A mechanochemically prepared graphdiyne (CnH2n−2) based Cu3P@GDY p–n heterojunction for efficient photocatalytic hydrogen evolution

Graphdiyne (C n H 2 n −2 , GDY) was prepared by mechanical ball milling method. The built-in electric field between Cu 3 P and GDY provides a fast electron transfer pathway for photogenerated electrons, thus Cu 3 P@GDY showed excellent activity of hydrogen evolution.