A mesoporous ZnIn2S4 photocatalyst shows notable activity for photoreforming of PLA, PET and PU to generate small organic chemicals and H2 fuel under simulated sunlight at room temperature.

Sulfonamides exhibit the advantages of wide prevalence, excellent prefunctionalization capability, and broad functional group compatibility. We report here utilizing sulfonyl imines as sulfonyl radical precursors for hydrosulfonylation of activated alkenes via visible-light irradiation. By preinstallation of functional groups into the sulfonamides and subsequent hydrosulfonylation, a variety of complex sulfones were synthesized with good efficiency under Ir/Cu dual photoredox catalysis. Additionally, this protocol expands the research in late-stage N–S bond modification in sulfonamides.