Chem. Sci., 2026, Accepted Manuscript DOI: 10.1039/D6SC02866G, Edge Article Yasuomi Yamazaki, Qiubo Wang, Yoshiaki Tanabe, Yoshiaki Nishibayashi In recent years, photocatalytic hydrogenation of metal nitrides to ammonia using solar energy as a renewable energy source and green hydrogen as both an electron and a proton source under...