CO₂ Mineralization by MgO Nanocubes in Nanometric Water Films.

ABSTRACT: Water films formed by the adhesion and condensation of air moisture on minerals can trigger the formation of secondary minerals of great importance to nature and technology. Magnesium carbonate growth on Mg-bearing minerals is not only of great interest for CO₂ capture under enhanced weathering scenarios but is also a prime system for advancing key ideas on mineral formation under nanoconfinement. To help advance ideas on water film-mediated CO₂ capture, we tracked the growth of amorphous magnesium carbonate (AMC) on MgO nanocubes exposed to moist CO₂ gas. AMC was identified by its characteristic vibrational spectral signature and by its lack of long-range structure by X-ray diffraction. We find that AMC (MgCO₃·2.3-2.5H₂O) grew in sub-

SUBMITTER: Luong NT 

PROVIDER: S-EPMC10540135 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature