摘要
提出了一种多元醇法敞开体系下制备具有高比表面积的非晶态纳米碳颗粒的方法。以三甘醇作为高沸点溶剂溶解溴化铵,将溶解有二茂铁的无水乙醇在200℃有氧气氛下滴入三甘醇中,利用溴化铵与二茂铁在溶剂中反应制备尺寸均匀的纳米碳颗粒。通过X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)和氮气吸附-脱附等温线对纳米碳颗粒的微观结构进行了表征。结果表明碳颗粒近似为等轴状,尺寸分布在30～70nm之间,是完全的非晶态结构,比表面积为578.68m2/g,孔容为0.39cm3/g。反应物在三甘醇中的均匀溶解、反应是生成尺寸均一的纳米碳颗粒的主要因素。
A polyol synthesis method was developed for preparation of amorphous carbon nanoparticles with high specific surface area under ambient atmosphere by the reaction of ferrocene and ammonium bromide in triethyl- ene glycol （TREG） at 200℃. Samples were characterized by X-ray diffraction （XRD）, field-emission scanning electron microscopy （SEM）, transmission electron microscopy （TEM） and N2 adsorption-desorption isotherms. II was found that lhe nanoparticles were complete amorphous and agglomerate together due to the strong sur face tension. The amorphous carbon nanoparticles with a diameter of 30-70nm have a wide size distribution of mesopores with a brunauer-entmett-teller （BET） surface area of 578. 68m2/g. It was proposed that the dis solved reactants uniformly dispersing in the TREG could react at a molecular level to form uniform carbon nano-particles.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2012年第B08期145-148,共4页
Journal of Functional Materials
关键词
纳米碳颗粒
多元醇法
高比表面积
carbon nanoparticles
polyol synthesis
high specific surface area
