Tuning the electrical properties of graphene oxide by nitrogen ion implantation: Implication for gas sensing

Minitha, Cherukutty Ramakrishnan; Nivedita, Lalitha Raveendran; Asokan, K.; Kumar, Ramasamy Thangavelu Rajendra

doi:10.1016/j.nimb.2018.12.044

Cited by 9 publications

(9 citation statements)

References 20 publications

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“…Several works have synthesized GO and reduced graphene oxide (rGO) using traditional methods 26 and recently, it was synthetized via a FSTD method, employing RH biomass as source material 8,27,29 ; furthermore, their morphological, compositional, vibrational, electrical, and physicochemical properties have been studied 4,8,[30][31][32][33] and the effect of T CA on these physical properties has been reported 21,34,35 , in addition to their possible technological applications 4,[36][37][38] . Moreover, some studies revealed that physical properties in GO can be influenced by tuning oxide concentrations [39][40][41][42][43] . Then, different experiments were carried out to measure the electrical response of GO via I-V curves method 43,44 , showing that the temperature level of the medium in which the experiment is performed and the reduction or synthesis temperature influences electrical conductivity and the OC 39,40,43 .…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, some studies revealed that physical properties in GO can be influenced by tuning oxide concentrations [39][40][41][42][43] . Then, different experiments were carried out to measure the electrical response of GO via I-V curves method 43,44 , showing that the temperature level of the medium in which the experiment is performed and the reduction or synthesis temperature influences electrical conductivity and the OC 39,40,43 . The vibrational characteristics were analyzed via Raman; the Raman spectrum of GO shows general features around 1360, 1600, and 2700 𝑐𝑚 −1 , which correlate with D, G, and 2D bands, respectively 4,8,29,40 .…”

Section: Introductionmentioning

confidence: 99%

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Basic physical properties and potential application of graphene oxide fibers synthesized from rice husk

Castro-Ladino

Cuy-Hoyos

Prías‐Barragán

2023

Preprint

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The synthesis method and correlation between compositional, vibrational, and electrical properties in graphene oxide fibers (GOF) are presented and discussed here, and a potential application through the development of a heater device based on GOF. The GOF samples were synthesized from rice husk (RH), via a thermal decomposition method, employing an automated pyrolysis system with a controlled nitrogen atmosphere, varying carbonization temperature (TCA) from 773 to 1273 K. The compositional analysis shows peaks in XPS spectrum associated with C1s and O1s, with presence of hydroxyl and epoxy bridges; the oxide concentration (OC) of samples varied from 0.21 to 0.28, influenced by TCA. The GOF samples exhibits morphology of fibers, vibrational characteristics, typical of graphene oxide multilayers and electrical behavior that scale with OC. The electrical response shows that OC decreases and increases electrical conductivity at the polycrystalline phase, possibly attributed to the desorption of some oxides and organic compounds. Likewise, the physical correlations between OC and vibrational response, revealed that decreased OC and increases in boundary defects density and decreased crystal size, as a consequence of thermal decomposition processes. The correlation between OC and physical properties suggests that by controlling the OC in GOF, it was possible to modify vibrational and electrical properties of great interest in fabrication of advanced electronics; consequently, we show a potential application of GOF samples developing an electrically controlled heater device.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Basic physical properties and potential application of graphene oxide fibers synthesized from rice husk

Castro-Ladino

Cuy-Hoyos

Prías‐Barragán

2023

Preprint

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“…Hence, there is an urge to develop highly sensitive, selective, fast response and cost-effective sensor towards triethylamine operating at room temperature. Minitha et al have used nitrogen ion implanted GO towards methanol detection at room temperature [14]. In this work, we have investigated the selective interaction of triethylamine on GO in comparison with other VOCs such as ethanol, acetone, and n-hexane using scanning Kelvin probe (SKP) system.…”

Section: Introductionmentioning

confidence: 99%

Graphene Oxide based Gas Sensor for Triethylamine Detection at Room Temperature

Abbas

Marappan

Chidabaram

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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We have developed a graphene oxide (GO) based sensor to detect triethylamine at room temperature. GO is synthesized by modified Hummer’s method and spin-coated on fluorine-doped tin oxide (FTO) substrate. Structural and morphological characterizations of GO are done by XRD and FE-SEM. Sheet-like morphology of GO is observed in FESEM images. The existence of defects is confirmed by Raman spectra with a ID/IG ratio ∼ 0.94. Gas adsorption studies are carried out using scanning Kelvin probe system with various volatile organic compounds (VOCs) like ethanol, acetone, n-hexane and triethylamine. Among them, GO shows more contact potential difference (CPD) response towards triethylamine. Then, a gas sensor device is fabricated using GO and its electrical characterization is done by I-V measurements. The device shows ohmic behavior with a resistance of ∼ 50 MΩ. Thereafter, the sensor is exposed to triethylamine from 19 to 151 ppm and the sensitivity is 1.39 x 10−4 ppm−1. Interestingly, a fast response time of 11 sec is achieved at room temperature.

