Abstract
The “FeMo cofactors” in biological nitrogenase play a decisive role in nitrogen reduction. Herein, a novel bionic Fe/Mo bimetallene was applied in photocatalytic nitrogen reduction. The surface coating Fe/Mo bimetallene of Bi2Mo0.3W0.7O6 (BMWO) nanocrystals could effectively promote the separation and transportation of photogenerated carriers by multi–electron redox reactions and deliver 2.8 times longer photo–carrier lifetime. Consequently, the nitrogen fixation activity of Fe/Mo bimetallene–coated BMWO nanocrystal photocatalyst was obviously enhanced (218.93 μmol g–1h−1), which was about 4.8 times that of unmodified BMWO nanocrystals. This work provides a novel approach to design bionic Fe/Mo bimetallene–modified inorganic semiconductor photocatalysts for nitrogen reduction.
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