High-Yield Synthesis of Helical Carbon Nanofibers Using Iron Oxide Fine Powder as a Catalyst

Crystals

Yoshito Umeda¹  Yoshiyuki Suda²  Tetsuo Iida²  Hirofumi Takikawa²  Koji Maruyama²  Kazuki Shimizu³  Hitoshi Ue⁴ 

[1] Corporate Research Department, Toho Gas Co., Ltd., Nagoya, Aichi 456-8511, Japan;Department of Electrical and Electronic Information Engineering, Toyohashi Universityof Technology, Toyohashi, Aichi 441-8580, Japan;Development Department, Shonan Plastic Manufacturing Co., Ltd., Hiratsuka, Kanagawa 254-0807, Japan;Fuji Research Laboratory, Tokai Carbon Co., Ltd., Oyama, Shizuoka 410-1431, Japan;

关键词: carbon nanocoil;    carbon nanomaterials;    chemical vapor deposition;    nanodevices;    catalyst metals;   

DOI  :  10.3390/cryst5010047

来源: DOAJ

【 摘 要 】

Carbon nanocoil (CNC), which is synthesized by a catalytic chemical vapor deposition (CCVD) method, has a coil diameter of 300–900 nm and a length of several tens of μm. Although it is very small, CNC is predicted to have a high mechanical strength and hence is expected to have a use in nanodevices such as electromagnetic wave absorbers and field emitters. For nanodevice applications, it is necessary to synthesize CNC in high yield and purity. In this study, we improved the conditions of catalytic layer formation and CCVD. Using optimized CVD conditions, a CNC layer with a thickness of >40 μm was grown from a SnO2/Fe2O3/SnO2 catalyst on a substrate, and its purity increased to 81% ± 2%.

【 授权许可】

Unknown