Hydrogen sulfide gas sensor based on copper/graphene oxide coated multi-node thin-core fiber interferometer

Liu, Shaodian; Yang, Xiaozhan; Feng, Wenlin

doi:10.1364/ao.58.002152

Cited by 17 publications

(11 citation statements)

References 26 publications

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“…Charge transfer occurs between graphene and adsorbed molecules, which changes the carrier density in graphene and therefore the resistance of graphene . Due to its high carrier mobility and density and low intrinsic noise characteristics, graphene is widely studied to detect various dangerous gas molecules, such as nitrogen dioxide (NO 2 ), , ammonia (NH 3 ), , hydrogen (H 2 ), , hydrogen sulfide (H 2 S), , and sulfur dioxide (SO 2 ). , The gas molecules can simply be treated as dopants, and the resistance of graphene can be regulated by tuning the properties of gas molecules, depending on whether they are electron donors or receptors. , For example, the NO 2 molecule is an electron acceptor (p-type), which can absorb electrons from graphene and increase graphene’s conductivity. NH 3 molecules are electron donors (n-type), inject electrons into graphene and reduce graphene’s conductivity .…”

Section: Sensing Mechanisms Of Graphene Sensorsmentioning

confidence: 99%

Physical and Chemical Sensors on the Basis of Laser-Induced Graphene: Mechanisms, Applications, and Perspectives

2021

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Laser-induced graphene (LIG) is produced rapidly by directly irradiating carbonaceous precursors, and it naturally exhibits as a three-dimensional porous structure. Due to advantages such as simple preparation, time-saving, environmental friendliness, low cost, and expanding categories of raw materials, LIG and its derivatives have achieved broad applications in sensors. This has been witnessed in various fields such as wearable devices, disease diagnosis, intelligent robots, and pollution detection. However, despite LIG sensors having demonstrated an excellent capability to monitor physical and chemical parameters, the systematic review of synthesis, sensing mechanisms, and applications of them combined with comparison against other preparation approaches of graphene is still lacking. Here, graphene-based sensors for physical, biological, and chemical detection are reviewed first, followed by the introduction of general preparation methods for the laser-induced method to yield graphene. The preparation and advantages of LIG, sensing mechanisms, and the properties of different types of emerging LIG-based sensors are comprehensively reviewed. Finally, possible solutions to the problems and challenges of preparing LIG and LIG-based sensors are proposed. This review may serve as a detailed reference to guide the development of LIG-based sensors that possess properties for future smart sensors in health care, environmental protection, and industrial production.

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Section: Sensing Mechanisms Of Graphene Sensorsmentioning

confidence: 99%

Physical and Chemical Sensors on the Basis of Laser-Induced Graphene: Mechanisms, Applications, and Perspectives

2021

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“…Over this, Pt-decorated graphene seems to be a promising gas sensor toward CO, H 2 S, and SO 2 . In a recent report on Cu-doped GO for H 2 S sensing by Liu et al, the sensor revealed a high performance, which was ascribed to the alteration in its refractive index.…”

Section: Graphene-based H2s Gas Sensorsmentioning

confidence: 99%

Overview of the Recent Advancements in Graphene-Based H₂S Sensors

Tan

Tang

Wang

et al. 2022

ACS Appl. Nano Mater.

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Hydrogen sulfide (H2S) gas detection at room temperature is of immense interest because it reduces power consumption, enhances long-term stability, and reduces the risk of explosion in the existence of flammable gases. Graphene-based gas sensors have been widely utilized in H2S sensing because of their atomically thick two-dimensional conjugated structures, huge specific surface areas, and excellent conductivity and mechanical stability. Usually graphene-based sensors exhibit high sensitivity and selectivity toward H2S gas with limits of detection below 100 ppb. In this critical review, we summarize the history and physicochemical properties of graphene. Further, we discuss recent advancements in the fabrication of graphene-based sensors including metal/graphene, metal oxide/graphene, polymers/graphene, and metal–organic frameworks/graphene sensors for applications in H2S gas sensing. Finally, future perspectives on the improvement of graphene-based H2S sensors are discussed.

