Electrostatic sprayed SnO2 and Cu-doped SnO2 films for H2S detection

Ghimbeu, Camélia Matei; Lumbreras, Martine; Siadat, Maryam; Landschoot, R.C. van; Schoonman, J.

doi:10.1016/j.snb.2008.04.007

Cited by 89 publications

(36 citation statements)

References 29 publications

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“…Exposure to 50 ppm SO2 leads to a sensor resistance drop of 40% whereas a H2S gas concentration of only 2.5 ppm decreases the resistance by 85%, which demonstrates the extraordinary sensitivity of the nanosensors. Furthermore, Ghimbeu et al [7] reported the ability of electrostatic sprayed SnO2 and CuO/SnO2 (1, 2, and 4 at.% Cu) films to detect different pollutant gases, i.e., H2S, SO2, and NO2. The SnO2 films had low response of H2S (6 to 10 ppm) and SO2 (1 to 20 ppm) at low operating temperature of 100°C.…”

Section: Noxious Gases (So2 and H2s) Sensing Propertiesmentioning

confidence: 99%

“…Hydrogen sulfide (H2S) is a toxic gas produced from the coal, oil, and natural gas industries [1][2][3][4][5][6][7]. The high toxicity of H2S, which has significant negative impacts on health and the environment, has attracted attention to monitor and control this gas.…”

Section: Introductionmentioning

confidence: 99%

“…SnO2 is one of the most promising materials for sensor and has attractively established the attention of many users and scientists' interest in gas sensing under atmospheric conditions. It is a wide band gap and the best-understood prototype of oxide-based gas sensors for the detection of various noxious gases especially H2S and SO2 [1][2][3][4][5][6][7][8][9]. In the present study, Flame Spray Pyrolysis (FSP) is presented as a very promising technique for sensor material fabrication since it enables primary particle and crystal size control [18,19], which is important to improve the sensitivity, as well as controlling in situ deposition of noble metal clusters [19].…”

Section: Introductionmentioning

confidence: 99%

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The Monitoring of H2S and SO2 Noxious Gases from Industrial Environment with Sensors Based on Flame-Spray-Made SNO2 Nanoparticles

Liewhiran¹,

Tamaekong²,

Wisitsoraat³

et al. 2012

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Abstract. The noxious gas sensors were developed successfully using flame-spray-made SnO2 nanoparticles as the sensing materials. The functionalized nanoparticle properties were further analyzed by XRD, BET and TEM analyses. The SnO2 nanoparticles (SSABET: 141.6 m 2 /g) were investigated revealing non-agglomerated spherical, hexagonal, rectangle (3-10 nm), and rod-like (3-5 nm in width and 5-20 nm in length) morphologies. The sensing films were prepared by spin coating onto the Al2O3 substrates interdigitated with Au electrodes. The sensing films were significantly developed in order to detect with H2S (0.5-10 ppm) and SO2 (20-500 ppm) at the operating temperature ranging from 200-350°C. After sensing test, the cross-section of sensing film was analyzed by SEM analyses. It was found that SnO2 sensing film showed higher sensitivity to H2S gas with very fast response at lower concentrations (3s, to 10 ppm). The cross sensitivities of the sensor towards different concentrations of H2S, CO, H2, and C2H2 were measured at 300°C. The sensor evidently shows much less response to CO, H2, and C2H2 than to H2S indicating higher selectivity for H2S of the SnO2 sensor at the lower concentration (10 ppm). Therefore, the SnO2 sensor was the most suitable candidate for the efficient detection of H2S noxious gas.

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Section: Noxious Gases (So2 and H2s) Sensing Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Monitoring of H2S and SO2 Noxious Gases from Industrial Environment with Sensors Based on Flame-Spray-Made SNO2 Nanoparticles

Liewhiran¹,

Tamaekong²,

Wisitsoraat³

et al. 2012

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“…Many different approaches can be used to promote visible light absorption, such as metal doping, ion doping, carbon materials doping, etc. [10][11][12]. Especially, fluorine (F) has been considered as one of the most effective dopants for enhancing light absorption.…”

Section: Introductionmentioning

confidence: 99%

Cu Nanoparticles/Fluorine-Doped Tin Oxide (FTO) Nanocomposites for Photocatalytic H2 Evolution under Visible Light Irradiation

et al. 2017

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Abstract:Copper nanoparticles/fluorine-doped tin oxide (FTO) nanocomposites were successfully prepared by a simple hydrothermal method. The synthesized nanocomposites were characterized by X-ray diffraction (XRD), UV-visible diffuse-reflectance spectrum (UV-VIS DRS), energy dispersive X-ray (EDX), transmission electron microscopy (TEM), Raman spectra, and X-ray photoelectron spectroscopy (XPS). The obtained Cu/FTO nanocomposites exhibit high photocatalytic activity for H 2 evolution under visible light (λ > 420 nm) irradiation. When the content of Cu is 19.2 wt % for FTO, the Cu/FTO photocatalyst shows the highest photocatalytic activity and the photocatalytic H 2 evolution rate is up to 11.22 µmol·h −1 . Meanwhile, the photocatalyst exhibits excellent stability and repeatability. It is revealed that the transfer efficiency of the photogenerated electrons is improved greatly because of the intense interaction between Cu NPs and FTO. Furthermore, a possible mechanism is proposed for enhanced photocatalytic H 2 evolution of Cu/FTO photocatalysts under visible light irradiation.

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“…[6][7][8][9]. The nanocrystalline films and metal doped SnO 2 films have been synthesized by various approaches, such as atmospheric pressure chemical vapor deposition [10], electron beam evaporation [11], pulsed laser deposition [12], sol-gel [9], sputtering [8,13], and electrostatic spray deposition [14]. Among these techniques, pulsed magnetron sputtering has recently become a very popular method of thin film deposition, due to its versatility, high stability, controllability, repeatability and ability to provide uniform coatings over large areas substrate up to 4 m in width [15,16].…”

Section: Introductionmentioning

confidence: 99%

Nanocrystalline Au:Ag:SnO2 films prepared by pulsed magnetron sputtering

Reddy

Figueiredo

Cavaleiro

2013

Journal of Physics and Chemistry of Solids

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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Electrostatic sprayed SnO2 and Cu-doped SnO2 films for H2S detection

Cited by 89 publications

References 29 publications

The Monitoring of H2S and SO2 Noxious Gases from Industrial Environment with Sensors Based on Flame-Spray-Made SNO2 Nanoparticles

The Monitoring of H2S and SO2 Noxious Gases from Industrial Environment with Sensors Based on Flame-Spray-Made SNO2 Nanoparticles

Cu Nanoparticles/Fluorine-Doped Tin Oxide (FTO) Nanocomposites for Photocatalytic H2 Evolution under Visible Light Irradiation

Nanocrystalline Au:Ag:SnO2 films prepared by pulsed magnetron sputtering

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