1. Template Removal via Boudouard Equilibrium Allows for Synthesis of Mesostructured Molybdenum Compounds
- Author
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Carina Bojer, Josef Breu, Julia vom Stein, Thomas Martin, Thomas Lunkenbein, Martin Schieder, Holger Schmalz, and Sebastian G. Koch
- Subjects
Ostwald ripening ,Materials science ,Inorganic chemistry ,Nanowire ,chemistry.chemical_element ,General Medicine ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Catalysis ,0104 chemical sciences ,symbols.namesake ,Template ,chemistry ,Molybdenum ,Mineral redox buffer ,Oxidation state ,symbols ,Fugacity ,Sublimation (phase transition) ,0210 nano-technology - Abstract
Oxidative thermal removal of the polymeric templates is not trivial for molybdenum oxides and hampers mesostructuring of this material. At ambient oxygen fugacity, MoVI is the thermodynamically stable oxidation state and sublimation of MoO3 leads to a quick loss of the mesostructure through Oswald ripening. Taking advantage of the Boudouard equilibrium allows to fix the oxygen fugacity at a level where non-volatile MoO2−x is stable while carbonaceous material may be oxidized by CO2. Mesostructured MoO2−x can be chemically converted into MoO3 or MoN under retention of the mesostructure.
- Published
- 2017
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