期刊
NANOSCALE
卷 14, 期 3, 页码 953-961出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1nr04019g
关键词
-
类别
资金
- National Natural Science Foundation of China [92161124, 52002165, 21631002]
- Shenzhen Basic Research Project [JCYJ20170817113121505, JCYJ20210324104808022]
- National Key Research and Development Program of China [2021YFA0717400]
- Beijing National Laboratory for Molecular Sciences [BNLMS202013, BNLMSCXTD-202001]
- Shenzhen KQTD Project [KQTD20180411143400981]
- Guangdong Provincial Natural Science Foundation [2021A1515010229]
- Guangdong Provincial Innovation Project [2019KTSCX155]
- Guangdong Provincial Key Laboratory of Catalysis [2020B121201002]
- SUSTech
The method of selectively separating single-walled carbon nanotubes (SWCNTs) by redox polyoxometalate clusters in aqueous solution offers a promising approach for achieving high-quality SWCNT separation without harsh sonication, addressing a long-standing challenge in the field.
The selective separation of soluble and individual single-walled carbon nanotubes (SWCNTs) in aqueous solution is a key step for harnessing the extraordinary properties of these materials. Manipulating the strong van der Waals intertube interactions between the SWCNT bundles is very important in selective separation, which is a long-standing challenge. Here we reported the ability of redox polyoxometalate clusters to modulate the intertube pi-pi stacking interaction through electron transfer and achieved the diameter-selective separation of SWCNTs in a surfactant aqueous solution. The large-diameter SWCNTs concentrated at similar to 1.3-1.4 nm were selectively separated when similar to 1 nm clusters encapsulated within the tube cavity, and the dispersion of subnanometer similar to 0.7-0.9 nm SWCNTs was boosted when clusters were adsorbed on the outer surface of small-diameter nanotubes. The mechanism of diameter-selective separation of SWCNTs associated with the size-dependent interaction between cluster-tubes and the steric hindrance effect of clusters was revealed by optical absorption and Raman spectroscopy. This simple method thus enables the selective separation of individual high-quality SWCNTs in aqueous solutions without harsh sonication with the potential for other separation applications.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据