Cell-free methane oxidation without reductant input

ContextCH 4 emissions account for ~30% of global warming [1], and natural sources may increase [2].Technologies for oxidizing atmospheric CH 4 , area CH 4 emissions, and unavoidable point sources could substantially mitigate climate change.While CH 4 above ~44,000 ppm can be flared, lower concentrations require catalyzed oxidation.However, ~75% of CH 4 pollution is atmospheric (2 ppm) or area emissions below 1000 ppm that