Methane conversion by photocatalysis (IMAGE) Tsinghua University Press Caption Photocatalysis uses sunlight or artificial light sources as the only energy input to selectively oxidize methane to C2+ hydrocarbons or oxygenates using low-cost, environmentally friendly oxidants, such as water and oxygen at low temperatures. Credit Carbon Future, Tsinghua University Press Usage Restrictions News organizations may use or redistribute this image, with proper attribution, as part of news coverage of this paper only. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.