2024-03-29T12:32:53Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/2189992021-12-28T15:36:08Zcom_10261_31com_10261_3col_10261_284
Light-induced sulfur transport inside single-walled carbon nanotubes
Sedelnikova, Olga V.
Gurova, Olga A.
Makarova, Anna A.
Fedorenko, Anastasiya D.
Nikolenko, Anton D.
Plyusnin, Pavel E.
Arenal, Raúl
Bulusheva, Lyubov G.
Okotrub, Alexander V.
Russian Science Foundation
German-Russian Interdisciplinary Science Center
Ministerio de Economía y Competitividad (España)
European Commission
Gobierno de Aragón
This article belongs to the Section 2D and Carbon Nanomaterials.
Filling of single-walled carbon nanotubes (SWCNTs) and extraction of the encapsulated species from their cavities are perspective treatments for tuning the functional properties of SWCNT-based materials. Here, we have investigated sulfur-modified SWCNTs synthesized by the ampoule method. The morphology and chemical states of carbon and sulfur were analyzed by transmission electron microscopy, Raman scattering, thermogravimetric analysis, X-ray photoelectron and near-edge X-ray absorption fine structure spectroscopies. Successful encapsulation of sulfur inside SWCNTs cavities was demonstrated. The peculiarities of interactions of SWCNTs with encapsulated and external sulfur species were analyzed in details. In particular, the donor–acceptor interaction between encapsulated sulfur and host SWCNT is experimentally demonstrated. The sulfur-filled SWCNTs were continuously irradiated in situ with polychromatic photon beam of high intensity. Comparison of X-ray spectra of the samples before and after the treatment revealed sulfur transport from the interior to the surface of SWCNTs bundles, in particular extraction of sulfur from the SWCNT cavity. These results show that the moderate heating of filled nanotubes could be used to de-encapsulate the guest species tuning the local composition, and hence, the functional properties of SWCNT-based materials.
2020-09-02T10:32:47Z
2020-09-02T10:32:47Z
2020
artículo
Nanomaterials 10(5): 818 (2020)
http://hdl.handle.net/10261/218999
10.3390/nano10050818
2079-4991
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100006769
http://dx.doi.org/10.13039/100007651
http://dx.doi.org/10.13039/501100010067
32344811
eng
Publisher's version
https://doi.org/10.3390/nano10050818
Sí
info:eu-repo/grantAgreement/EC/H2020/823717
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2016-79776-P
https://creativecommons.org/licenses/by/4.0/
openAccess
Multidisciplinary Digital Publishing Institute