Enhanced Photoluminescence from Very Thin Double-Wall Carbon Nanotubes Synthesized by the Zeolite-CCVD Method
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- 作者：Naoki Kishi ; Satoshi Kikuchi ; Palanisamy Ramesh ; Toshiki Sugai ; Yasuyuki Watanabe ; Hisanori Shinohara
- 刊名：Journal of Physical Chemistry B
- 出版年：2006
- 出版时间：December 14, 2006
- 年：2006
- 卷：110
- 期：49
- 页码：24816 - 24821
- 全文大小：442K
- 年卷期：v.110,no.49(December 14, 2006)
- ISSN：1520-5207
文摘
Photoluminescence (PL) from purified (>90%) double-wall carbon nanotubes (DWNTs), which have beensynthesized by zeolite catalyst-supported chemical vapor deposition (zeolite-CCVD), of very small diameters(0.8-nm average inner tube) is reported. The PL contour mappings for various ratios (1-90%) of double-versus single-wall carbon nanotubes by thermal oxidation have enabled us to unambiguously identify thechirality of inner tubes for the DWNTs synthesized. After the extensive high-temperature oxidation at 700
C, high-purity (>90%) DWNTs of ~0.8 nm inner diameter are obtained, and most of these correspond tothe DWNTs having inner tubes with chiralities of (7,5), (7,6), and (9,4).
C, high-purity (>90%) DWNTs of ~0.8 nm inner diameter are obtained, and most of these correspond tothe DWNTs having inner tubes with chiralities of (7,5), (7,6), and (9,4).