Research output: Contribution to journal › Article › peer-review
Fluorinated Surface of Carbon Nanotube Buckypaper for Uniform Growth of CdS Nanoparticles. / Fedoseeva, Yu V.; Arkhipov, V. E.; Maksimovskiy, E. A. et al.
In: Journal of Physical Chemistry C, Vol. 121, No. 35, 07.09.2017, p. 19182-19190.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Fluorinated Surface of Carbon Nanotube Buckypaper for Uniform Growth of CdS Nanoparticles
AU - Fedoseeva, Yu V.
AU - Arkhipov, V. E.
AU - Maksimovskiy, E. A.
AU - Gusel'nikov, A. V.
AU - Mikhlin, Yu L.
AU - Zhuravlev, K. S.
AU - Senkovskiy, B. V.
AU - Larionov, S. V.
AU - Bulusheva, L. G.
AU - Okotrub, A. V.
N1 - Publisher Copyright: © 2017 American Chemical Society.
PY - 2017/9/7
Y1 - 2017/9/7
N2 - Interfacial interactions between CdS species and multiwalled carbon nanotubes (MWCNTs) determine the architecture and optical characteristics of CdS/MWCNT hybrids. The effect of fluorinated surface of MWCNT buckypaper on the decoration with CdS nanoparticles from an ammonia solution of cadmium(II) chloride and thiourea has been studied. Scanning electron microscopy showed that the fluorinated carbon surface provides more dense growth and uniform distribution of CdS nanoparticles. X-ray photoelectron and near-edge X-ray absorption fine structure spectroscopies revealed a partial defluorination of the nanotubes and the formation of elemental sulfur as a result of a joint action of thiourea and ammonia. The carbon atoms freed of fluorine were found from density functional theory calculations to be active sites for attachment of Cd(II) complexes present in the chemical bath and subsequent growth of CdS nanoparticles. The obtained hybrid possesses dual photoluminescence from fluorinated MWCNTs and CdS nanoparticles. Under applied electric field, it emits blue light that is possible only for very small CdS nanocrystals. This work provides a concept for fabrication of CNT-based hybrid structures with the high density of semiconducting nanoparticles for optoelectronic applications. (Graph Presented).
AB - Interfacial interactions between CdS species and multiwalled carbon nanotubes (MWCNTs) determine the architecture and optical characteristics of CdS/MWCNT hybrids. The effect of fluorinated surface of MWCNT buckypaper on the decoration with CdS nanoparticles from an ammonia solution of cadmium(II) chloride and thiourea has been studied. Scanning electron microscopy showed that the fluorinated carbon surface provides more dense growth and uniform distribution of CdS nanoparticles. X-ray photoelectron and near-edge X-ray absorption fine structure spectroscopies revealed a partial defluorination of the nanotubes and the formation of elemental sulfur as a result of a joint action of thiourea and ammonia. The carbon atoms freed of fluorine were found from density functional theory calculations to be active sites for attachment of Cd(II) complexes present in the chemical bath and subsequent growth of CdS nanoparticles. The obtained hybrid possesses dual photoluminescence from fluorinated MWCNTs and CdS nanoparticles. Under applied electric field, it emits blue light that is possible only for very small CdS nanocrystals. This work provides a concept for fabrication of CNT-based hybrid structures with the high density of semiconducting nanoparticles for optoelectronic applications. (Graph Presented).
KW - MULTIWALL NANOTUBES
KW - CADMIUM-SULFIDE
KW - PHOTOLUMINESCENCE
KW - SPECTROSCOPY
KW - ABSORPTION
KW - DEFECTS
KW - DENSITY
KW - FILMS
KW - XPS
UR - http://www.scopus.com/inward/record.url?scp=85029225605&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.7b04640
DO - 10.1021/acs.jpcc.7b04640
M3 - Article
AN - SCOPUS:85029225605
VL - 121
SP - 19182
EP - 19190
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 35
ER -
ID: 9047973