کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7138766 1462015 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Au decoration of vertical hematite nanotube arrays for further selective detection of acetone in exhaled breath
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Au decoration of vertical hematite nanotube arrays for further selective detection of acetone in exhaled breath
چکیده انگلیسی
Vertically ordered hematite nanotubes decorated with Au nanoparticles are synthesized by a facile electrochemical anodization method and self-agglomeration of Au films. Au decoration significantly enhances the response of hematite nanotubes to acetone at 350 °C and the response to acetone is 2.4 times higher than the response to ethanol, the counterpart target gas. The Au nanoparticles decorated hematite nanotubes exhibit unprecedentedly high and selective responses to acetone at 350 °C with 50% relative humidity condition (calibrated at room temperature, 25 °C). The enhanced gas sensing properties in a humid condition were attributed to the spillover effect by Au nanoparticles and high porosity of hematite nanotubes with a large surface-to-volume ratio. These results indicate that Au nanoparticles decorated hematite nanotubes are promising for use in high quality sensor materials for breath analyzers to diagnose diabetes mellitus.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 274, 20 November 2018, Pages 587-594
نویسندگان
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