Mechanochemical Synthesis of Nanocrystalline Olivine-Type Mg2SiO4 and MgCoSiO4
Mechanochemical Synthesis of Nanocrystalline Olivine-Type Mg2SiO4 and MgCoSiO4
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DOI：
10.3390/cryst12030369
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发表时间：
2022-03
期刊：
影响因子：
2.7
通讯作者：
Phuong-Hieu T. Nguyen;W. McKenzie;Dongzhou Zhang;Jingui Xu;R. Rapp;J. Bradley;P. Dera
中科院分区：
文献类型：
--
作者：
Phuong-Hieu T. Nguyen;W. McKenzie;Dongzhou Zhang;Jingui Xu;R. Rapp;J. Bradley;P. Dera
以氧化物为原料，采用机械化学方法成功合成了平均粒径为27 nm和31 nm的橄榄石结构Mg2SiO4和MgCoSiO4纳米晶。两种纳米晶产品在铣削360 min后得到，具有高浓度的Mg2SiO4（>94%）和MgCoSiO4(>95%)，以及少量的WC（~3%）污染物，这些污染物来自磨球和磨室的碎屑。在磨矿试验过程中，对磨缸的宏观温度监测记录到峰值温度为75℃。采用XRD、TEM、SAED、EDS等分析技术对合成产物进行了表征。
Nanocrystalline olivine-structured Mg2SiO4 and MgCoSiO4, with an average particle size of 27 nm and 31 nm, respectively, were successfully synthesized from oxide precursors via mechanochemical methods. The two nanocrystalline products were obtained after milling for 360 min and displayed high concentrations of Mg2SiO4 (>94%) and MgCoSiO4 (>95%), together with minor amounts of WC (~3%) contaminant originating as debris abraded off milling balls and chambers. The macroscopic temperature monitoring of the grinding jars during milling trials recorded a peak temperature of 75 °C. A combination of analytical techniques that included XRD, TEM, SAED, and EDS were employed for the characterization of the synthesized products.