99超碰中文字幕在线观看-天天干天天日天天舔婷婷-我看操逼的好看的女人的-日本一二三四五区日韩精品

今天給大家分享的是2014年1月份《Journal of the American Chemical Society》上發(fā)表的一篇名為：Sidewall Chlorination of Carbon Nanotubes by Iodine Trichloride。

文章摘要如下：

The halogenation of carbon nanotubes is of great interest, as it allows the modification of the tube properties or it can serve as primary functionalization for a subsequent covalent fixing. Large degrees of fluorination can be reached although chlorine fixing is preferred, if halogenation is used as primary functionalization, as it is a better leaving group. Here, we report an extensive chlorination of multiwalled carbon nanotubes (MWCNTs) by I2Cl6. The reaction has been studied in acetic acid (AC) and in carbon tetrachloride (TC). The influence of the solvent is critical, as the functionalization is not relevant when the reaction is carried out in AC, while it reaches up to 13 atom % when the solvent is TC. Moreover, chlorine functionalization occurs in defects and borders of the tubes when the solvent is AC, while chlorine is largely fixed on the tube walls when TC is the reaction solvent. These different results are due to iodine trichloride coming out in different chemical species depending on the solvent. The correlation of the TPD and XPS spectra has allowed assignment of the fixed chlorine atoms to five chemical environments. None of the samples show intercalation of chlorine as deduced from X-ray diffraction data.

該文章中材料表征采用的是美國麥克儀器ASAP 2020，使用該儀器獲得材料氮氣吸附脫附等溫線。

詳情可參考下面鏈接：

http://pubs.acs.org/doi/abs/10.1021/jp411935g