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“…Moreover, some studies revealed that physical properties in GO can be in uenced by tuning oxide concentrations [45][46][47][48][49][50] . Then, different experiments were carried out to measure the electrical response of GO via I-V curves method [50][51][52] , showing that the temperature level of the medium in which the experiment is performed and the reduction or synthesis temperature in uences electrical conductivity and the OC 45,46,50,53 . The vibrational characteristics were analyzed via Raman; the Raman spectrum of GO shows general features around 1360, 1600, and , which correlate with D, G, and 2D bands, respectively 5,10,33,46 .…”

mentioning

confidence: 99%

“…Also, rst-stage thermal decomposition (FSTD) has been employed to synthesize GO from biomass precursors, like bamboo and RH 5,30 .Several works have synthesized GO and reduced graphene oxide (rGO) using traditional methods 28,31,32 and recently, it was synthetized via a FSTD method, employing RH biomass as source material 10,29,33,34 ; furthermore, their morphological, compositional, vibrational, electrical, and physicochemical properties have been studied 5,10,35−39 and the effect of T CA on these physical properties has been reported 23,40,41 , in addition to their possible technological applications 5,42−44 . Moreover, some studies revealed that physical properties in GO can be in uenced by tuning oxide concentrations [45][46][47][48][49][50] . Then, different experiments were carried out to measure the electrical response of GO via I-V curves method [50][51][52] , showing that the temperature level of the medium in which the experiment is performed and the reduction or synthesis temperature in uences electrical conductivity and the OC 45,46,50,53 .…”

mentioning

confidence: 99%

Graphene Oxide Fibers: Synthesis Method and Correlation among Compositional, Vibrational, and Electrical Properties

Castro-Ladino

Prías‐Barragán

2022

Preprint

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The synthesis method and correlation among compositional, vibrational, and electrical properties in graphene oxide fibers (GOF) are presented and discussed here. The GOF samples were synthesized from rice husk (RH) as source material, via a thermal decomposition method employing an automated pyrolysis system with a controlled nitrogen atmosphere, varying carbonization temperature (TCA) from 773 to 1273 K. The samples were characterized through scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and current-voltage curves at four points of collinear electrical contacts. Oxide concentration (OC) of samples varied from 0.21 (at TCA = 1273 K) to 0.28 (TCA = 773 K), influenced by TCA. The GOF samples exhibited fiber morphology composed of porous structures with sizes between 5 and 30 μm; peaks in the XPS spectrum at ≈ 538 and 284 eV were associated with O1s and C1s, respectively. Analysis of the results corroborates the graphite oxide vibrational behavior with crystal sizes varying from 3.52 to 4.88 nm, and boundary defects density of 3.12-3.6 x 10-4 cm-2, as expected. The electrical response shows that OC decreases and increases electrical conductivity from 4.66 x 10-2 to 4.45 S/m at the polycrystalline phase, possibly attributed to the desorption of some oxides and organic compounds. Likewise, the physical correlations between OC and vibrational response revealed that decreased OC generates an increase in boundary defects density and decreased crystal size, as a consequence of thermal decomposition processes. The correlations between electrical and vibrational properties revealed that increased electrical conductivity increases defects density and decreases crystal size in GOF samples, possibly attributed to hydroxyl and epoxy bridges getting carbons atoms out of plane and modifying the band-gap energy (Eg) and graphitic structure. These results suggest that by controlling the TCA and OC in the synthesis of GOF samples, modification of vibrational and electrical properties, of great interest in the electronic development of sensors and devices, has been made possible.

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Tuning the electrical properties of graphene oxide by nitrogen ion implantation: Implication for gas sensing

Cited by 9 publications

References 20 publications

Basic physical properties and potential application of graphene oxide fibers synthesized from rice husk

Basic physical properties and potential application of graphene oxide fibers synthesized from rice husk

Graphene Oxide based Gas Sensor for Triethylamine Detection at Room Temperature

Graphene Oxide Fibers: Synthesis Method and Correlation among Compositional, Vibrational, and Electrical Properties

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