Investigations of SAW Structures with Oxide Graphene Layer to Detection of Selected Gases

Drewniak, Sabina; Pustelny, T.; Setkiewicz, M.; Maciak, E.; Urbańczyk, M.; Procek, Marcin; Opilski, Z.; Jagiełło, Joanna; Lipińska, L.

doi:10.12693/aphyspola.124.402

Cited by 9 publications

(4 citation statements)

References 19 publications

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“…GrO based sensors fabricated by dielectrophoresis are used to sense hydrogen gas [93]. GrO with acoustic wave propagated surface is used to detect H 2 and NO 2 in the atmosphere [94,95]. Dense functional groups of oxygen in GrO maintain its sensitivity even in harsh conditions such as high humidity and strong acidic or basic conditions and also sense harsh volatile content like chloroform [96].…”

Section: Graphene-sensing Performancementioning

confidence: 99%

Graphene and g-C3N4-Based Gas Sensors

Kotbi

Imran

Kaja

et al. 2022

Journal of Nanotechnology

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The efficient monitoring of the environment is currently gaining a continuous growing interest in view of finding solutions for the global pollution issues and their associated climate change. In this sense, two-dimensional (2D) materials appear as one of highly attractive routes for the development of efficient sensing devices due, in particular, to the interesting blend of their superlative properties. For instance, graphene (Gr) and graphitic carbon nitride g-C3N4 (g-CN) have specifically attracted great attention in several domains of sensing applications owing to their excellent electronic and physical-chemical properties. Despite the high potential they offer in the development and fabrication of high-performance gas-sensing devices, an exhaustive comparison between Gr and g-CN is not well established yet regarding their electronic properties and their sensing performances such as sensitivity and selectivity. Hence, this work aims at providing a state-of-the-art overview of the latest experimental advances in the fabrication, characterization, development, and implementation of these 2D materials in gas-sensing applications. Then, the reported results are compared to our numerical simulations using density functional theory carried out on the interactions of Gr and g-CN with some selected hazardous gases’ molecules such as NO2, CO2, and HF. Our findings conform with the superior performances of the g-CN regarding HF detection, while both g-CN and Gr show comparable detection performances for the remaining considered gases. This allows suggesting an outlook regarding the future use of these 2D materials as high-performance gas sensors.

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Section: Graphene-sensing Performancementioning

confidence: 99%

Graphene and g-C3N4-Based Gas Sensors

Kotbi

Imran

Kaja

et al. 2022

Journal of Nanotechnology

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“…Some 2D materials are also being investigated for their acoustoelectric performances both theoretically and experimentally [388,389]. However, a few papers have investigated the gas sensing properties of GSAWs using functionalised graphenes and (r)GO with gases such as CO [390], CO 2 [381] and NO 2 [391,392]. Except for CO 2 , the limits of detection are still above the values of interest as suggested in table 1, however as this technology is better understood via the fundamental studies, the devices are expected to be an exciting area of environmental gas detection.…”

Section: Microelectromechanical Systemsmentioning

confidence: 99%

Frontiers of graphene and 2D material-based gas sensors for environmental monitoring

et al. 2020

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The World Health Organization reported that 4.2 million deaths every year were a direct result of exposure to ambient air pollution (NO 2 , SO 2 , NH 3 , CO 2 , CO, CH 4 ). There is a well-demonstrated global need for high sensitivity, low cost and low energy consumption miniaturised gas sensors to be deployed in a dense network and to be used in an attempt to pinpoint and avoid high pollution hot spots. The high sensitivity of graphene to the local environment has shown to be highly advantageous in sensing applications, where ultralow concentrations of adsorbed molecules induce a significant response on the electronic properties of graphene. This is commonly attributed to the π electrons of graphene, being directly exposed to the surrounding environment. The unique electronic structure makes graphene the 'ultimate' sensing material for applications in environmental monitoring and air quality. In this review, we present the frontiers of graphene-based sensors considering both electrical and optical methods of detection and discuss the topical progress in an attempt to establish whether graphene can be considered as the ideal sensing material. We pay special attention to the optimization of the sensor performance, using various graphene hybrids and doping mechanisms. Furthermore, we present the recent developments in other 2D material-based sensors that have followed in the wake of graphene. We discuss the benchmarked parameters of graphene sensors, such as sensitivity, selectivity, response/recovery time and detection limit, and compare them with other 2D materials as well as existing state-of-the-art sensors currently being used in the field. We also perform a brief market analyses for the environmental sensing industry as well as provide a Strengths-Weaknesses-Opportunities-Threats analysis of graphene technology for environmental sensing.

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“…Many nanostructures are investigated in terms of their application in gas sensors. The graphene and its compounds, such as the graphene oxide and the reduced graphene oxide may be served as an example [6][7][8]. Recently, also nanostructures of wide-gap semiconductors are intensively studied in order to apply them in the sensors of gases and vapours [9].…”

Section: Introductionmentioning

confidence: 99%

Studies of changes in electrical resistance of zinc oxide nanostructures under the influence of variable gaseous environments

Procek

Pustelny

Stolarczyk

2014

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. The paper deals with the investigations concerning the influence of the changing gas environment on electrical resistance of zinc oxide (ZnO) nanostructures. The investigated structures are wide-gap semiconductors with the morphology of ZnO flower-shaped agglomerates of nanostructures. The resistance changes of these nanostructures were tested under the influence of various gases such as nitrogen dioxide (NO2), hydrogen (H2), ammonia (NH3) and also of humidity changes of carrier gases. To clarify the mechanisms of physicochemical processes in ZnO nanostructures during their interaction with gaseous environments, investigations were performed in two different carrier gases, viz. in synthetic air and in nitrogen. The study was carried out at a structure temperature of 200• C.

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Investigations of SAW Structures with Oxide Graphene Layer to Detection of Selected Gases

Cited by 9 publications

References 19 publications

Graphene and g-C3N4-Based Gas Sensors

Graphene and g-C3N4-Based Gas Sensors

Frontiers of graphene and 2D material-based gas sensors for environmental monitoring

Studies of changes in electrical resistance of zinc oxide nanostructures under the influence of variable gaseous environments

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