1
|
Weber D, Huber M, Gorelik TE, Abakumov AM, Becker N, Niehaus O, Schwickert C, Culver SP, Boysen H, Senyshyn A, Pöttgen R, Dronskowski R, Ressler T, Kolb U, Lerch M. Molybdenum Oxide Nitrides of the Mo 2(O,N,□) 5 Type: On the Way to Mo 2O 5. Inorg Chem 2017; 56:8782-8792. [PMID: 28714697 DOI: 10.1021/acs.inorgchem.7b00551] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Blue-colored molybdenum oxide nitrides of the Mo2(O,N,□)5 type were synthesized by direct nitridation of commercially available molybdenum trioxide with a mixture of gaseous ammonia and oxygen. Chemical composition, crystal structure, and stability of the obtained and hitherto unknown compounds are studied extensively. The average oxidation state of +5 for molybdenum is proven by Mo K near-edge X-ray absorption spectroscopy; the magnetic behavior is in agreement with compounds exhibiting MoVO6 units. The new materials are stable up to ∼773 K in an inert gas atmosphere. At higher temperatures, decomposition is observed. X-ray and neutron powder diffraction, electron diffraction, and high-resolution transmission electron microscopy reveal the structure to be related to VNb9O24.9-type phases, however, with severe disorder hampering full structure determination. Still, the results demonstrate the possibility of a future synthesis of the potential binary oxide Mo2O5. On the basis of these findings, a tentative suggestion on the crystal structure of the potential compound Mo2O5, backed by electronic-structure and phonon calculations from first principles, is given.
Collapse
Affiliation(s)
- Dominik Weber
- Institut für Chemie, Technische Universität Berlin , Straße des 17. Juni 135, 10623 Berlin, Germany.,Physikalisch-Chemisches Institut, Justus-Liebig-Universität Gießen , Heinrich-Buff-Ring 10-14, 35392 Gießen, Germany
| | - Manop Huber
- Institut für Chemie, Technische Universität Berlin , Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Tatiana E Gorelik
- Institut für Physikalische Chemie, Johannes Gutenberg-Universität Mainz , Welderweg 11, 55099 Mainz, Germany.,Institute of Inorganic and Analytical Chemistry, Johann Wolfgang Goethe-University Frankfurt am Main , Max-von-Laue-Straße 7, 60438, Frankfurt am Main, Germany
| | - Artem M Abakumov
- Center for Electrochemical Energy Storage, Skolkovo Institute of Science and Technology , Nobelstraße 3, 143025 Moscow, Russia.,Electron Microscopy for Material Science, University of Antwerp , Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Nils Becker
- Institut für Anorganische Chemie, RWTH Aachen University , Landoltweg 1, 52056 Aachen, Germany
| | - Oliver Niehaus
- Institut für Anorganische und Analytische Chemie, Universität Münster , Corrensstraße 30, 48149 Münster, Germany
| | - Christian Schwickert
- Institut für Anorganische und Analytische Chemie, Universität Münster , Corrensstraße 30, 48149 Münster, Germany
| | - Sean P Culver
- Physikalisch-Chemisches Institut, Justus-Liebig-Universität Gießen , Heinrich-Buff-Ring 10-14, 35392 Gießen, Germany
| | - Hans Boysen
- Department für Geo- und Umweltwissenschaften, Sektion Kristallographie, LMU München , Theresienstraße 41, 80333 München, Germany
| | - Anatoliy Senyshyn
- Heinz Maier-Leibnitz Zentrum, Technische Universität München , 85748 Garching, Germany
| | - Rainer Pöttgen
- Institut für Anorganische und Analytische Chemie, Universität Münster , Corrensstraße 30, 48149 Münster, Germany
| | - Richard Dronskowski
- Institut für Anorganische Chemie, RWTH Aachen University , Landoltweg 1, 52056 Aachen, Germany
| | - Thorsten Ressler
- Institut für Chemie, Technische Universität Berlin , Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Ute Kolb
- Institut für Physikalische Chemie, Johannes Gutenberg-Universität Mainz , Welderweg 11, 55099 Mainz, Germany
| | - Martin Lerch
- Institut für Chemie, Technische Universität Berlin , Straße des 17. Juni 135, 10623 Berlin, Germany
| |
Collapse
|
2
|
Lüdtke T, Weber D, Schmidt A, Müller A, Reimann C, Becker N, Bredow T, Dronskowski R, Ressler T, Lerch M. Synthesis and characterization of metastable transition metal oxides and oxide nitrides. Z KRIST-CRYST MATER 2016. [DOI: 10.1515/zkri-2016-1961] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
New routes to vanadium sesquioxide and tantalum oxide nitride (γ- and δ-phase) are presented. Phase pure V2O3 with bixbyite-type structure, a metastable polymorph, was obtained from vanadium fluoride hydrates at ~750 K. It crystallizes in the cubic crystal system in space group
I
a
3
¯
$Ia\bar 3$
with lattice parameter a=939.30(5) pm. The catalytical properties of the corresponding oxide nitride phases and their oxidation and reduction solid-state kinetics were investigated. The preparation of γ-TaON as a phase pure sample can be realized by ammonolysis of X-ray amorphous tantalum oxide precursors at 1073 K. This metastable tantalum oxide nitride crystallizes in the monoclinic VO2(B)-type structure in space group C2/m. The same precursors can be used to synthesize the δ-modification with an anatase-type structure at 1023 K. It crystallizes in the tetragonal crystal system in space group I41/amd. A maximum yield of 82 m % could be obtained. The fundamental band gaps of the synthesized and of other metastable TaON polymorphs were calculated from first principles using the GW method. The present results are compared to experimental data and to previous calculations at hybrid DFT level.
Collapse
Affiliation(s)
- Tobias Lüdtke
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, D-10623 Berlin, Germany
| | - Dominik Weber
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, D-10623 Berlin, Germany
| | - Alexander Schmidt
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, D-10623 Berlin, Germany
| | - Alexander Müller
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, D-10623 Berlin, Germany
| | - Christoph Reimann
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, University of Bonn, Beringstraße 4, D-53115 Bonn, Germany
| | - Nils Becker
- Chair of Solid-State and Quantum Chemistry, Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
| | - Thomas Bredow
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, University of Bonn, Beringstraße 4, D-53115 Bonn, Germany
| | - Richard Dronskowski
- Chair of Solid-State and Quantum Chemistry, Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
| | - Thorsten Ressler
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, D-10623 Berlin, Germany
| | - Martin Lerch
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, D-10623 Berlin, Germany
| |
Collapse
|
3
|
Kwak BS, Kim KM, Jo SW, Do JY, Kang S, Park M, Park NK, Lee TJ, Lee ST, Kang M. Characterizations of bimetallic NiV-supported SiO 2 catalysts prepared for effectively hydrogen evolutions from ethanol steam reforming. J IND ENG CHEM 2016. [DOI: 10.1016/j.jiec.2016.03.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
5
|
Bahlawane N, Lenoble D. Vanadium Oxide Compounds:Structure, Properties, and Growth from the Gas Phase. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/cvde.201400057] [Citation(s) in RCA: 104] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Naoufal Bahlawane
- Nanomaterials Research Unit, SAM Department; Centre de Recherche Public - Gabriel Lippmann; 41, rue du Brill 4422 Belvaux (Luxembourg)
| | - Damien Lenoble
- Nanomaterials Research Unit, SAM Department; Centre de Recherche Public - Gabriel Lippmann; 41, rue du Brill 4422 Belvaux (Luxembourg)
| |
Collapse
|