کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7142878 | 1462056 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Controlled synthesis of flower-like In2O3 microrods and their highly improved selectivity toward ethanol
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Controlled synthesis of flower-like In2O3 microrods and their highly improved selectivity toward ethanol Controlled synthesis of flower-like In2O3 microrods and their highly improved selectivity toward ethanol](/preview/png/7142878.png)
چکیده انگلیسی
In this study, well-defined, flower-like In2O3 microrods were successfully synthesized by a facile one-step hydrothermal method and subsequent calcination. Various techniques such as scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), and N2 adsorption-desorption analyses were employed to clarify the feature of as-prepared product, including morphology, crystal structure and BET surface area. Appreciable control on the morphology of as-synthesized In2O3 samples was attained by altering the weight ratio of glucose and urea. The results show that the flower-like In2O3 microrods are formed in presence of glucose and urea, owing to the synergistic effect of the template role of glucose carbon spheres and Ostwald ripening under an alkaline environment. Moreover, the ethanol gas sensing properties of the flower-like In2O3 microrods were further investigated. Because of the structural merits including porosity and easily penetrable multiple rods, the sensor based on these flower-like In2O3 microrods exhibited superior sensitivity toward ethanol with a limit of detection lower to 1Â ppm. In addition, improved selectivity to ethanol of this sensor is also demonstrated in other interfering gases, including formaldehyde, methanol, toluene, acetone, carbon oxides (CO) and Hydrogen (H2). Also, the ethanol sensor displays a good repeatability. These results thereby demonstrate a potential application in a gas sensor for detecting ethanol vapor.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 235, 1 November 2016, Pages 86-93
Journal: Sensors and Actuators B: Chemical - Volume 235, 1 November 2016, Pages 86-93
نویسندگان
Feng Huang, Wei Yang, Fei He, Shantang Liu,