Photocatalytic Synthesis of Ammonia from Hollow Coral-Like Graphitic Carbon Nitride/FeOCl Loaded with Fe-1T MoS 2 Nanosheets as Cocatalysts.

Photocatalytic ammonia synthesis (PAS) represents an emerging environmentally friendly approach to ammonia production. In this work, we employed Fe doping to modify the cocatalyst 1T MoS 2 , enhancing the active N 2 sites on Fe-1T MoS 2 by inducing defects on the surface of 1T MoS 2 . Afterward, Fe-1T MoS 2 was loaded onto a hollow coral-like graphitic carbon nitride (CCN)/FeOCl composite. Under simulated sunlight, the efficiency of 5% Fe-1T MoS 2 @CCN/FeOCl (Fe-MCN/FeOCl) reached 367.62 μmol g -1 h -1 , surpassing 1T MoS 2 @CCN(MCN) by 3.2 times, CCN by 16.9 times, and g-C 3 N 4 by 32.5 times, where 5% means the doping amount of Fe in 1T MoS 2 . The good performance of Fe MCN/FeOCl should be attributed to the Fe doping in Fe-MCN/FeOCl which not only increases the separation efficiency of active sites and charge carriers, but also reduces the sample impedance significantly through the heterojunction formed between CCN and FeOCl. This work also presents a method for creating more efficient and stable photocatalysts for ammonia synthesis.