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首页> 外文期刊>Bulletin of Materials Science >Synthesis and characterization of M_3V_2O_8 (M=Ca, Sr and Ba) by a solid-state metathesis approach
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Synthesis and characterization of M_3V_2O_8 (M=Ca, Sr and Ba) by a solid-state metathesis approach

机译:固态复分解法合成和表征M_3V_2O_8(M = Ca,Sr和Ba)

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摘要

A solid-state metathesis approach initiated by microwave energy has been successfully applied for the synthesis of orthovanadates, M_3V_2O_8 (M=Ca, Sr, and Ba). The structural, vibrational, thermal, optical and chemical properties of synthesized powders are determined by powder X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, differential scanning calorimetry, magnetic property measurements and diffused reflectance spectra in the UV-VIS range. The direct bandgap of the synthesized materials was found to be 3-55+-0.2 eV, 3.75+-0.2 eV and 3.57+-0.2 eV for Ca_3V_2O_8,Sr_3V_2O_8 and Ba_3V_2O_8, respectively.
机译:由微波能量引发的固态复分解方法已成功应用于原钒酸盐M_3V_2O_8(M = Ca,Sr和Ba)的合成。合成粉末的结构,振动,热,光学和化学性质由粉末X射线衍射,扫描电子显微镜,X射线光电子能谱,傅立叶变换红外光谱,差示扫描量热法,磁性能测量和扩散反射光谱确定。 UV-VIS范围。发现对于Ca_3V_2O_8,Sr_3V_2O_8和Ba_3V_2O_8,合成材料的直接带隙分别为3-55 + -0.2eV,3.75 + -0.2eV和3.57 + -0.2eV。

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