Nanoflake-modified MgO microspheres prepared by flame spraying

Nanoflake-modified MgO microspheres prepared by flame spraying
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火焰喷涂制备纳米片改性MgO微球

DOI:
10.1016/j.matlet.2013.10.068
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发表时间:
2014-01
期刊:
影响因子:
3
通讯作者:
Yixiang Chen
Yixiang Chen
中科院分区:
材料科学3区
文献类型:
--
作者:
Guanghua Liu;Jiangtao Li;Feng Wang;Yixiang Chen

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采用火焰喷涂法制备了Mg(OH)2纳米片修饰的MgO微球,微球粒径为15-70 μm,纳米片厚度约为10 nm。Mg(OH)2纳米片可以通过在350 °C下煅烧2 h转化为MgO,并且在该相转变期间,纳米片形态得到很好的保留。MgO微球具有微/纳米复合结构,比表面积为21.6 m2/g,流动性良好。MgO微球的带隙能量和折射率估计为Eg =5.5 eV和n =1.826。
Novel MgO microspheres modified with Mg(OH)2nanoflakes were prepared by flame spraying, where the microspheres were 15–70 μm, and the nanoflakes had a thickness of about 10 nm. The Mg(OH)2nanoflakes could be converted into MgO by calcination at 350 °C for 2 h, and during this phase transformation the nanoflake morphology was well preserved. With a micro/nano-complex structure, the MgO microspheres showed acceptable flowability and specific surface area of 21.6 m2/g. The bandgap energy and refractive index of the MgO microspheres were estimated to beEg=5.5 eV andn=1.826.
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