以廉价的煤和Na2 SiO3·9H2O为原料,辅以Fe(NO3)3·9H2O为助剂,在1300℃氩气气氛下通过碳热还原反应制备出碳化硅纳米颗粒.采用X射线分析衍射仪(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、荧光光谱仪(PL)和低温氮吸附-脱附对所制备的碳化硅样品进行了表征.结果表明,制得的p-SiC纳米颗粒尺寸介于20～60nm,当n(Fe)/n(Si) =0.01时,碳化硅颗粒比表面积最高,为32m2/g.
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