کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8000563 1516274 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Shape-regulated synthesis of cobalt oxide and its gas-sensing property
ترجمه فارسی عنوان
سنتز شکل گرفته از اکسید کبالت و املاح حساس به گاز آن
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
چکیده انگلیسی
Hierarchical and hexagonal cobalt oxide with porous structure was synthesized via a precipitation route followed by calcination. The shape and crystal size of cobalt oxide were greatly dependent on the chemicals and calcination temperature. The as-synthesized cobalt oxide reserved the shape of its hydroxide precursor. The calcination temperature was a key factor for controlling the pore volume and crystal sizes of as-prepared Co3O4 samples. The cobalt oxide prepared under different conditions was characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and nitrogen physisorption analysis. The gas-sensing properties were measured by a gas sensor measurement system using Co3O4 samples as a sensor material. The influence of gas concentrations, specific surface area and crystals size of Co3O4 on sensing properties were investigated. The porous hierarchical cobalt oxide with a small crystal size and high surface area showed a high response to ethanol vapor, while cobalt oxide platelets with a large crystal size and macropore exhibited a high response to acetone vapor.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 619, 15 January 2015, Pages 361-367
نویسندگان
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