Boron- and nitrogen-doped single-walled carbon nanohorns with graphite-like thin sheets prepared by CO₂ laser ablation method

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• 作者：Ryota Yuge^a ; ^{r-yuge@bk.jp.nec.com" class="auth_mail" title="E-mail the corresponding author} ; Shunji Bandow^b ; Masako Yudasaka^c ; Kiyohiko Toyama^a ; Sumio Iijima^d ; Takashi Manako^a
• 刊名：Carbon
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：111
• 期：Complete
• 页码：675-680
• 全文大小：1898 K

文摘

Boron- and nitrogen-codoped single walled carbon nanohorns (BN-SWCNHs) were prepared by CO₂ laser ablation of a boron-containing carbon target under nitrogen atmosphere. The structures were spherical SWCNH aggregates containing many graphite-like thin sheets (GLSs), which was different from general SWCNHs. X-ray photoelectron spectra indicated that the doped quantities of boron and nitrogen were about 1.2 and 1.0 at.%, respectively. The boron and nitrogen atoms were implanted partially as the BN bonding in a graphene lattice, although they were also implanted individually as three-fold coordinated sp² bonding. The boron-doped GLSs were preferentially prepared by CO₂ laser ablation of a boron-containing carbon target under argon atmospheres. As a result, we found that the boron accelerated the formation of GLSs. The simple CO₂ laser ablation method will be useful for heteroatoms doping into carbon nanohorns.