以葡萄糖、硅粉为原料,采用水热法与焙烧结合成功地制备出一维SiC-SiO2纳米线,与常规SiC纳米线的制备方法相比,该法焙烧温度低,操作简单.运用红外特征光谱、扫描电子显微镜、X射线粉末衍射、原子力显微镜(atomic force microscope,AFM)...以葡萄糖、硅粉为原料,采用水热法与焙烧结合成功地制备出一维SiC-SiO2纳米线,与常规SiC纳米线的制备方法相比,该法焙烧温度低,操作简单.运用红外特征光谱、扫描电子显微镜、X射线粉末衍射、原子力显微镜(atomic force microscope,AFM)对其研究.结果表明:所制得的纳米线为SiC-SiO2复合的核-壳结构,SiC纳米线的外层均匀地包覆上了一薄层SiO2.纳米线长度几到几十微米不等,直径200 nm左右,球形纳米颗粒生长在纳米线上,这些球形颗粒为碳化硅和无定形硅氧化物.根据试验结果,分析了该方法制备SiC纳米线的生长机理为气-液-固反应.展开更多
Chengdu Branch,Chinese Science Academy,Chengdu610041)abstract:[Mn(ECZ)abstract: 3 ](NO 3 )abstract: 2 is newly prepared by the aqueous solutions of Mn(NO 3 )abstract: 2 and ethyl carbazate(ECZ)abstract:.The crystal st...Chengdu Branch,Chinese Science Academy,Chengdu610041)abstract:[Mn(ECZ)abstract: 3 ](NO 3 )abstract: 2 is newly prepared by the aqueous solutions of Mn(NO 3 )abstract: 2 and ethyl carbazate(ECZ)abstract:.The crystal structure has been determined by X-ray crystal diffraction analysis.It belongs to monoclinic with space group of P2 1 /n.The crystal parameters are:a=1.3974(2)abstract:nm,b=0.8796(2)abstract:nm,c=3.4322(7)abstract:nm,β=9 1.25(1)abstract:°,V=4.2175(1)abstract:nm 3 ,Z=8.Its molecular weight is491.30.Mn 2+ is located on the center of the molecular structure.Ethyl carbazate serves a s a bidentate ligand which coordinates to the metal cations with its carbonyl ox ygen atom and the terminal hydrazine nitrogen atom,forming five-member chelatin g rings,and three such rings are formed in each molecule.The coordination number of the metal ion is six and the coordination configuration of the cen-tral ion is octahedral.Specially,antimer configuration phenomenon is found in the molecu le.The complex is fur-ther characterized by element analysis and IR measurement s.The thermal decomposition mechanism is studied by using TG-DTG and DSC techni ques.CCDC:215675.展开更多
文摘以葡萄糖、硅粉为原料,采用水热法与焙烧结合成功地制备出一维SiC-SiO2纳米线,与常规SiC纳米线的制备方法相比,该法焙烧温度低,操作简单.运用红外特征光谱、扫描电子显微镜、X射线粉末衍射、原子力显微镜(atomic force microscope,AFM)对其研究.结果表明:所制得的纳米线为SiC-SiO2复合的核-壳结构,SiC纳米线的外层均匀地包覆上了一薄层SiO2.纳米线长度几到几十微米不等,直径200 nm左右,球形纳米颗粒生长在纳米线上,这些球形颗粒为碳化硅和无定形硅氧化物.根据试验结果,分析了该方法制备SiC纳米线的生长机理为气-液-固反应.
文摘Chengdu Branch,Chinese Science Academy,Chengdu610041)abstract:[Mn(ECZ)abstract: 3 ](NO 3 )abstract: 2 is newly prepared by the aqueous solutions of Mn(NO 3 )abstract: 2 and ethyl carbazate(ECZ)abstract:.The crystal structure has been determined by X-ray crystal diffraction analysis.It belongs to monoclinic with space group of P2 1 /n.The crystal parameters are:a=1.3974(2)abstract:nm,b=0.8796(2)abstract:nm,c=3.4322(7)abstract:nm,β=9 1.25(1)abstract:°,V=4.2175(1)abstract:nm 3 ,Z=8.Its molecular weight is491.30.Mn 2+ is located on the center of the molecular structure.Ethyl carbazate serves a s a bidentate ligand which coordinates to the metal cations with its carbonyl ox ygen atom and the terminal hydrazine nitrogen atom,forming five-member chelatin g rings,and three such rings are formed in each molecule.The coordination number of the metal ion is six and the coordination configuration of the cen-tral ion is octahedral.Specially,antimer configuration phenomenon is found in the molecu le.The complex is fur-ther characterized by element analysis and IR measurement s.The thermal decomposition mechanism is studied by using TG-DTG and DSC techni ques.CCDC:215675.
