کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5359917 1503674 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Quantum dots as mediators in gas sensing: A case study of CdS sensitized WO3 sensing composites
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Quantum dots as mediators in gas sensing: A case study of CdS sensitized WO3 sensing composites
چکیده انگلیسی
In this study the proof of principle of the use of naked semiconductor directly generated on metal oxide surface as mediators in gas sensing is provided. Successive ionic layer absorption and reaction (SILAR) technique has been applied to sensitize a WO3 thin film with CdS quantum dots. Response to gases of bare WO3 is deeply modified: quantum dots dramatically increase the metal oxide conductance, otherwise rather poor, and modify the capability of detecting environmental pollutants, such as CO and NO2. A modified sensing mechanism is proposed to rationalize the mediation exerted by the semiconducting active layer on the interaction between gaseous species and WO3 surface.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 290, 30 January 2014, Pages 295-300
نویسندگان
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