Direct electrochemical capture and release of carbon dioxide using an industrial organic pigment: quinacridone.

ABSTRACT: Limiting anthropogenic carbon dioxide emissions constitutes a major issue faced by scientists today. Herein we report an efficient way of controlled capture and release of carbon dioxide using nature inspired, cheap, abundant and non-toxic, industrial pigment namely, quinacridone. An electrochemically reduced electrode consisting of a quinacridone thin film (ca. 100?nm thick) on an ITO support forms a quinacridone carbonate salt. The captured CO2 can be released by electrochemical oxidation. The amount of captured CO2 was quantified by FT-IR. The uptake value for electrochemical release process was 4.61?mmol?g(-1). This value is among the highest reported uptake efficiencies for electrochemical CO2 capture. For comparison, the state-of-the-art aqueous amine industrial capture process has an uptake efficiency of ca. 8?mmol?g(-1).

SUBMITTER: Apaydin DH 

PROVIDER: S-EPMC4499243 | biostudies-literature | 2014 Jun

REPOSITORIES: biostudies-literature