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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.
Boron and carbon nitrogen (BCN) ternary compounds were successfully synthesized by solvothermal method using anhydrous acetonitrile, sodium azide and sodium tetrafluoroborate as raw materials and benzene as solvent at a temperature of 400 ℃. The synthesized products were characterized by X-ray powder diffraction (XRD), Fourier transform infrared (FTIR), transmission electron microscopy (TEM), selected area electron diffraction (SAED), X-ray energy dispersive spectroscopy (EDS) and electron energy loss spectroscopy (EELS) XRD and SAED analysis showed that the synthesized product was a hexagonal phase with a lattice constant of a = 0.2678nm and c = 0.6639nm. The TEM results showed that there were BCNs in nanorods and tetragonal blocks in the synthesized products. EELS and EDS analysis The results showed that the product consisted of three elements, B, C and N. The chemical formula was B0.23C0.60N0.17. The FTIR analysis showed that there were C-N, B-C and B-N bonds in the sample, indicating that B, C, Between the elements reached the atomic level combination.