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

• Published in: ChemCatChem Vol. 15; no. 11
• Main Authors: Ding, Zhu, Wang, Shuo, Yan, Sai, Zeng, Yu‐Jia, Wang, Dan‐Hong
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 09.06.2023
• Subjects: Carbon nitride; Catalytic activity; Free radicals; heterojunction; Heterojunctions; hollow spherical C3N4; Metal-organic frameworks; Nitrogenation; Photocatalysis; Photocatalysts; photocatalytic nitrogen fixation; self-assemble; Self-assembly; sulfhydryl MOF
• ISSN: 1867-3880; 1867-3899
• DOI: 10.1002/cctc.202201605

Metal‐organic frameworks (MOFs)@g‐C3N4 heterojunctions are widely investigated as one of the most potential photocatalysts for N2 fixation owing to the visible absorption and effective photocatalytic properties. It is still a huge challenge to synthesize hollow spherical C3N4 coated with Nano‐MOF layers towards efficient visible photocatalytic activity on N2 fixation. In this work, the paramagnetic hollow spherical C3N4 (H‐C3N4) are coated with free radical MOF with sulfhydryl ligand (Nano‐SH‐MOF)[Zn2(DSBDC)] by self‐assemble method. The C8 M2 samples (the mass ratio of H‐C3N4 to Nano‐SH‐MOF is 8 : 2) exhibited an improved photocatalytic activity, which is almost 5.4 times higher than the pure H‐C3N4. The improved photocatalytic activity is also discussed in this work. It can be imagined that this work may be helpful for the hollow spherical C3N4 based heterojunction and MOF‐based heterojunction photocatalysts with effective photocatalytic nitrogen fixation. Visible‐light photocatalytic nitrogen fixation: Hollow spherical C3N4 modified with a new free radical SH‐MOF [Zn2(DSBDC)] with sulfhydryl ligand are successfully synthesized by self‐assemble method. It was revealed that the H‐C3N4 could improve the utilization of visible light effectively and the composition of SH‐MOF can promote the separation of photogenerated carriers, resulting in an excellent photocatalytic performance.