Highly sensitive formaldehyde resistive sensor based on a single Er-doped SnO2 nanobelt

Li, Shuanghui; Liu, Yingkai; Wu, Yue; Chen, Weiwu; Qin, Zhaojun; Gong, Nailiang; Yu, Dapeng

doi:10.1016/j.physb.2016.02.021

Cited by 30 publications

(11 citation statements)

References 38 publications

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“…The Sn (3d) peak shows two peaks located at the binding energies of 486.3 eV Sn (3d 5/2 ) and 494.7 eV of Sn (3d 3/2 ), as shown in Fig. 3 c. The separation distance between the two peaks is 8.4 eV, which corresponds to the Sn standard spectrum, indicating the formation of Sn 4+ oxidation state in the SnO 2 nanobelts [ 20 ]. The Y (3d) can be separated into two peaks; the peaks at 157.2 and 159.98 eV belong to the binding energies of Y (3d 5/2 ) and Y (3d 3/2 ), respectively, as displayed in Fig.…”

Section: Resultsmentioning

confidence: 99%

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The Sensing Properties of Single Y-Doped SnO2 Nanobelt Device to Acetone

Liu

et al. 2016

Nanoscale Res Lett

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Pure SnO2 and Y-doped SnO2 nanobelts were prepared by thermal evaporation at 1350 °C in the presence of Ar carrier gas (30 sccm). The samples were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), energy dispersion spectrometer (EDS), X-ray photoelectron spectrometer (XPS), UV-Vis absorption spectroscopy, Raman spectroscopy, and Fourier transform infrared spectrum (FTIR). The sensing properties of the devices based on a single SnO2 nanobelt and Y-doped SnO2 nanobelt were explored to acetone, ethanol, and ethanediol. It reveals that the sensitivity of single Y-doped SnO2 nanobelt device is 11.4 to 100 ppm of acetone at 210 °C, which is the highest response among the three tested VOC gases. Y3+ ions improve the sensitivity of SnO2 sensor and have an influence on the optical properties of Y-doped SnO2 nanobelts.Electronic supplementary materialThe online version of this article (doi:10.1186/s11671-016-1685-1) contains supplementary material, which is available to authorized users.

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Section: Resultsmentioning

confidence: 99%

“…According to , the RMS noise is 0.0036 for acetone sensor [ 24 ]. The detection limit can be written as DL (ppm) = 3 × RMS noise /slope, where 3 is the signal-to-noise ratio and RMS noise represents the sensor noise [ 20 ]. Therefore, the detection limit of the sensor is 0.9024 ppm.…”

Section: Resultsmentioning

confidence: 99%

The Sensing Properties of Single Y-Doped SnO2 Nanobelt Device to Acetone

Liu

et al. 2016

Nanoscale Res Lett

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“…Doped nanobelts were employed in the discriminative assay of HCHO as detailed below. Er-doped SnO 2 and Pt-decorated MoO 3 nanobelts were reported for the quantitation of volatile HCHO [ 258 , 259 ]. As shown in Figure 14 , Er-doped SnO 2 nanobelts [ 258 ] display a distinct response to HCHO vapor (R a /R g = 9 for 100 ppm at 230 °C; response/recovery time = 17 s/25 s) with a LOD of 0.141 ppm.…”

Section: Various Nanostructures In Volatile Aldehyde Detectionmentioning

confidence: 99%

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

Shellaiah

Sun

2021

Sensors

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Environmental pollution related to volatile organic compounds (VOCs) has become a global issue which attracts intensive work towards their controlling and monitoring. To this direction various regulations and research towards VOCs detection have been laid down and conducted by many countries. Distinct devices are proposed to monitor the VOCs pollution. Among them, chemiresistor devices comprised of inorganic-semiconducting materials with diverse nanostructures are most attractive because they are cost-effective and eco-friendly. These diverse nanostructured materials-based devices are usually made up of nanoparticles, nanowires/rods, nanocrystals, nanotubes, nanocages, nanocubes, nanocomposites, etc. They can be employed in monitoring the VOCs present in the reliable sources. This review outlines the device-based VOC detection using diverse semiconducting-nanostructured materials and covers more than 340 references that have been published since 2016.

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“…The detection mechanism of formaldehyde with tin oxide-based gas sensors was discussed in several previous works [27,[37][38]. In brief, when SnO 2 surface is exposed to…”

Section: Sensors Responses In Synthetic Air (2% Rh)mentioning

confidence: 99%

Nanostructured tin oxide materials for the sub-ppm detection of indoor formaldehyde pollution

Sanchez

Sánchez-Sánchez

Izquierdo

et al. 2020

Talanta

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Interesting sensing performances of indoor formaldehyde pollution were obtained when small amounts of zinc were introduced in tin oxides. Nanostructured Sn oxide-based porous materials doped with Zn or not, were synthesized using hydrothermal routes. The physicochemical properties of the as-prepared metal-oxide materials were characterized using nitrogen adsorption, X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Gas sensors were prepared using the aforementioned tin oxide materials and they exhibited a high sensitivity to formaldehyde at 230°C, as well as a good repeatability over the time. Their limit of formaldehyde detection was as low as 8 ppb in dry air and 50 ppb in air with 60% RH at 25°C. These results were much better that those reported in the open literature and they were attributed to both higher area BET, around 180 m 2 /g, and smaller crystallite size, 3.1 nm.

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Highly sensitive formaldehyde resistive sensor based on a single Er-doped SnO2 nanobelt

Cited by 30 publications

References 38 publications

The Sensing Properties of Single Y-Doped SnO2 Nanobelt Device to Acetone

The Sensing Properties of Single Y-Doped SnO2 Nanobelt Device to Acetone

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

Nanostructured tin oxide materials for the sub-ppm detection of indoor formaldehyde pollution

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