| 以K_2CO_3为催化剂气相沉积纳米碳纤维 |
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| 引用本文： | 张金云,张永恒.以K_2CO_3为催化剂气相沉积纳米碳纤维[J].青岛科技大学学报,2009,30(4):292-296. |
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| 作者姓名： | 张金云 张永恒 |
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| 作者单位： | 青岛科技大学,材料科学与工程学院,山东,青岛,266042 |
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| 基金项目： | 国家自然科学基金项目，山东省教育厅科技项目，教育部博士点基金项目，青岛科技计划项目 |
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| 摘 要： | 气相制备纳米碳纤维目前所用的催化剂多为过渡金属Fe、Co、Ni及其合金,这些金属的引入使得纳米碳纤维的提纯必须用强酸,这一过程不但对设备要求较高,且杂质不易除净。本研究采用由前驱体法和微乳液法制备的水溶性碱金属K2CO3为催化剂、乙炔为碳源在不同温度下气相沉积纳米碳纤维。结果表明,前驱体法制备的K2CO3催化剂比微乳液法制备的K2CO3催化剂沉积纳米碳纤维产率要高很多(600℃时,产率高13倍),600℃是较佳的沉积温度,并且得出600℃适合螺旋形纤维的生长,而700℃适合线形纤维的生长。
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| 关 键 词： | 水溶性催化剂 K2CO3 纳米碳纤维 纳米结构 |
Study on Synthesis of Carbon Nanofibers by Chemical Vapor Deposition Using K_2CO_3 Catalyst |
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| ZHANG Jin-yun,ZHANG Yong-heng.Study on Synthesis of Carbon Nanofibers by Chemical Vapor Deposition Using K_2CO_3 Catalyst[J].Journal of Qingdao University of Science and Technology:Natutral Science Edition,2009,30(4):292-296. |
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| Authors: | ZHANG Jin-yun ZHANG Yong-heng |
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| Affiliation: | College of Materials Science and Engineering;Qingdao University of Science and Technology;Qingdao 266042;China |
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| Abstract: | Most catalysts in preparing carbon nanofibers by chemical vapor deposition are transition metals such as Fe,Co and Ni.However,strong acids must be used to purify the products.This process requires high-level equipments and part of impurities can not be removed easily.In this study,carbon nanofibers were obtained by chemical vapor depostiton using water-soluble K2CO3 as catalyst,which were obtained by two methods: precursor and micro-emulsion,using acetylene(C2H2) gas as carbon resource.The results showed th... |
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| Keywords: | K2CO3 |
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