

(68 reference statements)

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“…It is of extreme importance to design a gas sensor possessing good sensitivity and selectivity for detecting such gases. Various researchers have reported metal oxides like SnO 2 , ZnO, TiO 2 , Fe 2 O 3 , and WO 3 as better sensing materials. The biggest disadvantage of metal oxides is long term stability.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Graphene Oxide (GO) and Reduced Graphene Oxide (rGO) for Gas Sensing Application

Sharma

Jain

et al. 2017

Macromolecular Symposia

358

139

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In the present investigation, GO was prepared by exfoliation of graphite using modified Hummer's method and then reduced using hydrazine hydrate (reducing agent) to produce rGO. XRD, FESEM, Raman, FTIR spectrophotometer and TGA were used for characterization of GO and rGO. XRD images reveal crystalline structure for both GO and rGO. The d‐spacing is observed to be reduced for rGO as compared to that for GO because of removal of oxygen containing functional groups. Raman excitation peaks were obtained for two laser wavelengths 532 and 785 nm. Ratio of intensities of D and G bands (ID/IG) increase for rGO due to increase in order by reduction, implying restoration of the p‐conjugation. The bands are narrower for rGO.TGA thermograms show a higher overall loss of weight for GO in the temperature range 0–1000 °C under N2 flow. Intensity of FTIR peaks of oxide, hydroxyl and alkoxy groups decreases significantly on reduction. FESEM image shows more corrugated surface of rGO as compared to GO. It is expected that this investigation would be useful to develop GO/rGO based gas sensors to detect minute concentration of gases.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Graphene Oxide (GO) and Reduced Graphene Oxide (rGO) for Gas Sensing Application

Sharma

Jain

et al. 2017

Macromolecular Symposia

358

139

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“…34 Several reports have been made on the enhancement of the dielectric responses of the cellulose polymer with graphene-based llers. 6,14,15 The dielectric properties of cellulose/GO composites were studied by Kafy et al 6 35 However, all the previous reported studies investigated the dielectric properties of the materials at the lower frequency regions. Generally, the dielectric constant increases with frequency-lowering, due to the space charge contribution.…”

Section: Dielectric Studiesmentioning

confidence: 99%

Mechanically strong, flexible and thermally stable graphene oxide/nanocellulosic films with enhanced dielectric properties

et al. 2016

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“…(4,(6)(7)(8) Recently, carbonbased materials, such as graphene and carbon nanotubes, have been explored as gas sensing materials. (4,9) Sensing materials have important roles in the molecular-level detection and distinction of contaminants in environmental processes. (10) The need to understand the underlying mechanism becomes paramount for the development of sensing materials with focus on the sensor's response speed, selectivity, sensitivity, and stability.…”

Section: Introductionmentioning

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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Reduced graphene oxide filled cellulose films for flexible temperature sensor application

Cited by 131 publications

References 49 publications

Synthesis and Characterization of Graphene Oxide (GO) and Reduced Graphene Oxide (rGO) for Gas Sensing Application

Synthesis and Characterization of Graphene Oxide (GO) and Reduced Graphene Oxide (rGO) for Gas Sensing Application

Mechanically strong, flexible and thermally stable graphene oxide/nanocellulosic films with enhanced dielectric properties

Graphene-based Materials in Gas Sensor Applications: A Review

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