Characterization of Mixed xWO3(1-x)Y2O3 Nanoparticle Thick Film for Gas Sensing Application

Abadi, M. H. Shahrokh; Hamidon, Mohd Nizar; Shaari, Abdul Halim; Abdullah, Norhafizah; Misron, Norhisam; Wagiran, Rahman

doi:10.3390/s100505074

Cited by 18 publications

(6 citation statements)

References 27 publications

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“…2,5-dimethylhexane (C8H18) must be released as a gas species simultaneously with the gaseous products of reaction (1). Unfortunately, the FTIR spectrum of 2,5-dimethylhexane strongly overlaps with that of 2,6-dimethyl-4-heptanone so that a minute amount of the former cannot be detected.…”

Section: Y(c4h9co2)3 → Y2o2co3 + 3c9h18o ↑ + 2co2 ↑ (1)mentioning

confidence: 99%

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Thermal decomposition of Yttrium(III) isovalerate in argon

Grivel

Zhao

Tang

et al. 2016

Journal of Analytical and Applied Pyrolysis

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The thermal behaviour of yttrium(III) isovalerate (Y(C4H9CO2)3) was studied in argon by means of thermogravimetry, differential thermal analysis, FTIR-spectroscopy, hot-stage optical microscopy and X-ray diffraction with a laboratory Cu-tube source as well as with a synchrotron radiation source. Two structural transitions take place in the solid state at 100°C and 140°C. They are followed by the decomposition of the isovalerate salt with release of gaseous products consisting of CO2 and 2,6-dimethyl-4-heptanone and formation of Y2O2CO3 between 320°C and 440°C. Above 440°C, Y2O2CO3 is slowly converted to Y2O3 with release of CO2. The decomposition is complete at about 900°C.

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Section: Y(c4h9co2)3 → Y2o2co3 + 3c9h18o ↑ + 2co2 ↑ (1)mentioning

confidence: 99%

“…Owing to its electronic properties, high stability and low cost, Y2O3 is emerging as a versatile material for a wide variety of applications such as sensors [1], catalyst supports [2], infrared converters [3], scintillators [4], lasers [5,6], bioimaging probes [7], purification systems [8], etc.…”

Section: Introductionmentioning

confidence: 99%

Thermal decomposition of Yttrium(III) isovalerate in argon

Grivel

Zhao

Tang

et al. 2016

Journal of Analytical and Applied Pyrolysis

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“…Yttrium oxide (Y 2 O 3 ), which is an n-type semiconductor material, 4 is important for numerous applications, such as cataluminescence gas sensing, 5 phosphors, 6 laser gain media, 7 photocatalysts 8 and luminescent security inks. 9 Recently, various structures of Y 2 O 3 and its related solid solutions, such as nanoparticles, 4,10 nanorods, 11 nanotubes, 12,13 nanocrystals, 6,8,14,15 gear-shape microstructures, 16 hollow spheres [17][18][19] and thin films, 20 have been successfully prepared.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis of Lewis acid Y2O3 cubes and flowers for the removal of phospholipids from soybean oil

et al. 2013

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Biofuels have attracted significant research attention in recent years due to various energy shortages.However, the presence of phospholipid impurities in biofuels prevents their use in diesel engines. In our previous study we developed Lewis-acid ZrO 2 materials for the adsorption of phospholipids in oil solutions.In this work, for the first time, we describe the development of strong Lewis-acid Y 2 O 3 novel structures, such as Y 2 O 3 cubes and Y 2 O 3 flowers for the phospholipid removal in soybean oil solution. This is the first report for the discussion of Y 2 O 3 cubes and flowers. The relevant growth mechanism for the cubes and flowers was also discussed in this study. The as-prepared Y 2 O 3 flowers exhibit better performance in phospholipid removal than Y 2 O 3 cubes due to the larger specific surface area of the Y 2 O 3 flowers. This work also provides a feasible method for using Y 2 O 3 novel structures to remove phospholipids from plant oils that is suitable for biofuel applications.

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“…Methane sensors are based on various detection principles, such as catalytic combustion [ 5 ], metal-oxide-semiconductor (MOS) resistance [ 6 ], NDIR absorption spectroscopy [ 7 , 8 ], tunable diode laser absorption spectroscopy (TDLAS) [ 3 ] etc. Currently, most types of commercial methane sensors are not capable to detect 1 ppm level methane gas, only the TDLAS type can and usually has a minimum detection limit of 1 ppm [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

A One ppm NDIR Methane Gas Sensor with Single Frequency Filter Denoising Algorithm

Zhu

Xu²,

Jiang³

2012

Sensors

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A non-dispersive infrared (NDIR) methane gas sensor prototype has achieved a minimum detection limit of 1 parts per million by volume (ppm). The central idea of the design of the sensor is to decrease the detection limit by increasing the signal to noise ratio (SNR) of the system. In order to decrease the noise level, a single frequency filter algorithm based on fast Fourier transform (FFT) is adopted for signal processing. Through simulation and experiment, it is found that the full width at half maximum (FWHM) of the filter narrows with the extension of sampling period and the increase of lamp modulation frequency, and at some optimum sampling period and modulation frequency, the filtered signal maintains a noise to signal ratio of below 1/10,000. The sensor prototype provides the key techniques for a hand-held methane detector that has a low cost and a high resolution. Such a detector may facilitate the detection of leakage of city natural gas pipelines buried underground, the monitoring of landfill gas, the monitoring of air quality and so on.

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Characterization of Mixed xWO3(1-x)Y2O3 Nanoparticle Thick Film for Gas Sensing Application

Cited by 18 publications

References 27 publications

Thermal decomposition of Yttrium(III) isovalerate in argon

Thermal decomposition of Yttrium(III) isovalerate in argon

Hydrothermal synthesis of Lewis acid Y2O3 cubes and flowers for the removal of phospholipids from soybean oil

A One ppm NDIR Methane Gas Sensor with Single Frequency Filter Denoising Algorithm

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