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Development of Diamond-Carbon Nanotube Hybrid Materials

金刚石-碳纳米管杂化材料的研制

基本信息

批准号：
14350429
负责人：
SUZUKI Toshimitsu
金额：
$ 9.54万
依托单位：
Kansai University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14350429/
关键词：
Diamond Methane Ethane Nickel Palladium TEM Carbon Fiber Carbon nanotube エチレンシリカ CVD

项目摘要

Diamond has unique physical properties and recent progress in CVD diamond process provided semi-conductor diamond thin films. We have first discovered that several metals or metal oxide loaded on powdered diamonds surface exhibited very high catalytic activities in several reactions involving methane and lower hydrocarbons. This research is extent ion of diamond catalyzed reactions of hydrocarbons on metal loaded oxidized diamond to give diamond and carbon nanotube hybrid materials. Diamond is composed of sp3 carbons whereas carbon nanotube is composed of sp2 carbons. If diamond and carbon nanotube hybrid materials could be synthesized, unique physical properties would be expected. From these perspectives, this research was planned and synthesis of diamond-carbon nanotube hybrid material was successfully achieved.Several iron group metal loaded diamond powder was hydrogen reduced and reacted with methane and ethane at an elevated temperature of 400 to 800 ℃. Ni and Pd loaded diamond af … More forded a large amount of carbon nanofibers. On Ni-loaded case the maximum rate of carbon was obtained at 500 ℃ with methane and 600 ℃ with ethane, and from both hydrocarbons no nanofiber formation was observed at 650 ℃. Very small amount of carbon nanofibers were obtained on Co and Fe loaded diamond irrespective of the reaction temperature. On Fe-loaded diamond at 1000 ℃, very small amount of single wall carbon nanotube directly bonded to diamond surface was obtained by TEM observation.On the contrary, with Pd-loaded case carbon nanofibers were produced at higher temperature of 500 to 800 ℃, and even at 800 ℃ a large amount of carbon nanofibers were produced both from methane and ethane. In addition, at 800 ℃ with ethane as a carbon source over Pd-loaded diamond catalyst, very thick carbon fibers were produced by the combinations of initially produced thin carbon fibers.Metal catalyzed carbon nanofiber growth mechanism by the decomposition of hydrocarbon was clarified and this shed light to the design of the catalyst and growth conditions. Less

金刚石具有独特的物理性质，近年来CVD金刚石工艺的发展为金刚石薄膜的制备提供了新的途径。我们首次发现负载在金刚石表面的几种金属或金属氧化物在甲烷和低级烃的几个反应中表现出很高的催化活性。本研究是金刚石催化碳氢化合物在负载金属的氧化金刚石上反应制备金刚石/碳纳米管杂化材料的进一步研究。金刚石由sp3碳组成，而碳纳米管由sp2碳组成。如果能够合成金刚石和碳纳米管的杂化材料，将有望获得独特的物理性能。从这些角度出发，本研究计划并成功实现了金刚石-碳纳米管杂化材料的合成，将几种铁族金属负载金刚石粉末在400 ~ 800 ℃的高温下与甲烷和乙烷进行氢气还原反应。载镍钯金刚石AF ...更多信息发现了大量的碳纳米纤维在Ni负载的情况下，甲烷和乙烷在500 ℃和600 ℃时的碳生成速率最大，而在650 ℃时两种烃均未观察到碳的生成。无论反应温度如何，在负载Co和Fe的金刚石上都得到了非常少量的碳纳米纤维。在1000 ℃时，Fe负载金刚石表面生成了少量的单壁碳纳米管，而Pd负载金刚石表面在500 ~ 800 ℃时生成了大量的碳纳米纤维，甚至在800 ℃时，甲烷和乙烷都生成了大量的碳纳米纤维。此外，在800 ℃下，以乙烷为碳源，在负载Pd的金刚石催化剂上，合成的细碳纤维与合成的粗碳纤维相结合，得到了较粗的碳纤维，阐明了金属催化烃类分解生长碳纤维的机理，为催化剂的设计和生长条件的优化提供了理论依据。少

项目成果

期刊论文数量（18）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

K.Nakagawa, T.Ando, N.Ikenaga, T.Suzuki: "Oxidized diamond as a simultaneous production medium of carbon nanotube and hydrogen for fuel cell"Chemistry of Materials. 15,24. 4571-4575 (2003)

K.Nakakawa、T.Ando、N.Ikenaga、T.Suzuki：“氧化金刚石作为燃料电池中碳纳米管和氢的同时生产介质”材料化学。

DOI：
发表时间：
期刊：
影响因子：
0
作者：
通讯作者：

Oxidized Diamond as a Simultaneous Production Medium of Carbon Nanomaterials and Hydrogen for Fuel Cell.

氧化金刚石作为燃料电池用碳纳米材料和氢气的同时生产介质。

DOI：
10.1002/chin.200406008
发表时间：
2004
期刊：
影响因子：
0
作者：
K. Nakagawa;M. Yamagishi;Hiroaki Nishimoto;N. Ikenaga;Toshimitsu Suzuki;Tetsuhiko Kobayashi;M. Nishitani;T. Ando
通讯作者：
T. Ando

N.Ikenaga, K.Nakagawa, T.Ando, T.Suzuki: "A green Process for the Production of Carbon Nano-tubes in Organic Liquid"1st International Conference on Green & Sustainable Chemistry Proceedings. A-26 (2003)

N.Ikenaga、K.Nakakawa、T.Ando、T.Suzuki：“有机液体中生产碳纳米管的绿色工艺”第一届国际绿色会议