Seyedeh Faezeh Hashemi Karouei, Mahdi Shaddoust, Abbas Bagheri Khatibani, Arefeh Rezapour, Mohammad Hadi Ahmadi
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引用次数: 0
摘要
在这项工作中，采用溶胶-凝胶技术制备了原始氧化锌和掺铜粉末。研究了样品的重要物理性质，如形态、光学和结构特征。为研究样品的物理特征，收集了不同的数据，包括 X 射线衍射（XRD）、场发射扫描电子显微镜（FESEM）、能量色散 X 射线光谱（EDS）、布鲁纳-艾美特-泰勒分析（BET）、紫外-可见分光光度法和傅立叶变换红外光谱（FTIR）。此外，还研究了所制备样品的乙二醇蒸汽传感能力，并与乙醇、甲醇、丙酮、异丙醇和二甲基甲酰胺等其他蒸汽进行了比较。结果表明，样品对乙二醇具有很好的选择性（氧化锌的选择性高达 50 倍，氧化铜-氧化锌 20% 的选择性高达 13 倍）。此外，还评估了原始氧化锌和掺铜纳米结构的最重要传感参数，即工作温度、实时变化、灵敏度和响应/恢复时间。具体而言，氧化锌纳米结构传感器对浓度分别为 200 和 700 ppm 的乙二醇的灵敏度分别为 37 和 139。
Prominent ethylene glycol sensing of sol–gel-derived ZnO and Cu-ZnO nanostructures
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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