Fig.1 Chlorine Dioxide Radical (IMAGE) Osaka University Caption Chlorine dioxide radical (ClO<sub>2</sub><sup>•</sup>) was found to act as an efficient oxidizing agent in the aerobic oxygenation of methane to methanol and formic acid under photoirradiation. The yields of methanol and formic acid were 14% and 85%, respectively, with a methane conversion of 99% under ambient conditions (298 K, 1 atm) in a two-phase system comprising perfluorohexane and water. Credit Osaka University Usage Restrictions None License Licensed 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.