新型炭材料Issue(3)：222-229,8.DOI:10.1016/S1872-5805(15)60187-1
热解炭中原位熔盐催化SiC纳米线的合成及表征
Synthesis and characterization of silicon carbide nanowires from lignin-phenolic resin and silicon powder with an in-situ formed molten salt as catalyst
摘要
Abstract
Silicon carbide ( SiC) nanowires were synthesized using lignin-phenolic resin ( LPR) and silicon powder as raw materi-als. The morphology and structures of the nanowires were characterized by scanning electron microscopy, transmission electron mi-croscopy and X-ray diffraction. The influence of reaction conditions on the growth of the nanowires was investigated by thermody-namic analysis. It was revealed that the growth of the nanowires starts at around 1 100℃ by a vapor-liquid-solid ( VLS) mechanism and the growth temperature is lower than that for the formation of SiC nanowires from commercial phenolic resin and silicon powder. The nanowires have diameters of 30-100 nm and lengths of several microns. It was revealed that the inorganic salts are formed in-si-tu from LPR in the lignin segment as liquid catalyst droplets during pyrolysis. These dissolve SiC and become supersaturated, from which SiC nanowires grow along the [1 1 1] direction by the stacking of (1 1 1) planes.关键词
SiC纳米线/生长机理/微观结构/原位熔盐Key words
SiC nanowires/Growth mechanism/Microstructure/In-situ moltensalt分类
化学化工引用本文复制引用
王富成,赵雷,方伟,何漩,梁峰,陈辉,陈欢,杜星..热解炭中原位熔盐催化SiC纳米线的合成及表征[J].新型炭材料,2015,(3):222-229,8.基金项目
国家重点基础研究发展计划(973计划,2012CB722702) （973计划,2012CB722702）
耐火材料与冶金国家重点实验室开放基金(2014QN17).@@@@National Basic Research Program of China (973 Program,2012CB722702) （2014QN17）
Open Foundation of the State Key Laboratory of Refractories and Metallurgy (2014QN17) （2014QN17）
