Seyedeh Faezeh Hashemi Karouei, Mahdi Shaddoust, Abbas Bagheri Khatibani, Arefeh Rezapour, Mohammad Hadi Ahmadi
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引用次数: 0
Abstract
Within this work, pristine zinc oxide and copper-doped powders were prepared using a sol–gel technic. Important physical properties such as morphological, optical, and structural features of the samples have been studied. Different data including X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDS), and Brunauer-Emmett-Teller analysis (BET), UV–Vis spectrophotometry, and Fourier transform infrared spectroscopy (FTIR) were collected to investigate the physical features of the samples. In addition, the ethylene glycol vapor sensing capability of the prepared samples was investigated and compared with other vapors like as ethanol, methanol, acetone, isopropanol, and dimethylformamide. The results demonstrated that the samples have a very good selectivity to ethylene glycol (up to 50 times for ZnO and 13 times for Cu-ZnO 20%). The most important parameters of sensing namely operating temperature, real-time variation, sensitivity, and response/recovery times were also evaluated for pristine zinc oxide and copper-doped nanostructures. Specifically, the ZnO nanostructure sensor represented prominent sensitivity of about 37 and 139 towards ethylene glycol concentrations of 200 and 700 ppm, respectively.
期刊介绍：
The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.
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