کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
744741 894402 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Acetone sensing property of ZnO quantum dots embedded on PVP
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Acetone sensing property of ZnO quantum dots embedded on PVP
چکیده انگلیسی

We report synthesis of ZnO quantum dot embedded in polyvinylpyrrolidone (PVP) matrix and its functioning as acetone sensor. The specimen is prepared via quenching technique where bulk ZnO powder is calcined at very high temperature of 1200 °C and then quenched into ice cold polyvinylpyrrolidone solution. The samples have been characterized by using UV/vis spectroscopy, X-ray diffraction study, high resolution transmission electron microscopy (HRTEM) and scanning electron microscopy (SEM). These studies infer the sizes of quantum dots to be within 10 nm. The prepared quantum dot samples have been tested for sensing acetone vapour by exploring the variation of their resistance with time at different operating temperatures. It has been revealed that ZnO quantum dots can sense acetone at low operating (230 °C) temperature with less response time.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 148, Issue 2, 15 July 2010, Pages 353–357
نویسندگان
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