Recent advancements in optical fiber hydrogen sensors

Zhang, Yanan; Peng, Huijie; Qian, Xiaolong; Zhang, Yuyan; An, Guowen; Zhao, Yong

doi:10.1016/j.snb.2017.01.004

Cited by 176 publications

(84 citation statements)

References 87 publications

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“…9(c) shows the correlation between variation in sensitivity of the AZO sensor and ethanol concentrations ranging from 5 to 500 ppm at 332°C. At lower concentration, it can be observed that for all the tested gases, there is a linear relationship between log (S -1) and log (C), which is in good agreement with the theory of power laws for semiconductor sensors [21,22] …”

Section: Response-recovery Characteristicsupporting

confidence: 77%

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Controllable hydrothermal synthesis of Al-doped ZnO with different microstructures, growth mechanisms, and gas sensing properties

Qin

2015

RSC Adv.

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A series of Al-doped ZnO (AZO) structures, including disk-like, flake-like, flower-like and dumbbell-like morphologies, have been synthesized by a hydrothermal method without any catalyst or template. The morphologies of these AZO structures can be conveniently controlled, by selecting the additives and controlling the experimental conditions, and the result has excellent reproducibility. The gas sensors based on AZO were fabricated and the gas sensing properties were investigated. The sensors showed high response values and reproducible response-recovery for 5-500 ppm ethanol at 332°C, comparing with NH3, CH3OH, H2, CO, HCHO, NOxand a specific mechanism was proposed.

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Section: Response-recovery Characteristicsupporting

confidence: 77%

“…The response-recovery behavior is an important characteristic for evaluating the property of gas sensors [21]. Fig.…”

Section: Response-recovery Characteristicmentioning

confidence: 99%

Controllable hydrothermal synthesis of Al-doped ZnO with different microstructures, growth mechanisms, and gas sensing properties

Qin

2015

RSC Adv.

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“…More recently, various optical sensor principles have been proposed for H 2 monitoring [44][45][46][47][48][49][50][51][52][53][54][55][56]. Sensors based on the H 2 uptake in palladium appear particularly promising.…”

Section: Emerging Spr Sensor Technologies For Admentioning

confidence: 99%

“…The volume expansion of palladium films or nanoparticles caused by metal-hydride formation can be measured very accurately using optical techniques [44,45,49,52,54,55]. Additionally, the SPR of gold (when coupled to palladium in a layer stack), can be measured accurately, with the plasmon resonance frequency being modulated by the hydrogenation of the palladium layer [48,50,53].…”

Section: Emerging Spr Sensor Technologies For Admentioning

confidence: 99%

Perspectives of surface plasmon resonance sensors for optimized biogas methanation

Lamb¹,

Bernard

Sarker³

et al. 2019

Engineering in Life Sciences

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Biogas production is becoming significantly viable as an energy source for replacing fossil‐based fuels. The further development of the biogas production process could lead to significant improvements in its potential. Wastewater treatment currently accounts for 3% of the electrical energy load in developed countries, while it could be developed to provide a source of nitrogen and phosphorus, in addition to energy. The improvement of anaerobic digestion (AD) detection technologies is the cornerstone to reach higher methane productivities and develop fully automatized processes to decrease operational costs. New sensors are requested to automatically obtain a better interpretation of the complex and dynamical internal reactor environment. This will require detailed systematic detection in order to realize a near‐optimal production process. In this review, optical fiber‐based sensors will be discussed to assess their potential for use in AD. There is currently a disparity between the complexity of AD, and online detection. By improving the durability, sensitivity, and cost of dissolved H2 (as well as H2S, acetic acid, ammonia, and methane) sensor technology, further understanding of the AD process may allow the prevention of process failure. The emergence of surface plasmon resonance (SPR) sensing with optical fibers coupled with the H2‐sensitive metal palladium, allows detection of dissolved hydrogen in liquid. By implementing these SPR sensors into AD, improvements to the biogas production process, even at small scales, may be achieved by guiding the process in the optimum direction, avoiding the collapse of the biological process. This review intends to assess the feasibility of online, cost‐effective, rapid, and efficient detection of dissolved H2, as well as briefly assessing H2S, acetic acid, ammonia, and methane in AD by SPR.

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“…In these cases, the typical probe structures were associated to the intrinsic physicochemical characteristics of the sensing thin film that change according to the H 2 concentration, so the transmitted probe optical signal will also carry the corresponding signature through intensity evolutions [3][4][5][6][7][8][9][10] or wavelength shifts [11][12][13][14][15][16][17][18][19][20]. In addition, many other studies targeted the optical response modifications based on interferometers [21][22][23][24][25][26] or surface plasmon resonance [27][28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Distributed and discrete hydrogen monitoring through optical fiber sensors based on optical frequency domain reflectometry

Rizzolo¹,

Boukenter²,

Ouerdane³

et al. 2020

J. Phys. Photonics

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The potential of discrete and distributed fiber-based sensors exploiting the Rayleigh scattering signature of doped amorphous silica is investigated for the real time monitoring of molecular hydrogen (H 2 ) detection. We showed that the impact of the refractive index changes induced by the H 2 diffusion into the silica host matrix can be used to detect and quantify this gas presence through two approaches: first via the related fiber length variation and second through the observed spectral shift. Comparing the obtained results with H 2 diffusion calculations, we can estimate the sensor sensitivity thresholds to be ∼10 16 n molecule cm −3 for the distributed measurements (spatial resolution better than 1 mm) and below ∼10 19 n molecule cm −3 for the discrete-one. The presented architecture of the sensor is well adapted to the monitoring of slowly evolving H 2 concentrations such as the ones expected in nuclear waste repositories as the time response of the sensor remains limited by the diffusion of the gas within the optical fiber. These threshold values and time responses can be easily improved by optimizing the length, the composition and/or the geometry of the sensing fiber.

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Recent advancements in optical fiber hydrogen sensors

Cited by 176 publications

References 87 publications

Controllable hydrothermal synthesis of Al-doped ZnO with different microstructures, growth mechanisms, and gas sensing properties

Controllable hydrothermal synthesis of Al-doped ZnO with different microstructures, growth mechanisms, and gas sensing properties

Perspectives of surface plasmon resonance sensors for optimized biogas methanation

Distributed and discrete hydrogen monitoring through optical fiber sensors based on optical frequency domain reflectometry

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