Synthesis and Microstructure of Iridium Coatings on Carbon Fibers | Sciact - CRIS-system of Boreskov Institute of Catalysis

Synthesis and Microstructure of Iridium Coatings on Carbon Fibers Full article

Journal

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

Output data

Year: 2013, Volume: 56, Pages: 243-254 Pages count : 12 DOI: 10.1016/j.carbon.2013.01.006

Tags

Atomic force microscopy; Carbon fibers; Chemical bonds; Coatings; Extended X ray absorption fine structure spectroscopy; Metallorganic chemical vapor deposition; Microstructure; Model structures; Van der Waals forces; X ray diffraction

Authors

Baklanova N.I. ¹ , Morozova N.B. ² , Kriventsov V.V. ³ , Titov A.T. ⁴

Affiliations

1	Institute of Solid State Chemistry and Mechanochemistry SB RAS, Kutateladze St. 18, Novosibirsk 630128, Russia
2	Nikolaev Institute of Inorganic Chemistry SB RAS, Lavrentiev Ave. 3, Novosibirsk 630090, Russia
3	Boreskov Institute of Catalysis SB RAS, Lavreniev Ave. 5, Novosibirsk 630090, Russia
4	Institute of Geology and Mineralogy SB RAS, Koptyug Ave. 3, Novosibirsk 630090, Russia

Funding (3)

1	Russian Foundation for Basic Research	12-03-01039 (01201258422)
2	Russian Foundation for Basic Research	12-03-01154
3	The Ministry of Education and Science of the Russian Federation	14.518.11.7022

Uniform, adherent, and non-bridging iridium coatings were applied to polyacrylonitrile-derived (ex-PAN) carbon fibers using low temperature metal organic chemical vapor deposition (MOCVD) from iridium (III) acetylacetonate. Composition, morphology, texture and topography of the iridium coated carbon fibers depending on MOCVD parameters have been studied by scanning electron microscopy/energy dispersive spectroscopy, atomic force microscopy, X-ray diffraction and extended X-ray absorption fine structure (EXAFS). For the MOCVD parameters studied, metallic iridium is the main phase of the coating. Together with iridium, a carbon-containing phase can be also present in the coating. The interatomic distances, corresponded coordination numbers and structural/microstructural parameters were established. The dependence of the microstructure of the Ir-coated carbon fibers on MOCVD parameters and possible structural models are discussed in detail. EXAFS showed that the Ir–O chemical bond on the boundary between the carbon fiber and the iridium coating is either absent or its contribution is too small to be detected by this method. Iridium appears to be bound to carbon fiber only by van der Waals forces. The data obtained by all methods are in a good agreement.

Baklanova N.I. , Morozova N.B. , Kriventsov V.V. , Titov A.T.
Synthesis and Microstructure of Iridium Coatings on Carbon Fibers
Carbon. 2013. V.56. P.243-254. DOI: 10.1016/j.carbon.2013.01.006 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Nov 2, 2012
Accepted:	Jan 6, 2013
Published online:	Jan 15, 2013
Published print:	May 1, 2013

Web of science:	WOS:000317700200029
Scopus:	2-s2.0-84875221720
Elibrary:	20438832
Chemical Abstracts:	2013:172213
Chemical Abstracts (print):	158:425513
OpenAlex:	W2026762525

DB	Citing
Web of science	15
Scopus	16
Elibrary	17
OpenAlex	13