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

Nanoscale Research Letters, Oct 2016

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.

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

Li et al. Nanoscale Research Letters The Sensing Properties of Single Y-Doped SnO Nanobelt Device to Acetone 2 Xinmin Li 1 2 4 Yingkai Liu 0 1 2 3 4 Shuanghui Li 1 2 4 Jieqing Huang 1 2 4 Yuemei Wu 1 2 4 Dapeng Yu 2 5 0 Key Laboratory of Yunnan Normal University for Photoelectric Materials & Device , Kunming 650500 , People's Republic of China 1 Key Laboratory of Yunnan Higher Education Institutes for Optoelectronic Information and Technology , Kunming 650500 , People's Republic of China 2 Institute of Physics and Electronic Information, Yunnan Normal University , Kunming 650500 , People's Republic of China 3 Key Laboratory of Yunnan Normal University for Photoelectric Materials & Device , Kunming 650500 , People's Republic of China 4 Key Laboratory of Yunnan Higher Education Institutes for Optoelectronic Information and Technology , Kunming 650500 , People's Republic of China 5 Department of Physics, State Key Laboratory for Mesoscopic Physics, Peking University , Beijing 100871 , People's Republic of China 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. SnO2 nanobelts; Y3+ doping; Gas sensor; Optical properties; Acetone - Background With the development of science and technology as well as people’s increasing concerns for the environment, considerable attentions are paid to efficiently and precisely detect and supervise flammable, explosive, or poisonous gases [1]. As a transparent n-type semiconductor with a band gap of 3.6 eV, SnO2 can be used as photoelectric devices, sensors, catalysts, and other functional materials [2]. Due to the unique physicochemical properties of SnO2 and enhanced sensing properties of nanostructured materials, quasi-one-dimensional (1D) SnO2 nanomaterials are being widely studied [3]. Various methods were developed to synthesize nanostructured SnO2 materials, such as the sol-gel method, liquid precursor method [4], electroplating tin thermal oxidation method [5], and chemical vapor deposition (CVD) method [6]. Therefore, synthesis of 1D nanostructured SnO2 materials has made great achievements [7, 8]. SnO2 with various morphologies such as nanoparticle, nanowire, nanosilk, nanosawtooth, nanobelt, or nanotube are obtained by the abovementioned methods [9–11], which can be used as building blocks for functional devices [12, 13]. Inherent small size effect and surface effect of nanomaterials make SnO2 possess particular physicochemical properties, which are beneficial for gas sensors and solar cells [14–17]. From the point view of pollution, acetone (a common reagent used widely in industries and labs) is harmful to human health. It is extensively used to dissolve plastic, purify paraffin, and dehydrate tissues in pharmaceutics [18]. Inhalation of acetone causes headache, fatigue, and even narcosis and harmfulness to the nerve system. Hence, it is necessary to monitor acetone concentration in the environment for health and safety purposes in the factory [19]. In this work, we undertake the study on the fabrication and characterization of the devices based on a single SnO2 nanobelt (NB)/Y-SnO2. After that, we systematically investigate the sensing properties of single SnO2 NB/Y-SnO2 NB device. Based on it, the influence of Y elements on the sensing properties of SnO2 NB is discussed. Methods Synthesis of Y-Doped SnO2 NBs Y-doped SnO2 NBs (hereafter denoted as “Y-SnO2 NBs”) were prepared by thermal evaporation technique. For synthesis of Y-SnO2 NBs, SnO2 powders with a purity of 99.99 % were mixed with Y powders (Yttrium (III) © The Author(s). 2016 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Fig. 1 The schematic diagram of the test system acetate tetrahydrate 99.99 %) in the weight ratio of 20:1 and then put into a ceramic boat. The boat was placed in the center of the alundum tube, which was installed in a high-temperature furnac (...truncated)


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Xinmin Li, Yingkai Liu, Shuanghui Li, Jieqing Huang, Yuemei Wu, Dapeng Yu. The Sensing Properties of Single Y-Doped SnO2 Nanobelt Device to Acetone, Nanoscale Research Letters, 2016, pp. 470, Volume 11, Issue 1, DOI: 10.1186/s11671-016-1685-1