03 خرداد 1403
محمود ناصري

محمود ناصری

مرتبه علمی: دانشیار
نشانی:
تحصیلات: دکترای تخصصی / فیزیک-نانو
تلفن: 08132355404
دانشکده: دانشکده علوم پایه

مشخصات پژوهش

عنوان
Preparation and gas-sensing performances of Cr2O3-decorated ZnO nanostructures grown in a boundary layer of non-uniform thickness for low-working temperature H2S detection
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Cr2O3-ZnO; Boundary layer; Sensor; Hierarchical structure; Hydrogen sulfide
سال
2019
مجله CHEMICAL PHYSICS LETTERS
پژوهشگران محمود ناصری

چکیده

New insights into controlling boundary layer thickness are investigated in growth of hierarchical metal oxides on a tilted substrate. Cr2O3-decorated ZnO nanostructures with different densities and lengths were successfully synthesized by a combination of chemical and physical techniques and investigated as a H2S sensor. By tilting the substrate relative to the incoming gas flow, a boundary layer of non-uniform thickness was created over the substrate. The sensing results of Cr2O3-ZnO hierarchical structures indicated that decoration of the Cr2O3 nano-particles on ZnO nanostructures significantly enhanced the response to H2S, Liquefied petroleum gas and ethanol at low temperature.