Ammonia Gas Sensing Properties of Bismuth Oxide Thick Films and Its Structural, Optical, Morphological Characterization

IF 0.9 4区物理与天体物理 Q4 PHYSICS, CONDENSED MATTER

Physics of the Solid State Pub Date : 2024-11-14 DOI:10.1134/S1063783424601243

Mahendra S. Shinde, Abhinay S. Mandawade, Manoj A. More, Swapnil S. Tayade, Laxman N. Bhoy, Ganesh E. Patil

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Abstract

This paper successfully synthesized Bismuth oxide (Bi₂O₃) nanoparticles (NPs) using the sol–gel method as Bismuth nitrate pentahydrate as a precursor. The average crystallite size of the NPs was characterized by X-ray diffraction (XRD) analysis and the size of the NPs found to be 17 nm. For the band gap measurement UV-visible spectra of NPs were recorded and it was found to be 2.7 eV. The surface morphology of Bi₂O₃ NPs was examined through field emission scanning electron microscopy (FESEM) showing spherical nature-like morphology. The gas sensor was fabricated using as-prepared Bi₂O₃ NPs by standard screen-printing technique and it was tested for various gases such as NH₃, NO₂, ethanol, LPG, and methanol as a function of operating temperature. The effect of operating temperature and gas concentration were investigated in detail to understand Bi₂O₃ NPs sensor for NH₃ gas and found to be very efficient.

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氧化铋厚膜的氨气传感特性及其结构、光学和形态学表征

本文以五水硝酸铋为前驱体，采用溶胶-凝胶法成功合成了氧化铋（Bi2O3）纳米粒子（NPs）。通过 X 射线衍射 (XRD) 分析确定了 NPs 的平均晶粒尺寸，发现 NPs 的尺寸为 17 nm。为了测量 NPs 的带隙，记录了 NPs 的紫外可见光谱，发现其带隙为 2.7 eV。通过场发射扫描电子显微镜（FESEM）检查了 Bi2O3 NPs 的表面形态，显示出类似球形的形态。通过标准丝网印刷技术，利用制备的 Bi2O3 NPs 制作了气体传感器，并测试了各种气体（如 NH3、NO2、乙醇、液化石油气和甲醇）对工作温度的影响。详细研究了工作温度和气体浓度对 Bi2O3 NPs 传感器处理 NH3 气体的影响，结果发现该传感器非常高效。

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来源期刊

Physics of the Solid State 物理-物理：凝聚态物理

CiteScore

1.70

自引率

0.00%

发文量

审稿时长

2-4 weeks

期刊介绍： Presents the latest results from Russia’s leading researchers in condensed matter physics at the Russian Academy of Sciences and other prestigious institutions. Covers all areas of solid state physics including solid state optics, solid state acoustics, electronic and vibrational spectra, phase transitions, ferroelectricity, magnetism, and superconductivity. Also presents review papers on the most important problems in solid state physics.