Stability of Fluorinated Double-Walled Carbon Nanotubes Produced by Different Fluorination Techniques

被引：50

作者：

Bulusheva, L. G. ^{[1
]}

Fedoseeva, Yu. V. ^{[1
]}

Okotrub, A. V. ^{[1
]}

Flahaut, E. ^{[2
,3
]}

Asanov, I. P. ^{[1
]}

Koroteev, V. O. ^{[1
]}

Yaya, A. ^{[4
]}

Ewels, C. P. ^{[4
]}

Chuvilin, A. L. ^{[5
,6
]}

Felten, A. ^{[7
]}

Van Lier, G. ^{[8
]}

Vyalikh, D. V. ^{[9
]}

机构：

[1] SB RAS, Nikolaev Inst Inorgan Chem, Novosibirsk, Russia

[2] Univ Toulouse 3, Ctr Interuniv Rech & Ingn Mat, F-31062 Toulouse, France

[3] Inst Carnot Cirimat, CNRS, F-31062 Toulouse, France

[4] Univ Nantes, CNRS, Inst Mat Jean Rouxel, Nantes, France

[5] CIC NanoGUNE Consolider, E-20018 San Sebastian, Spain

[6] IKERBASQUE, Basque Fdn Sci, Bilbao, Spain

[7] Fac Univ Notre Dame Paix, Lab Interdisciplinaire Spectroscopie Electron, Namur, Belgium

[8] Free Univ Brussels, Vrije Univ Brussel, Res Grp Gen Chem ALGC, B-1050 Brussels, Belgium

[9] Tech Univ Dresden, Inst Solid State Phys, D-01062 Dresden, Germany

来源：

CHEMISTRY OF MATERIALS | 2010年 / 22卷 / 14期

关键词：

RAMAN-SPECTROSCOPY; X-RAY; SINGLE; IDENTIFICATION; PHOTOELECTRON; ABSORPTION; BEHAVIOR;

D O I：

10.1021/cm100677c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Double-walled carbon nanotubes (DWCNTs) have been fluorinated using (1) gaseous F-2 at 200 degrees C, (2) a mixture of BrF3 and Br-2 at room temperature, and (3) radio frequency CF4 plasma. The stability of the resultant samples was examined by thermogravimetric analysis in an inert atmosphere and by comparing the X-ray photoelectron spectra of the pristine samples with those after heating in vacuum at either 70 degrees C for 10 h or 120 degrees C for 20 h. The DWCNTs fluorinated by F-2 showed the highest stability (the temperature of decomposition is around 396 degrees C), while the BrF3 and plasma-fluorinated DWCNTs lose fluorine from 150 degrees C. Prolonged annealing of the fluorinated DWCNTs in vacuum at a temperature below 150 degrees C also resulted in the defluorination of the samples. Fluorine atoms leave the DWCNT surface together with carbon atoms leading to defects in the graphitic network. These defects are likely to be centers for later functionalization by oxygen-containing groups during DWCNT storage.

引用

页码：4197 / 4203

页数：7

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