Improving the hydrogen gas sensing performance of Pt/MoO3 nanoplatelets using a nano thick layer of La2O3

Shafiei, Mahnaz; Yu, Jie-Tai; Chen, G.; Lai, P. T.; Motta, Nunzio; Włodarski, W.; Kalantar‐zadeh, Kourosh

doi:10.1016/j.snb.2012.11.019

Cited by 28 publications

(5 citation statements)

References 46 publications

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“…To develop efficient H 2 sensors, various multicomponent SMOs, such as SnO 2 /La 2 O 3 , Pt-MoO 3 /La 2 O 3 , TiO 2 /WO 3 , CuO/ZnO, SnO 2 /Co 3 O 4 , SnO 2 /TiO 2 , and SnO 2 /ZnO, , were reported. For instance, Katoch et al .…”

Section: Metal Oxide-based Materialsmentioning

confidence: 99%

Chemiresistive Hydrogen Sensors: Fundamentals, Recent Advances, and Challenges

et al. 2020

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Hydrogen (H 2 ) is one of the next-generation energy sources because it is abundant in nature and has a high combustion efficiency that produces environmentally benign products (H 2 O). However, H 2 /air mixtures are explosive at H 2 concentrations above 4%, thus any leakage of H 2 must be rapidly and reliably detected at much lower concentrations to ensure safety. Among the various types of H 2 sensors, chemiresistive sensors are one of the most promising sensing systems due to their simplicity and low cost. This review highlights the advances in H 2 chemiresistors, including metal-, semiconducting metal oxide-, carbon-based materials, and other materials. The underlying sensing mechanisms for different types of materials are discussed, and the correlation of sensing performances with nanostructures, surface chemistry, and electronic properties is presented. In addition, the discussion of each material emphasizes key advances and strategies to develop superior H 2 sensors. Furthermore, recent key advances in other types of H 2 sensors are briefly discussed. Finally, the review concludes with a brief outlook, perspective, and future directions.

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Section: Metal Oxide-based Materialsmentioning

confidence: 99%

Chemiresistive Hydrogen Sensors: Fundamentals, Recent Advances, and Challenges

et al. 2020

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“…One dimensional (1D) nanostructures in the form of wires, belts, rods, tubes and fibres have been extensively utilized in different electrochemical, optical, and bio-sensing applications [1][2][3][4][5][6][7][8]. The increase in demand for these nanostructures is mainly attributed to their unique electrical, optical, magnetic, thermal, mechanical and chemical properties [5,9].…”

Section: Introductionmentioning

confidence: 99%

“…The nanostructured form of this material has shown great potential in different applications including as a catalyst [26], in largearea display devices [27], as gas sensors [6][7][8]28], and as batteries [29]. According to the literature, a few research groups have developed electrospun MoO3 nanofibres using different precursors and polymers [29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Morphology of electrospun poly(ethylene oxide) ultra-fine fibres with incorporated MoO3 nanoparticles

et al. 2017

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N-type semiconducting molybdenum trioxide (MoO3) nanoparticles embedded in polyethylene oxide (PEO) polymer ultra-fine fibres were deposited directly onto silicon substrates using an electrospinning technique. The effects of different MoO3/PEO concentrations as well as electrospinning parameters on the fibre morphologies were examined. Experimental results show that embedding nanoparticles and electrospinning onto small areas can be achieved without use of solvents or transfer of the deposited nanostructures. This approach offers a cost effective fabrication method to produce a diverse range of multifunctional materials for many applications including electronics, mechanical enhancement, drug delivery and gas sensing.

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“…The lower explosive limit of the hydrogen is 4% in air. In the literature, hydrogen gas sensors have been reported; generally based on the absorption of gas by reactants such as palladium which brings about a change in its optical properties [10][11][12][13]. Fiber optic sensors have been discussed in the literature for the sensing of various chemical and biological analytes including…”

Section: Introductionmentioning

confidence: 99%

A lossy mode resonance-based fiber optic hydrogen gas sensor for room temperature using coatings of ITO thin film and nanoparticles

Usha

Gupta

2016

Meas. Sci. Technol.

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In this article, the idea of employing lossy mode resonances (LMR) concertedly for gas sensing along with the reversible interaction of metal oxides with gases has been investigated. Fabrication and characterization of a LMR-based fiber optic probe with successive coatings of indium-tin oxide (ITO) film and nanoparticles over the unclad core of the fiber have been carried out for the detection of hydrogen gas (H2). The results have been compared with the probes having individual coatings of ITO thin film and nanoparticles. For calibrating and comparing, the wavelength interrogative spectra have been recorded for varying concentrations of H2 gas exploiting the sensor probes. A red shift of the spectrum has been observed with the increase in the concentration of the gas. The results uphold the fact that the LMR-based sensor with both thin film and nanoparticles layer has better sensitivity to H2 gas than the probes with the layer of either nanoparticles or thin film. A collective study on the three probes for different gases has predicted a maximum level of sensitivity for the probe with layers of thin film and nanoparticles along with the high selectivity and repeatability of the results for H2 gas. In addition to high sensitivity and selectivity, the proposed sensor can be used for online monitoring and remote sensing of the gas because of the fabrication of the probe on the optical fiber.

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Improving the hydrogen gas sensing performance of Pt/MoO3 nanoplatelets using a nano thick layer of La2O3

Cited by 28 publications

References 46 publications

Chemiresistive Hydrogen Sensors: Fundamentals, Recent Advances, and Challenges

Chemiresistive Hydrogen Sensors: Fundamentals, Recent Advances, and Challenges

Morphology of electrospun poly(ethylene oxide) ultra-fine fibres with incorporated MoO3 nanoparticles

A lossy mode resonance-based fiber optic hydrogen gas sensor for room temperature using coatings of ITO thin film and nanoparticles

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