کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1570616 1514375 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Morphology-controlled synthesis and microwave absorption properties of β-MnO2 microncube with rectangular pyramid
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Morphology-controlled synthesis and microwave absorption properties of β-MnO2 microncube with rectangular pyramid
چکیده انگلیسی


• β-MnO2 microncube has been synthesized via a simple aqueous chemical route.
• The crystal type changed from γ-MnO2 to β-MnO2 and the morphology changed to a microncube with rectangular pyramid.
• The evolution process of the β-MnO2 structure is proposed to involve two main stages.
• β-MnO2 has certain dielectric loss properties.
• An effective absorption bandwidth of 3.5 GHz was achieved from the β-MnO2/paraffin wax composite.

β-MnO2 microncube is a novel morphology of microncube with rectangular pyramid. It has been synthesized for the first time via a simple aqueous chemical route under hydrothermal conditions without any templates. When the reaction time is increased from 1 h to 10 h, the crystal type changed from γ-MnO2 to β-MnO2 and the morphology changed from an urchin-like shape to a microncube with rectangular pyramid. We propose a possible growth mechanism for intrinsic structural growth mechanism, the evolution process of the β-MnO2 structure is proposed to involve two main stages. Besides, the electromagnetic properties of the synthesized β-MnO2 were investigated. It shows that β-MnO2 has certain dielectric loss properties and an effective absorption bandwidth (reflection loss lower than − 10 dB) of 3.5 GHz was achieved from the β-MnO2/paraffin wax composite.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 112, February 2016, Pages 206–212
نویسندگان
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