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“…5(b)) [90], the SSCS fiber sensor can be used to detect specific chemical/biological molecules. For example, Gu et al deposited poly(allylamine hydrochloride) and poly(acrylic acid) on the SSCS for pH sensing in either acid or alkali solutions (in the pH range 2.5 to 10) with a resolution of 0.013 pH units [91] and used self-assembly nanocoating to detect metal ions over a wide metal ion concentrations range (10 nM-0.1 M) with a detection limit of 9.6 nM [92]; Engholm et al proposed a means to coat a thin layer of polymer on the SSCS for pH sensing in a wider pH range from 1.95 to 11.89 [93] and Ivanov et al studied the influence of overlays on the SSCS for pH sensing [94]; Yu et al used self-assembly technique to functionalize the SSCS for streptavidin measurement with a LoD 0.02 nM [95]; Huang et al developed a layer-by-layer deposition technique for ammonia in water [96] and in air [97] sensing; Zheng et al successfully used a functionalized SSCS for IgG detection with sensitivity of 10.4 nm/(mg/ml) [98]; Long et al functionalized the SSCS with a monolayer poly-l-lysine (PLL) and single-stranded deoxyribonucleic acid (ssDNA) to detect target DNA molecules [99]; Liu et al demonstrated a copper/graphene oxide (Cu/GO) coated cascade SSCS fiber structure for the detection of hydrogen sulfide with a sensitivity of 4.83 pm/ppm [100]. Functionalizing of a reflective SSCS fiber structure has also been widely studied.…”

Section: B Sscs Fiber Structuresmentioning

confidence: 99%

Singlemode-Multimode-Singlemode Fiber Structures for Sensing Applications—A Review

Liu

et al. 2021

IEEE Sensors J.

128

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A singlemode-multimode-singlemode (SMS) fiber structure consists of a short section of multimode fiber fusionspliced between two SMS fibers. The mechanism underpinning the operation of an SMS fiber structure is multimode interference and associated self-imaging. SMS structures can be used in a variety of optical fiber systems but are most commonly used as sensors for a variety of parameters, ranging from macro-world measurands such as temperature, strain, vibration, flow rate, RI and humidity to the micro-world with measurands such as proteins, pathogens, DNA, and specific molecules. While traditional SMS structures employ a short section of standard multimode fiber, a large number of structures have been investigated and demonstrated over the last decade involving the replacement of the multimode fiber section with alternatives such as a hollow core fiber or a tapered fiber. The objective of replacing the multimode fiber has most often been to allow sensing of different measurands or to improve sensitivity. In this paper, several different categories of SMS fiber structures, including traditional SMS, modified SMS and tapered SMS fiber structures are discussed with some theoretical underpinning and reviews of a wide variety of sensing examples and recent advances. The paper then summarizes and compares the performances of a variety of sensors which have been published under a number of headings. The paper concludes by considering the challenges faced by SMS based sensing schemes in terms of their deployment in real world applications and discusses possible future developments of SMS fiber sensors.

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Hydrogen sulfide gas sensor based on copper/graphene oxide coated multi-node thin-core fiber interferometer

Cited by 17 publications

References 26 publications

Physical and Chemical Sensors on the Basis of Laser-Induced Graphene: Mechanisms, Applications, and Perspectives

Physical and Chemical Sensors on the Basis of Laser-Induced Graphene: Mechanisms, Applications, and Perspectives

Overview of the Recent Advancements in Graphene-Based H₂S Sensors

Singlemode-Multimode-Singlemode Fiber Structures for Sensing Applications—A Review

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Hydrogen sulfide gas sensor based on copper/graphene oxide coated multi-node thin-core fiber interferometer

Cited by 17 publications

References 26 publications

Physical and Chemical Sensors on the Basis of Laser-Induced Graphene: Mechanisms, Applications, and Perspectives

Physical and Chemical Sensors on the Basis of Laser-Induced Graphene: Mechanisms, Applications, and Perspectives

Overview of the Recent Advancements in Graphene-Based H2S Sensors

Singlemode-Multimode-Singlemode Fiber Structures for Sensing Applications—A Review

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Overview of the Recent Advancements in Graphene-Based H₂S Sensors