The efficient production of H2O2 from only H2O and O2 was realized by a self-assembled porphyrin-based photocatalyst, and the effect of carboxylic groups in the water oxidation to produce H2O2 was revealed.

New technology developed by Professor Zhongwei Chen at the University of Waterloo could make a significant difference in the fight against climate change by affordably converting harmful carbon dioxide into fuels and other valuable chemicals on an industrial scale.