Synthesis of Sm doped SnO2 nanoparticles and their ethanol gas traces detection. Issue 18 (15th September 2021)

• Record Type: Journal Article
• Authors: An, Dongmin; Liu, Nan; Li, Yan; Zhou, Qingjun; Wang, Qiong; Zou, Yunling; Lian, Xiaoxue
• Is Part Of: Ceramics international. Volume 47:Issue 18(2021)
• Page Start: 26501
• Page End: 26510
• Publication Date: 2021-09-15
• Subjects: Sm -- SnO2 -- Ethanol -- Gas-sensing performance; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.06.063
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Metal oxide semiconductor-based sensors are widely used in medicine, industry, agriculture and environmental protection. In this paper, a series of different molar ratios of Sm were doped into SnO2 nanoparticles through a coprecipitation route. The as-obtained Sm/SnO2 nanocomposites were analyzed by X-ray diffraction, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, and transmission electron microscope. The results indicated that Sm doping reduced the size of SnO2 nanoparticles and an Sm-O-Sn bond formed on the surface of Sm/SnO2 nanocomposites. The gas-sensing examination of the Sm/SnO2 nanocomposite-based sensor was assessed, and the results displayed that the fabricated sensor with a 4% molar ratio of Sm-decorated SnO2 exhibited a high response (138.9) and outstanding selectivity towards ethanol gas at 160 °C, and the limit of detection was as low as 100 ppb, implying a potential application in trace gas detection. Finally, the enhancement response of the Sm-doped SnO2 nanocomposites was discussed.