Photocatalytic Reaction of Titanium Oxide (IMAGE) National Institutes of Natural Sciences Caption Abiotic oxygen can be produced from water in the presence of titanium oxide and an electron acceptor under UV light. Our report suggests that this photocatalytic reaction can supply significant amount of abiotic oxygen on habitable extrasolar planets. Credit National Institutes of Natural Sciences (NINS) 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.