A low-cost poly(ethyleneimine)-cobalt (PEI-Co) complex solution with high O2 absorption capacity (as high as 1.5 L O2 (STP)/L solution) was developed and used in a bio-mimetic system to produce high-purity O2 from air. An oxygen concentration greater than 99.6% was demonstrated.

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http://dx.doi.org/10.1039/c8cc01457dDOI Listing

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