摘要
以NiSO4·6H2O、NaH2PO2·H2O和形核诱导剂(NaBH4)为原料,通过液相还原法制备了不同物质的量比的镍磷粉末。用其作为催化剂,以石墨为基体,乙炔为碳源,氮气为保护气成功合成了螺旋状碳纤维,并用扫描电子显微镜(SEM)、扫描探针显微镜(SPM)对产物进行表征。结果表明:镍磷粉末粒径范围在100~300 nm之间,所制得的螺旋碳纤维直径在0.2~0.4 μm之间,说明碳纤维的直径与催化剂存在一定相关性。碳纤维的形貌与合成温度有关:当温度为700 ℃时,螺旋碳纤维呈现柱状形态,纤维缠绕十分紧密,纤维长度可达3~6 μm;温度为750 ℃时,产物为弹簧状的双螺旋纤维结构,长度可达40~100 μm。
NiSO4·6H2O, NaH2PO2·H2O and nucleation inducer (NaBH4) were used as raw materials to prepare Ni-P powders by liquid phase reduction method. Helical carbon nano-fibers were synthesized by using graphite as a substrate and Ni-P nanopowder as a catalyst through chemical vapor deposition, where acetylene was the carbon source and nitrogen was the shielding gas. The products were characterized using SEM and SPM. The results show that Ni-P particles have the particle size of 100-300 nm, and the diameter of the prepared helical carbon fiber ranges from 0.2 μm to 0.4 μm, suggesting that the diameter of carbon fibers is associated with that of the catalyst. The morphology of helical carbon nanofibers is correlated with the synthesis temperature. When the synthesis temperature is 700 ℃, the helical carbon fibers exhibit a cylindrical shape and twin tightly. Its length is up to 3-6 μm. When the temperature is 750 ℃, the products is double helix spring form, and the length reaches 40-100 μm.
作者
任娇
金永中
陈建
何刚
潘银贵
龚勇
REN Jiao;JIN Yong-zhong;CHEN Jian;HE Gang;PAN Yin-gui;GONG Yong(Department of Materials Science and Engineering,Sichuan University of Science and Engineering,Zigong 643000,China)
出处
《粉末冶金工业》
CAS
北大核心
2018年第6期15-18,共4页
Powder Metallurgy Industry
基金
国家自然科学基金项目(51572177)
四川省科技厅项目(2016GZ0224,2017JY0158)
四川理工学院研究生创新基金项目(y2016028)
关键词
镍磷粉末
螺旋碳纤维
催化剂
粒径
Ni-P powder
helical carbon nanofiber
catalyst
particle size
