采用溶剂热法合成出硫化镍, 并将其作为催化剂, 催化热解乙炔制备出微螺旋炭纤维. 通过SEM、FT-IR和XRD分析了催化剂和微螺旋炭纤维的形貌和微观结构. 结果表明: 硫化镍催化颗粒表面光滑、为规则的六方相结构, 直径为1~2 μm; 微螺旋炭纤维具有双螺旋结构, 截面为矩形, 具有相同的螺径. 微螺旋炭纤维分子结构中既含有不饱和的C=C双键, 又含有饱和的-CH2-和-CH3基团, 其微观结构整体有序度较差, 存在一定量的无定型炭和晶体缺陷, 石墨化度低.
Carbon microcoils (CMCs) were synthesized by the catalytic decomposition of acetylene using nickel sulfide particles as the catalyst which prepared by solvothermal method. The morphology and microstructure of the catalyst and micro-coiled carbon fibers were examined by SEM, FT-IR and XRD. The results showed that the catalyst was regular hexagonal phase nickel sulfide with its diameter of 1-2 μm and a smooth surface. CMCs have double helix structure, rectangular cross-section and identical coil diameter. The molecular structure of CMCs contained both unsaturated –C=C– and saturated –CH2– and –CH3 groups. The microstructure of CMCs was of poor degree of order with a low graphitization degree, containing a certain amount of amorphous carbon and crystal defects.
参考文献
| [1] | |
| [2] | |
| [3] | Fejes D, Hernadi K. A review of the properties and CVD synthesis of coiled carbon nanotubes. Materials, 2010, 3(4): 2618-2642.[2] Davis W R, Slawson R J, Rigby G R. An unusual form of carbon. Nature, 1953, 171: 756.[3] ZHAO Dong-Lin, SHEN Zeng-Min. Microucve permitivity of microcoiled carbon fibers. Journal of Inorganic Materials, 2003, 8(5): 1057-1062.[4] Furuya Y, Hashishin T, Iwanaga H, et al. Interaction of hydrogen with carbon coils at low temperature. Carbon, 2004, 42(2): 331-335.[5] BI Hui, KOU Kai-Chang, WANG Zhao-Di, et al. Effect of grophitization on the morphologies and miorostructure of micro- cailed carbon fibons. Journal of Inorganic Materials, 2008, 23(2): 398-402.[6] Yang S M, Chen X Q, Motojima S. Tactile sensing properties of protein-like single-helix carbon microcoils. Carbon, 2006, 44(15): 3352-3355.[7] Chen X Q, Hasegawa M, Yang S M, et al. Preparation of carbon microcoils by catalytic methane hot-wire CVD proces. Thin Solid Films, 2008, 516(5): 714-717.[8] Yang S M, Ozeki I, Chen X Q, et al. Preparation of single-helix carbon microcoils by catalytic CVD process. Thin Solid Films, 2008, 516(5): 718-721.[9] Kuzuya C, Kohda M, Hishikawa Y, et al. Preparation of carbon micro-coils with the application of outer and inner electromagnetic field and bias voltage. Carbon, 2002, 40(11): 1991-2001.[10] Kuzuya C, Hayashi Y, Motojima S. Preparation of carbon micro- coils involving the decomposition of hydrocarbons using PACT(plasma and catalyst technology reactor). Carbon, 2002, 40(7): 1071-1077.[11] Yang S, Chen X, Kusunoki M, et al. Microstructure and microscopic deposition mechanism of twist-shaped carbon nanocoils based on the observation of helical nanoparticles on the growth tips. Carbon, 2005, 43(5): 916-922.[12] Ren X, Zhang H, Cui Z L. Acetylene decomposition to helical carbon nanofibers over supported copper catalysts. Materials Research Bulletin, 2007, 42(12): 2202-2210.[13] 于立岩, 张 乾, 崔作林(YU Li-Yan, et al). 螺旋纳米碳纤维的制备与表征. 高等学校化学学报(Chemical Journal of Chinese University), 2005, 26(5): 5-8.[14] 毕 辉, 寇开昌, 张教强, 等. CVD法制备微螺旋炭纤维的研究. 人工晶体学报, 2007, 36(3): 559-564.[15] 李崇俊, 马伯信, 霍肖旭(LI Chong-Jun, et al). 炭/炭复合材料石墨化度的表征. 新型炭材料(New Carbon Materials), 1999, 14(1): 19-25.[16] 汤中华, 周桂芝, 熊 杰, 等(TANG Zhong-Hua, et al). 炭/炭复合材料石墨化度的XRD均峰位法测定. 中国有色金属学报 |
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