Nano‐SH‐MOF@Self‐Assembling Hollow Spherical g‐C3N4 Heterojunction for Visible‐Light Photocatalytic Nitrogen Fixation

Abstract Metal‐organic frameworks (MOFs)@g‐C 3 N 4 heterojunctions are widely investigated as one of the most potential photocatalysts for N 2 fixation owing to the visible absorption and effective photocatalytic properties. It is still a huge challenge to synthesize hollow spherical C 3 N 4 coated with Nano‐MOF layers towards efficient visible photocatalytic activity on N 2 fixation. In this work, the paramagnetic hollow spherical C 3 N 4 (H‐C 3 N 4 ) are coated with free radical MOF with sulfhydryl ligand (Nano‐SH‐MOF)[Zn 2 (DSBDC)] by self‐assemble method. The C8 M2 samples (the mass ratio of H‐C 3 N 4 to Nano‐SH‐MOF is 8 : 2) exhibited an improved photocatalytic activity, which is almost 5.4 times higher than the pure H‐C 3 N 4 . The improved photocatalytic activity is also discussed in this work. It can be imagined that this work may be helpful for the hollow spherical C 3 N 4 based heterojunction and MOF‐based heterojunction photocatalysts with effective photocatalytic nitrogen fixation.