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Computational exploration of water adsorption and proton conduction in porous materials

Abstract : The objective of this PhD thesis was to gain insight into the proton dynamics and water adsorption mechanisms in novel porous materials that have been identified experimentally as promising candidates for low temperature proton conduction and adsorption-based heat reallocation-related applications. This was achieved by combining advanced computational tools at the electronic (Density Functional Theory) and atomic (force field_based Monte Carlo and Molecular Dynamics) levels to (i) reveal the water-assisted proton migration pathway through the pores of the hybrid metal organic frameworks MIL-163(Zr) and KAUST-7’and the inorganic phosphonate TiIVTiIV(HPO4)4 materials at the origin of their outstanding proton conduction performances and (ii) explain the water adsorption behaviors of a series of metal organic frameworks CUK-1(Me), MOF-801(Zr) and MIL-100(Fe) that can be tuned by changing the nature of the metal center, creating defects and incorporating coordinatively unsaturated sites. Such a fundamental understanding is expected to pave the way towards a more efficient development of materials for the two explored applications.
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Submitted on : Monday, September 16, 2019 - 10:35:10 AM
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  • HAL Id : tel-02288874, version 1



Paulo Graziane Mendonça Mileo. Computational exploration of water adsorption and proton conduction in porous materials. Material chemistry. Université Montpellier, 2018. English. ⟨NNT : 2018MONTS142⟩. ⟨tel-02288874⟩



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