A novel gas sensor based on SnO2/Os thin film for the detection of methane at low temperature

Quaranta, F.; Rella, R.; Siciliano, P.; Capone, S.; Epifani, Mauro; Vasanelli, L.; Licciulli, Antonio; Zocco, A.

doi:10.1016/s0925-4005(99)00095-7

Cited by 84 publications

(41 citation statements)

References 15 publications

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“…Os metal is usually alloyed with other metals for different uses such as instrument pivots, electrical contacts, fountain pen tips or others. Os doped SnO 2 has been used for methane gas sensing 16 while Os-Pd NPs on carbon nanotubes have been used for catalysis. 14 Os NPs are also used as anode materials in direct borohydride fuel cells.…”

Section: Introductionmentioning

confidence: 99%

Enhanced catalytic and SERS activities of CTAB stabilized interconnected osmium nanoclusters

Ede

Nithiyanantham

Kundu

2014

Phys. Chem. Chem. Phys.

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A new route for the formation of osmium nanoparticles (NPs) having different morphologies like aggregated clusters, chain-like networks, and small spheres are reported. The synthesis was done by utilizing a simple wet-chemical method at room temperature (RT) by the reaction of OsO 4 , cetyl trimethyl ammonium bromide (CTAB), 2,7-dihydroxynaphthalene (2,7-DHN) and NaOH under 30 min of reaction. The diameter of the individual particles in all the morphologies was B1-3 nm. The synthesized materials have been tested for catalysis and SERS studies. The catalysis study was examined taking different organic nitro compounds and the catalysis rate was found superior as compared to other reports. The surface enhanced Raman scattering (SERS) study was done taking Rose Bengal (R Be) as a probe molecule and the observed enhancement factor (EF) value was found superior or comparable to most of other noble metal NPs. The overall synthesis process was simple, less time consuming and cost-effective. The enhanced catalytic and SERS activities of the Os NCs might open up a new avenue for the application in other organic catalysis reactions, SERS based detection of environmentally important trace bio-molecules and sensors.

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Section: Introductionmentioning

confidence: 99%

Enhanced catalytic and SERS activities of CTAB stabilized interconnected osmium nanoclusters

Ede

Nithiyanantham

Kundu

2014

Phys. Chem. Chem. Phys.

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“…While many projects utilize sensors capable of detecting criteria pollutants, advances in the development of metal-oxide semiconductor (MOx) sensors have led to sensors capable of detecting methane in settings closer to ambient environmental conditions (Quaranta et al, 1999;Biaggi-Labiosa, 2012). Eugster and Kling (2012) demonstrated the ability of the Figaro 30 TGS 2600 sensor to resolve diurnal methane fluctuations in a remote area of Alaska.…”

Section: A Place For Sensorsmentioning

confidence: 99%

Assessing a low-cost methane sensor quantification system for use in complex rural and urban environments

Collier-Oxandale¹,

Hannigan²,

Casey³

et al. 2018

Preprint

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Abstract.Low-cost sensors have the potential to facilitate the exploration of air quality issues on new temporal and spatial scales. Here we evaluate a low-cost sensor quantification system for methane through its use in two different deployments. The first, a one-month deployment along the Colorado Front Range includes sites near active oil and gas operations in the Denver-15Julesberg basin. The second deployment in an urban Los Angeles neighborhood, an subject to complex mixture of air pollution sources including oil operations. Given its role as a potent greenhouse gas, new low-cost methods for detecting and monitoring methane may aid in protecting human and environmental health. In this paper, we assess a number of linear calibration models to convert raw sensor signals into ppm concentration values. We also examine different choices that can be made during calibration and data processing, and explore cross-sensitivities that impact this sensor type. The results 20 illustrate the accuracy of the Figaro TGS 2600 sensor when methane is quantified from raw signals using the techniques described. The results also demonstrate the value of these tools for examining air quality trends and events on small spatial and temporal scales as well as their ability to characterize an area -highlighting their potential to provide preliminary data that can inform more targeted measurements or supplement existing monitoring networks.

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“…Quaranta et al [96] studied the methane sensing properties of osmiumdoped SnO 2 films that were prepared by Sol-gel technique using SnCl 4 and OsCl 3 precursors. The experimental data reported in this work show that Os doping improves the gas sensitive properties of the tin oxide thin films by enhancing the response to CH 4 and simultaneously by lowering the operating temperature that is shown in Figure 8.…”

Section: Nanocrystalline Metal Oxide-based Methane Sensorsmentioning

confidence: 99%

Nanocrystalline Metal Oxides for Methane Sensors: Role of Noble Metals

Basu

2009

Journal of Sensors

130

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Methane is an important gas for domestic and industrial applications and its source is mainly coalmines. Since methane is extremely inflammable in the coalmine atmosphere, it is essential to develop a reliable and relatively inexpensive chemical gas sensor to detect this inflammable gas below its explosion amount in air. The metal oxides have been proved to be potential materials for the development of commercial gas sensors. The functional properties of the metal oxide-based gas sensors can be improved not only by tailoring the crystal size of metal oxides but also by incorporating the noble metal catalyst on nanocrystalline metal oxide matrix. It was observed that the surface modification of nanocrystalline metal oxide thin films by noble metal sensitizers and the use of a noble metal catalytic contact as electrode reduce the operating temperatures appreciably and improve the sensing properties. This review article concentrates on the nanocrystalline metal oxide methane sensors and the role of noble metals on the sensing properties.

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A novel gas sensor based on SnO2/Os thin film for the detection of methane at low temperature

Cited by 84 publications

References 15 publications

Enhanced catalytic and SERS activities of CTAB stabilized interconnected osmium nanoclusters

Enhanced catalytic and SERS activities of CTAB stabilized interconnected osmium nanoclusters

Assessing a low-cost methane sensor quantification system for use in complex rural and urban environments

Nanocrystalline Metal Oxides for Methane Sensors: Role of Noble Metals

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