A solvothermal method has successfully applied to prepare hexagonal boron carbonitride from CH3CN,NaN3 and NaBF4 in benzene at 400 ℃.The synthesized product was characterized by X-ray pow-der diffraction（XRD）,Fourier transform infrared spectroscopy（FTIR）,transmission electron microscopy（TEM）,select area electron diffraction（SAED）,X-ray energy-dispersive spectroscopy（EDS）,and electron energy loss spectroscopy（EELS）.XRD and SAED indicated that the synthesized product are h-BCN with the lattice constants of a=0.2678 nm and c=0.6639 nm.TEM images reveal that the products mainly con-sist of nanorods and quartet prism-like nanostructure.The results of EELS and EDS suggested that the product was composed of elements of B,C and N,and the chemical formula was B0.23C0.60N0.17.FTIR ex-hibited that the product had C-N,B-C and B-N bonds,indicating that an atomic-level hybrid of the three elements was synthesized.%采用溶剂热合成方法,以无水乙腈、叠氮化钠和四氟硼酸钠为原料,以苯为溶剂,在温度为400℃条件下,成功合成出了硼碳氮（BCN）三元化合物.利用X射线粉末衍射（XRD）、Fourier变换红外光谱（FTIR）、透射电子显微镜（TEM）、选区电子衍射（SAED）、X射线能谱（EDS）和电子能量损失谱（EELS）对合成产物进行了表征.XRD和SAED分析表明,合成产物为六方相,晶格常数为a=0.2678nm,c=0.6639nm;TEM结果表明,合成产物中存在纳米棒和四方柱状块体BCN;EELS和EDS分析表明,产物由B,C,N三种元素组成,化学式为B0.23C0.60N0.17;FTIR分析表明样品中存在C—N,B—C和B—N键,表明B,C,N三元素之间达到了原子级化合.
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