Highly sensitive alcohol sensor based on a single Er-doped In2O3 nanoribbon

Qin, Zhaojun; Liu, Yingkai; Chen, Weiwu; Ai, Peng; Wu, Yue; Li, Shuanghui; Yu, Dapeng

doi:10.1016/j.cplett.2015.12.054

Cited by 21 publications

(3 citation statements)

References 40 publications

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“…As a result, since the sensor sensitivity is given by the slope of the calibration curves, it was observed an increase from 5.71 × 10 −3 for the pure ZnO to 1.21 × 10 −2 for the doped ZnO This better sensing performance when ZnO was doped with Dy 3+ is probably related to an excess of oxygen species adsorbed on the surface. The reason is the higher lattice distortion and a larger number of carriers created by the dopant, resulting in more oxygen ions adsorbed on the surface [ 47 ]. In addition, the moderate operating temperature applied helps achieving an improved long-term stability of the ZnO-based sensors [ 48 ].…”

Section: Resultsmentioning

confidence: 99%

Dysprosium Doped Zinc Oxide for NO2 Gas Sensing

Fidha

Bitri

Mahjoubi

et al. 2022

Sensors

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Pure and dysprosium-loaded ZnO films were grown by radio-frequency magnetron sputtering. The films were characterized using a wide variety of morphological, compositional, optical, and electrical techniques. The crystalline structure, surface homogeneity, and bandgap energies were studied in detail for the developed nanocomposites. The properties of pure and dysprosium-doped ZnO thin films were investigated to detect nitrogen dioxide (NO2) at the ppb range. In particular, ZnO sensors doped with rare-earth materials have been demonstrated as a feasible strategy to improve the sensitivity in comparison to their pure ZnO counterparts. In addition, the sensing performance was studied and discussed under dry and humid environments, revealing noteworthy stability and reliability under different experimental conditions. In this perspective, additional gaseous compounds such as ammonia and ethanol were measured, resulting in extremely low sensing responses. Therefore, the gas-sensing mechanisms were discussed in detail to better understand the NO2 selectivity given by the Dy-doped ZnO layer.

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Section: Resultsmentioning

confidence: 99%

Dysprosium Doped Zinc Oxide for NO2 Gas Sensing

Fidha

Bitri

Mahjoubi

et al. 2022

Sensors

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“…Although the sensor had a response of 4252% to 30 ppm of NO 2 , it operated at temperatures ranging as high as 200 °C. Qin's group 23 synthesized In 2 O 3 nanoribbons (NBs) through carbothermal reduction, achieving a response value of 3.6 to 500 ppm ethanol at an operating temperature of 260 °C. Subsequently, Qin synthesized Er− In 2 O 3 NBs, which improved the sensitivity performance, though the operating temperature was still high (220 °C).…”

mentioning

confidence: 99%

Visible Light-Activated Room Temperature NO₂ Gas Sensing Based on the In₂O₃@ZnO Heterostructure with a Hollow Microtube Structure

Li,

Wei,

Liu

et al. 2024

ACS Sens.

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The persistent challenge of poor recovery characteristics of NO 2 sensors operated at room temperature remains significant. However, the development of In 2 O 3 -based gas sensing materials provides a promising approach to accelerate response and recovery for sub-ppm of NO 2 detection at room temperature. Herein, we propose a simple two-step method to synthesize a onedimensional (1D) In 2 O 3 @ZnO heterostructure material with hollow microtubes, by coupling metal−organic frameworks (MOFs) (MIL-68 (In)) and zinc ions. Meanwhile, the In 2 O 3 @ ZnO composite-based gas sensor exhibits superior sensitivity performance to NO 2 under visible light activation. The response value to 5 ppm of NO 2 at room temperature is as high as 1800, which is 35 times higher than that of the pure In 2 O 3 -based sensor. Additionally, the gas sensor based on the In 2 O 3 @ZnO heterostructure demonstrates a significantly reduced response/recovery time of 30 s/67 s compared to the sensor based on pure In 2 O 3 (74 s/235 s). The outstanding gas sensing properties of the In 2 O 3 @ZnO heterostructure-based sensors can be attributed to the enhanced photogenerated charge separation efficiency resulting from the heterostructure effect, and the improved receptor function toward NO 2 , which can increase the reactive sites and gas adsorption capacity. In summary, this work proposes a low-cost and efficient method to synthesize a 1D heterostructure material with microtube structures, which can serve as a fundamental technique for developing high-performance room-temperature gas sensors.

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“…The measurement of the gas sensor was processed with the equipment designed by our laboratory [23]. The process was conducted in a hermetic stainless steel box (20 L).…”

Section: The Manufacture and Characterization Of A Single Nanobelt Gamentioning

confidence: 99%

Influence of Mn Doping on the Sensing Properties of SnO<sub>2</sub> Nanobelt to Ethanol

Huang¹,

Liu²,

Wu³

et al. 2017

AJAC

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Mn doped SnO 2 nanobelts (Mn:SnO 2 NBs) and pure SnO 2 nanobelts (SnO 2 NBs) were synthesized by thermal evaporation technique at 1355˚C with Ar carrier gas (25 sccm, 150 Torr). The SEM, EDS, XRD, TEM, HRTEM, SAED, XPS, UV-Vis techniques were used to characterize the attained samples. The band gap of Mn doped SnO 2 NBs by UV-Vis was measured to be 3.43 eV at room temperature, lower than that of the pure counterpart with ~3.66 eV. Mn:SnO 2 NB and pure SnO 2 NB sensors were developed. It is found that Mn:SnO 2 NB device exhibits a higher sensitivity with 62.12% to 100 ppm of ethanol at 210˚C, which is the highest sensitivity among the three tested VOC gases (ethanol, ethanediol, and acetone). The theoretical detection limit for ethanol of the sensor is 1.1 ppm. The higher response is related to the selective catalysis of the doped Mn ions.

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Highly sensitive alcohol sensor based on a single Er-doped In2O3 nanoribbon

Cited by 21 publications

References 40 publications

Dysprosium Doped Zinc Oxide for NO2 Gas Sensing

Dysprosium Doped Zinc Oxide for NO2 Gas Sensing

Visible Light-Activated Room Temperature NO₂ Gas Sensing Based on the In₂O₃@ZnO Heterostructure with a Hollow Microtube Structure

Influence of Mn Doping on the Sensing Properties of SnO<sub>2</sub> Nanobelt to Ethanol

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Highly sensitive alcohol sensor based on a single Er-doped In2O3 nanoribbon

Cited by 21 publications

References 40 publications

Dysprosium Doped Zinc Oxide for NO2 Gas Sensing

Dysprosium Doped Zinc Oxide for NO2 Gas Sensing

Visible Light-Activated Room Temperature NO2 Gas Sensing Based on the In2O3@ZnO Heterostructure with a Hollow Microtube Structure

Influence of Mn Doping on the Sensing Properties of SnO&lt;sub&gt;2&lt;/sub&gt; Nanobelt to Ethanol

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Visible Light-Activated Room Temperature NO₂ Gas Sensing Based on the In₂O₃@ZnO Heterostructure with a Hollow Microtube Structure

Influence of Mn Doping on the Sensing Properties of SnO<sub>2</sub> Nanobelt to Ethanol