کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1812321 1025613 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Formaldehyde gas sensing property and mechanism of TiO2–Ag nanocomposite
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Formaldehyde gas sensing property and mechanism of TiO2–Ag nanocomposite
چکیده انگلیسی

We report the microstructure and gas-sensing properties of anatase TiO2 doped with Ag nanocomposite prepared by the sol–gel method. In particular, we focus on the effect of Ag dopant on the formaldehyde (H2CO) sensing behavior of TiO2-based sensor. We found that formaldehyde gas response of TiO2 was enhanced evidently by adding Ag. Further investigation based on first principles calculation shows that TiO2–Ag (1 0 1) surface enables high adsorbance of H2CO molecule and receives larger charge from adsorbed gas molecules, which are responsible for the excellent sensing performance observed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 405, Issue 19, 1 October 2010, Pages 4235–4239
نویسندگان
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