Probing dissolved CO₂(aq) in aqueous solutions for CO₂ electroreduction and storage.

ABSTRACT: CO₂ dissolved in aqueous solutions CO₂(aq) is important to CO₂ capture, storage, photo-/electroreduction in the fight against global warming and to CO₂ analysis in drinks. Here, we developed microscale infrared (IR) spectroscopy for in situ dynamic quantitating CO₂(aq). The quantized CO₂(g) rotational state transitions were observed to quench for CO₂(aq), accompanied by increased H₂O IR absorption. An accurate CO₂ molar extinction coefficient ε was derived for in situ CO₂(aq) quantification up to 58 atm. We directly measured CO₂(aq) concentrations in electrolytes under CO₂(g) bubbling and high-pressure conditions with high spectral and time resolutions. In KHC

SUBMITTER: Li J 

PROVIDER: S-EPMC9106293 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature