کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1281288 1497499 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydrogen sensing properties of ZnO nanorods: Effects of annealing, temperature and electrode structure
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Hydrogen sensing properties of ZnO nanorods: Effects of annealing, temperature and electrode structure
چکیده انگلیسی


• ZnO nanorods were prepared by hydrothermal method.
• H2 sensing of the nanorods was investigated depending on various parameters.
• The higher sensor response was observed for Pd coated sample compared to un-coated.
• The as-prepared sample showed better sensor response due to surface charge number.

In this study, the hydrogen (H2) sensing properties of vertically aligned zinc oxide (ZnO) nanorods were investigated depending on annealing, Pd coating, temperature and electrode structure. ZnO nanorods were fabricated by using hydrothermal method on a glass substrate and an indium tin oxide (ITO) coated glass substrate. In order to determine the effects of annealing on the H2 sensor performance, the nanorods were heated at 500 °C in dry air. H2 sensing measurements were done in the temperature range of 25–200 °C. It was found that, the sensor response of Pd coated ZnO nanorods were much higher than the un-coated nanorods due to the catalytic effect of Pd thin film. Moreover, the un-annealed samples showed better sensor response than the annealed samples due to the number of oxygen deficiency. In addition, the lateral electrode structure showed higher sensor response than the sandwich electrode structure.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 10, 26 March 2014, Pages 5194–5201
نویسندگان
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