Synthesis and characterization of nanostructured molybdenum oxynitride films fabricated by sub-atmospheric chemical vapor deposition.

Dřínek, Vladislav; Klementová, Mariana; Palatinus, Lukáš; Dytrych, Pavel; Fajgar, Radek; Jandová, Věra; Koštejn, Martin; Kupčík, Jaroslav

doi:https://dx.doi.org/10.1016/j.jallcom.2019.07.182

Number of the records: 1

Synthesis and characterization of nanostructured molybdenum oxynitride films fabricated by sub-atmospheric chemical vapor deposition.

1.

SYSNO ASEP	0507800
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Synthesis and characterization of nanostructured molybdenum oxynitride films fabricated by sub-atmospheric chemical vapor deposition.
Author(s)	Dřínek, Vladislav (UCHP-M)_{RID, ORCID, SAI} Klementová, Mariana (FZU-D)_{RID, ORCID} Palatinus, Lukáš (FZU-D)_{RID, ORCID} Dytrych, Pavel (UCHP-M)_{RID, ORCID, SAI} Fajgar, Radek (UCHP-M)_{RID, ORCID, SAI} Jandová, Věra (UCHP-M)_{RID, ORCID, SAI} Koštejn, Martin (UCHP-M)_{RID, SAI, ORCID} Kupčík, Jaroslav (UCHP-M)_{RID, ORCID, SAI}
Article number	151470
Source Title	Journal of Alloys and Compounds. - : Elsevier - ISSN 0925-8388 Roč. 808, NOV 5 (2019)
Number of pages	10 s.
Language	eng - English
Country	NL - Netherlands
Keywords	nanostructured materials ; nitride materials ; photoelectron microscopies ; vapor deposition
Subject RIV	CF - Physical ; Theoretical Chemistry
OECD category	Physical chemistry
Subject RIV - cooperation	Institute of Physics - Solid Matter Physics ; Magnetism
R&D Projects	EF16_019/0000760 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Method of publishing	Limited access
Institutional support	UCHP-M - RVO:67985858 ; FZU-D - RVO:68378271
UT WOS	000483694900070
EID SCOPUS	85070507497
DOI	10.1016/j.jallcom.2019.07.182
Annotation	To support the trend of a new green energy introduction in economics it has become urgent nowadays that more available and cheaper materials would substitute noble and/or expensive materials (Au, Ag, Pt, Pd, Ga …). Therefore, we studied molybdenum oxynitride films due to their catalytic properties. Molybdenum oxynitride films were fabricated by sub-atmospheric chemical vapor deposition (SACVD). According to Raman spectroscopy, grown platelets possessed MoO3 structure up to 12 at. % NH3 in NH3/air mixture. With the increasing amount of NH3 in the reaction atmosphere (16–25 at. % NH3), the films became heterogeneous containing Mo4O11 and MoO2 suboxides. Nanostructures – nanorods, nanoribbons developed gradually at those samples with highest concentrations of NH3 in the atmosphere (25–33 at. % NH3) whose structure was built by blocks of corner-sharing Mo-octaedra separated by double layers of edge-sharing Mo-octaedra, which was revealed by Electron Diffraction Tomography (EDT). X-ray Photoelectron Spectroscopy (XPS), similarly to Raman spectroscopy, showed a gradual rise of molybdenum suboxides with NH3 increase in the atmosphere, which was indicated by the successive appearance of Mo6+ → Mo5+ → Mo4+ species. As N 1s XPS signal was fully overlapped by the Mo 3d5/2 one, a new procedure of a standard selected was used for the estimation of the nitrogen content in the films. This material was capable of reducing water under illumination as found by Cycling Votammetry (CV).
Workplace	Institute of Chemical Process Fundamentals
Contact	Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
Year of Publishing	2020
Electronic address	http://hdl.handle.net/11104/0301847

Number of the records: 1