Stable and Super‐Acidic Nafion for Visible Light‐Driven Oxidative Upcycling of Polystyrene

atmosphere. Such approach resulted in an efficient deconstruction of commercial PS waste under visible light (yield of benzoic acid up to 70%), meanwhile, Nafion could be used in five consecutive runs. Furthermore, the mechanism was systematically investigated. Apart from Nafion, generated oxidized polystyrene intermediates were shown to play an important role on the photocatalytic degradation. This work proposes an interesting pathway to upgrade PS plastics through heterogeneous catalysis, although progress still needs to be made in terms of quantum yield.