Direct growth of large-area graphene films onto oxygen plasma-etched quartz for nitrogen dioxide gas detection

Yang, Haifeng; Huang, Lei; Chang, Quanhong; J, Z; Xu, Siyun; Chen, Q; Shen, Weixiang

doi:10.1088/0022-3727/47/31/315101

Cited by 10 publications

(3 citation statements)

References 31 publications

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“…Sensitivity of the sensor increases with increasing NO 2 concentration (from 6 to 50% when the concentration of NO 2 increases from 5 to 500 ppm) with a good cycle stability (inset of Figure d), and the results are comparable to other research results using raw graphene for gas sensing. ,, Meanwhile, the response time (defined as the duration from the time when NO 2 was injected into the testing chamber to the time when the current reaches to 50% of the current peak of the testing cycle) of our sensor is at the same level with other published literature (Figure S18). ,,,, It is worth noting that the gas channel is not perfectly uniform due to the unevenness of the TiC 0.5 (Cu) layers (Figure d). However, NO 2 molecules are in the subnanometer scales, which are much smaller than the changes of micron gas channels, thus making a little effect for the gas sensing ability.…”

Section: Resultssupporting

confidence: 87%

Tailorable Metal–Ceramic (Cu-TiC_0.5) Layered Electrode with High Mechanical Property and Conductivity

Duan

et al. 2019

ACS Appl. Mater. Interfaces

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Two-dimensional materials have been extensively investigated in the fields of electrochemical sensors, field-effect transistors, and other electronic devices due to their large surface areas, high compatibility with device integration, and so on. Conventional electrodes, such as precious metal layers that are deposited on polymer or silicon wafers, have gradually revealed increasing difficulties in adapting to various device structures, especially for two-dimensional materials, which prefer high exposure of surface atoms. Here, we demonstrate a tailorable metal–ceramic (Cu-TiC0.5) layered structure as novel electrodes with high mechanical property and conductivity and fabricate a highly sensitive gas sensor with graphene lying on this proposed electrodes. The Cu-TiC0.5 layered structure exhibits remarkably high tensile yield strength and compressive yield strength, which increase 7 and 8 times than those of the pure copper, respectively. Meanwhile, excellent flexibility and conductivity could also be obtained with the further thinning of the Cu-TiC0.5 layered composite, which shows its potential applications in flexible electronics. Finally, we demonstrated that a graphene-based gas sensor fabricated on tailored metal–ceramic electrodes was ultrasensitive and robust, which benefits from the good thermal conductivity and peculiar gas channels etched on the surface of copper alloy electrodes.

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Section: Resultssupporting

confidence: 87%

Tailorable Metal–Ceramic (Cu-TiC_0.5) Layered Electrode with High Mechanical Property and Conductivity

Duan

et al. 2019

ACS Appl. Mater. Interfaces

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“…The Raman spectra confirm that multilayered graphene sheets were formed on the paper by the mechanical abrasion of the pencil [45]. In addition, higher-intensity D and G peaks were observed in the Raman spectrum of the graphene sheet containing the Pd NPs compared to the spectrum of the graphene sheet alone.…”

Section: Resultsmentioning

confidence: 66%

Hydrogen Sensing Using Paper Sensors with Pencil Marks Decorated with Palladium

Lee

Baek

Nahm

2019

Sensors

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Paper-based sensors fabricated using the pencil-on-paper method are expected to find wide usage in many fields owing to their low cost and high reproducibility. Here, hydrogen (H2) detection was realized by applying palladium (Pd) nanoparticles (NPs) to electronic circuits printed on paper using a metal mask and a pencil. We confirmed that multilayered graphene was produced by the pencil, and then characterized Pd NPs were added to the pencil marks. To evaluate the gas-sensing ability of the sensor, its sensitivities and reaction rates in the presence and absence of H2 were measured. In addition, sensing tests performed over a wide range of H2 concentrations confirmed that the sensor had a detection limit as low as 1 ppm. Furthermore, the sensor reacted within approximately 50 s at all H2 concentrations tested. The recovery time of the sensor was 32 s at 1 ppm and 78 s at 1000 ppm. Sensing tests were also performed using Pd NPs of different sizes to elucidate the relationship between the sensing rate and catalyst size. The experimental results confirmed the possibility of fabricating paper-based gas sensors with a superior sensing capability and response rate.

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“…14,15) Gas sensors based on graphene have been demonstrated to be sensitive to oxidizing gases on the order of parts per billion (ppb) at room temperature. 16,17) In addition, Hong et al 18) demonstrated the fabrication of a gas sensor by the functionalization of poly(methyl methacrylate) (PMMA) and palladium nanoparticles (Pd NPs) with singlelayer graphene (SLG) for selectivity to hydrogen gas. Their results showed that the PMMA layer acts as a gas-selective filtration layer.…”

Section: Introductionmentioning

confidence: 99%

Graphene and poly(methyl methacrylate) composite laminates on flexible substrates for volatile organic compound detection

Rattanabut

Wongwiriyapan

Muangrat

et al. 2018

Jpn. J. Appl. Phys.

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In this paper, we present a gas sensor for volatile organic compound (VOC) detection based on graphene and poly(methyl methacrylate) (GR/PMMA) composite laminates fabricated using CVD-grown graphene. Graphene was transferred to a poly(ethylene terephthalate) (PET) substrate by PMMA-supported wet transfer process without PMMA removal in order to achieve the deposition of GR/PMMA composite laminates on PET. The GR/PMMA and graphene sensors show completely different sensitivities to VOC vapors. The GR/PMMA and graphene sensors showed the highest sensitivities to dichloromethane (DCM). The response of the GR/PMMA sensor to DCM was 3 times higher than that of the graphene sensor but the GR/PMMA sensor hardly responded to acetone, chloroform, or benzene. The sensing mechanism of the graphene sensor can be based on the dielectric constant of VOCs, the size of VOC molecule, and electron hopping effects on defect graphene, while that of the GR/PMMA sensor can be explained in terms of the polymer swelling owing to the Hansen solubility parameter.

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Direct growth of large-area graphene films onto oxygen plasma-etched quartz for nitrogen dioxide gas detection

Cited by 10 publications

References 31 publications

Tailorable Metal–Ceramic (Cu-TiC_0.5) Layered Electrode with High Mechanical Property and Conductivity

Tailorable Metal–Ceramic (Cu-TiC_0.5) Layered Electrode with High Mechanical Property and Conductivity

Hydrogen Sensing Using Paper Sensors with Pencil Marks Decorated with Palladium

Graphene and poly(methyl methacrylate) composite laminates on flexible substrates for volatile organic compound detection

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Direct growth of large-area graphene films onto oxygen plasma-etched quartz for nitrogen dioxide gas detection

Cited by 10 publications

References 31 publications

Tailorable Metal–Ceramic (Cu-TiC0.5) Layered Electrode with High Mechanical Property and Conductivity

Tailorable Metal–Ceramic (Cu-TiC0.5) Layered Electrode with High Mechanical Property and Conductivity

Hydrogen Sensing Using Paper Sensors with Pencil Marks Decorated with Palladium

Graphene and poly(methyl methacrylate) composite laminates on flexible substrates for volatile organic compound detection

Contact Info

Product

Resources

About

Tailorable Metal–Ceramic (Cu-TiC_0.5) Layered Electrode with High Mechanical Property and Conductivity

Tailorable Metal–Ceramic (Cu-TiC_0.5) Layered Electrode with High Mechanical Property and Conductivity