کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7146414 | 1462087 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The room-temperature sensing performance of ZnO nanorods for 2-methoxyethanol solvent
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
Quasi-vertically aligned zinc oxide nanorod (ZnO NR) arrays were synthesized via hydrothermal processing on glass substrates coated with a conductive layer of aluminium-doped zinc oxide (AZO). Different characterization techniques were used to study the phase structures, surface morphology and elemental composition of the prepared nanorods, including X-ray diffraction (XRD), field emission scanning microscopy (FE-SEM) and X-ray photoelectron spectroscopy (XPS). The sensing behaviour of the ZnO NR arrays has been demonstrated toward different concentrations of 2-methoxyethanol solvent, a highly toxic organic compound. The sensitivity of the prepared sensor is 24 nA/(ppm cmâ2) and 60 nA/(ppm cmâ2) at applied voltages of 5 V and 10 V, respectively. Its limit of detection (LoD) is 190 ± 5 ppm independently of the applied voltage. The mechanism of the sensing behaviour was explained based on the charge-transfer mechanisms.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 203, November 2014, Pages 223-228
Journal: Sensors and Actuators B: Chemical - Volume 203, November 2014, Pages 223-228
نویسندگان
N.H. Al-Hardan, Azman Jalar, M.A. Abdul Hamid, Lim Kar Keng, R. Shamsudin, B.Y. Majlis,