| Abstract | We report on the successful synthesis of diammonium magnesium dihydrogendiphosphate (V)
dihydrate compound (NH4)2Mg(H2P2O7)2•2H2O using a wet chemical route. Single crystal X-ray
difraction analysis and micro Raman spectroscopy are employed to characterize the compound. We
demonstrate, using a multidisciplinary approach, that this compound is ideal for carbon dioxide (CO2)
capture in addition to other anthropogenic gasses. We show here -from both an experimental as well as
from a density functional theory (DFT) calculations routes-the potential for adopting this compound
into domestic air-conditioning units (ACUs). From these experiments, the resistance to bacterial growth
is also investigated, which is critical for the adoption of this compound in ACUs. Our compound exhibits
a higher methane (CH4) sorptivity as compared to CO2 at 25°C and 45°C under pressures up to 50
bars. Furthermore, DFT electronic structure calculations are used to compute the main structural and
electronic properties of the compound, taking into consideration the characteristics of the identifed
pores as a function of the progressive CO2 vs. CH4 loadings. Finally, the antibacterial assay reveals a
strong antibacterial activity against the tested Gram-positive and Gram-negative bacteria, with a large
zone of inhibition against the tested E. Coli, S. Aureus and K. Pneumonia. |
