High-selectivity CO 2 -to-methane photoconversion enabled by a donor–acceptor structured polyphosphazene photocatalyst

A solvothermal CNP polymer photocatalyst with a donor–acceptor structure achieves CO 2 -to-CH 4 at 68.9 μmol g −1 h −1 with 94.4% selectivity, far surpassing conventional catalysts due to enhanced carrier separation and optimized *CO protonation.