Template Removal via Boudouard Equilibrium Allows for Synthesis of Mesostructured Molybdenum Compounds

Abstract

Oxidative thermal removal of the polymeric templates is not trivial for molybdenum oxides and hampers mesostructuring of this material. At ambient oxygen fugacity Mo(VI) is the thermodynamically stable oxidation state and sublimation of MoO 3 leads to a quick loss of the mesostructure due to Oswald ripening.

Designing transition metal-based porous architectures for supercapacitor electrodes: a review

“…Oswald ripening refers to the partial dissolution of less stable internal structures in a solvent and their redeposition on the crystal surface, resulting in the formation of a variety of porous structures on the micrometre and nanometre scales. 55 In the case of sub-stabilized-directed approved to secondary growth, it is the growth of crystals in the initially formed sub-stabilized state under thermodynamic conditions, which will further interact with the remaining reactants in the solvent, resulting in crystal growth. Zheng et al 54 prepared an MnOOH precursor through Ostwald ripening, and then induced the escape of lattice oxygen by heat treatment, ultimately resulting in the formation of oxygen-defect-rich β-MnO 2 nanorods.…”