کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
742872 1462096 2014 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
(Ti,Sn) solid solutions as functional materials for gas sensing
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
(Ti,Sn) solid solutions as functional materials for gas sensing
چکیده انگلیسی

Metal-oxide semiconductors are widely used as functional materials for gas sensing because of their chemoresistive effect when interacting with ambient gases. For this work, nanosized TixSn1−xO2 have been synthesized at increasing Ti molar ratio (x = 0, 0.1, 0.2, 0.25, 0.3, 0.5, 0.7, 0.8, 0.9, 0.95, 1) and extensively investigated through a wide variety of characterizations. It turned out that the merging process of the two single oxides formed new compounds with improved gas responses compared to pure TiO2 and also to pure SnO2. Moreover, all investigated physico-chemical characteristics resulted tuneable through the titanium content in the solid solution. Each characterization carried out onto TixSn1−xO2 solid solutions made it possible to identify two classes of materials with SnO2-like or TiO2-like behaviours, the best CO response being on the intersection of the two species of materials. Moreover, a very interesting analysis on the generally accepted electrical transport model through polycrystalline semiconductors has been carried out. Indeed, the comparison with experimental evidences has highlighted a conduction mechanism not previously considered.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 194, April 2014, Pages 195–205
نویسندگان
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