Chlorinated holey double-walled carbon nanotubes for relative humidity sensors

Chlorinated holey double-walled carbon nanotubes for relative humidity sensors Full article

Journal

Carbon
ISSN: 0008-6223 , E-ISSN: 1873-3891

Output data

Year: 2019, Volume: 148, Pages: 413-420 Pages count : 8 DOI: 10.1016/j.carbon.2019.04.010

Tags

Double-walled carbon nanotubes; Holey nanotubes; Chlorination; Relative humidity sensor

Authors

Bulusheva L.G. ^1,2 , Sysoev V.I. ^1,2 , Lobiak E.V. ¹ , Fedoseeva Yu.V. ^1,2 , Makarova A.A. ³ , Dubois M. ⁴ , Flahaut E. ⁵ , Okotrub A.V. ^1,2

Affiliations

1	Nikolaev Institute of Inorganic Chemistry, SB RAS, 3 Acad. Lavrentiev Ave, 630090 Novosibirsk, Russia
2	Novosibirsk State University, 2 Pirogova Str, 630090 Novosibirsk, Russia
3	Institute of Solid State and Material Physics, Dresden University of Technology, 01062 Dresden, Germany
4	Universite Clermont Auvergne, Sigma Clermont, CNRS, ICCF, 24 Blaise Pascal Ave., 63000 Clermont-Ferrand, France
5	CIRIMAT, Universite de Toulouse, CNRS, INPT, UPS, UMR CNRS-UPS-INP N5085, Universite Toulouse 3 Paul Sabatier, Bat.CIRIMAT, 118, route de Narbonne, 31062 Toulouse cedex 9, France

A chemical procedure for modification of double-walled carbon nanotubes (DWCNTs) to enhance their response to humidity was developed. The DWCNTs walls were etched by hot concentrated sulfuric acid, after what the edge carbon sites were saturated by chlorine via reaction with CCl4 vapor. This treatment increases the dispersibility of DWCNTs in solvents, removes oxygen groups, and produces chlorine-decorated holes in the outer walls. Networks of chlorinated holey DWCNTs showed a high repeatable response to humid environment and a good reversible behavior after the sensor purging by dry air. The density functional theory calculations predict enhanced polarization of the DWCNTs when they contain chlorine-decorated holes in the outer walls and physisorption of H2O molecules near chlorine atoms. These two effects are the cause of an intense low-noise signal to gaseous H2O and easy sensor recovery.

Bulusheva L.G. , Sysoev V.I. , Lobiak E.V. , Fedoseeva Y.V. , Makarova A.A. , Dubois M. , Flahaut E. , Okotrub A.V.
Chlorinated holey double-walled carbon nanotubes for relative humidity sensors
Carbon. 2019. V.148. P.413-420. DOI: 10.1016/j.carbon.2019.04.010 WOS Scopus РИНЦ OpenAlex

Web of science:	WOS:000468421900045
Scopus:	2-s2.0-85064492429
Elibrary:	38947689
OpenAlex:	W2935339247

DB	Citing
Web of science	38
Scopus	37
Elibrary	31
OpenAlex	47