کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
751068 895188 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and enhanced gas sensing properties of crystalline CeO2/TiO2 core/shell nanorods
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Synthesis and enhanced gas sensing properties of crystalline CeO2/TiO2 core/shell nanorods
چکیده انگلیسی

Crystalline CeO2/TiO2 core/shell nanorods were fabricated by a hydrothermal method and a subsequent annealing process under the hydrogen and air atmosphere. The thickness of the outer shell composed of crystal TiO2 nanoparticles can be tuned in the range of 5–11 nm. The crystal core/shell nanorods exhibited enhanced gas-sensing properties to ethanol vapor in terms of sensor response and selectivity. The calculated sensor response based on the change of the heterojunction barrier formed at the interface between CeO2 and TiO2 is agreed with the experimental results, and thus the change of the heterojunction barrier at different gas atmosphere can be used to explain the enhanced ethanol sensing properties.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 156, Issue 2, August 2011, Pages 867–874
نویسندگان
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