Synthesis and Gas Sensing Properties of Single La-Doped  SnO2 Nanobelts

Wu, Yue; Zhang, Heng; Liu, Yingkai; Chen, Weiwu; Ma, Jiang; Li, Shuanghui; Qin, Zhaojun

doi:10.3390/s150614230

Cited by 28 publications

(6 citation statements)

References 25 publications

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“…Similarly, Sachdeva et al [59] presented a MEMS-based SnO 2 thin film acetone sensor with a higher operating temperature and a very slow response and recovery than our sensors. Also, some other reports like 1 wt% PbO doped SnO 2 thick film by Srivastava et al [20], La-doped SnO 2 nanobelts by Wu et al [60], and 3 mol% La-doped SnO 2 nanoparticles by Chikhale et al [61] show a lesser acetone response compared to sensors presented here under a similar range of operating temperatures.…”

Section: The Acetone Sensing Performance Of the Sensorssupporting

confidence: 58%

A comparison study on the acetone sensing performance of preeminent nanostructures of SnO₂ for diabetes diagnosis

Priya,

Subha,

Antony

et al. 2023

Phys. Scr.

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Metal oxide semiconductor-based acetone sensors are of great need owing to their cost-effective easy production for real-time applications. Experiments on different morphologies of metal oxide nanostructures are gaining momentum for enhancing acetone sensing properties. 1D nanofibers and dangling bonds-rich facet exposed materials are eminent nanostructures in this field. In this article, we compare the acetone-sensing abilities of these nanostructures, including nanofibers and facet-exposed nanostructures. Acetone sensing qualities of the fabricated sensors were tested at different temperatures varying from 100 to 350℃. Due to a significant number of dangling bonds on the surface, the octahedral nanoparticle sensor produced a higher response than the other sensors. At their respective operating temperatures, each of the manufactured sensors was capable of detecting a very low concentration of acetone (1 ppm). All of the samples had acceptable response and recovery times. The octahedral nanoparticle sensor's excellent repeatability, reproducibility, and long-term stability made it a good choice for real-time detection of acetone in the exhaled breath of individuals with diabetes. In patients with diabetes, the exhaled breath exhibits an acetone concentration exceeding 1.8 ppm, whereas in healthy persons, this concentration typically falls between the ranges of 0.3-0.9 ppm.

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Section: The Acetone Sensing Performance Of the Sensorssupporting

confidence: 58%

A comparison study on the acetone sensing performance of preeminent nanostructures of SnO₂ for diabetes diagnosis

Priya,

Subha,

Antony

et al. 2023

Phys. Scr.

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“…The porosity and orderliness significantly improved the specific surface area, electron transport capabilities, and active site density of SnO 2 nanomaterials. In addition, suitable noble metals and transition metals are inserted into SnO 2 sensors; these metals’ activities coupled with the semiconductor properties could improve their selectivity and sensing response. − …”

Section: Introductionmentioning

confidence: 99%

Ga-Doped 3D Ordered Porous SnO₂ for Enhanced Formaldehyde Sensing Performance

Sun

Tang

et al. 2021

J. Phys. Chem. C

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Pure and Ga-doped 3D ordered porous SnO2 (3DOPS) nanomaterials were synthesized by a simple template method, and SnO2 nanoparticles (NPs) were prepared by an annealing process. The presence of Ga in 3DOPS and the structure of 3DOPS were determined by X-ray powder diffraction (XRD), energy-dispersive spectroscopy (EDS), X-ray photoelectric spectroscopy (XPS), and scanning electron microscopy (SEM). The surface areas of the porous structure were measured by the BET method using a middle-high pressure physical gas adsorption instrument. Due to the porous structure and dopant effects on the SnO2 nanomaterials, 3 at % Ga-doped 3DOPS has the largest specific surface area (61.58 m2/g) compared with pure particle tin dioxide (38.60 m2/g). The 3 at % Ga-doped 3DOPS-based sensor exhibits a lower detection limit (2/0.1 ppm) and improved sensitivity (55/50 ppm) to formaldehyde (HCHO) at a low temperature (210 °C), and the response is 6.5 times higher than that of the pure SnO2 NP-based sensor (8.5/50 ppm). However, the response of pure 3DOPS (18/50 ppm) is only twice as high as that of the pure SnO2 NP-based sensor. In addition, the 3.0 at % Ga-doped level of the SnO2 sensor showed a fast response time (2 s) and excellent selectivity. The high sensitivity of SnO2 can be explained by the increase in the specific surface area and porosity brought by the 3D ordered porous structure, and the modified suface structure by precious metals.

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“…Sensitivity percentage was 70% when adding 15wt% to SnO 2 at the concentration of gas 100 ppm of SO 2 . For 5 ppm of SO 2 gas, sensitivity percentage was 45% in the same doping http://www.nanobe.org weight ratio [18]. The aim of this work was to prepare vanadium doped SnO 2 in order to study its structural, morphological and optical properties.…”

Section: Introductionmentioning

confidence: 99%

Effect of Vanadium on Structure and Morphology of SnO2 Thin Films

Muhammad¹,

Hassan²,

Qader³

et al. 2020

Nano BioMed ENG

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Tin oxide was prepared by chemical methods and then doped with different weight ratios of vanadium 2wt% and 4wt%. The structural, morphological, and optical properties were studied. It was found that all the recorded films had a polycrystalline diffraction pattern and that the predominant reflection was (111) plane. The doping processes resulted in the improvement of crystalline structure and the disappearance of a number of secondary reflections and the direction of the film in a single crystalline pattern, thus reducing the values of energy gap and percentage transmittance. The morphological properties were studied by converting the three-dimensional images into graphic drawings to enable us to easily calculate surface parameters.

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Synthesis and Gas Sensing Properties of Single La-Doped SnO2 Nanobelts

Cited by 28 publications

References 25 publications

A comparison study on the acetone sensing performance of preeminent nanostructures of SnO₂ for diabetes diagnosis

A comparison study on the acetone sensing performance of preeminent nanostructures of SnO₂ for diabetes diagnosis

Ga-Doped 3D Ordered Porous SnO₂ for Enhanced Formaldehyde Sensing Performance

Effect of Vanadium on Structure and Morphology of SnO2 Thin Films

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Synthesis and Gas Sensing Properties of Single La-Doped SnO2 Nanobelts

Cited by 28 publications

References 25 publications

A comparison study on the acetone sensing performance of preeminent nanostructures of SnO2 for diabetes diagnosis

A comparison study on the acetone sensing performance of preeminent nanostructures of SnO2 for diabetes diagnosis

Ga-Doped 3D Ordered Porous SnO2 for Enhanced Formaldehyde Sensing Performance

Effect of Vanadium on Structure and Morphology of SnO2 Thin Films

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A comparison study on the acetone sensing performance of preeminent nanostructures of SnO₂ for diabetes diagnosis

A comparison study on the acetone sensing performance of preeminent nanostructures of SnO₂ for diabetes diagnosis

Ga-Doped 3D Ordered Porous SnO₂ for Enhanced Formaldehyde Sensing Performance