Flue gas is exhausted from home furnaces, fireplaces and even industrial plants, and it carries polluting carbon dioxide (CO2) into the atmosphere. To help mitigate these emissions, researchers reporting in ACS Energy Letters have designed a specialized electrode that captures airborne CO2 and directly converts it into a useful chemical material called formic acid. The system performed better than existing electrodes in tests with simulated flue gas and at ambient CO2 concentrations.
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