Anchoring ultra-small molybdenum oxide species on covalent triazine frameworks for efficient electrochemical nitrogen fixation.

We report a smart ion-exchange strategy to anchor molybdenum oxide particles on charge-modulated conjugated triazine frameworks (Mo/CTF-I) for electrochemically fixing nitrogen. The strong interaction between MoO x and CTF-I is conducive to the activation of the inert N 2 molecule in the electro-chemical process. As a result, 5% Mo/CTF-I exhibited an excellent faradaic efficiency of 27.3% and an NH 3 yield rate of 7.23 μg h -1 mg cat. -1 at -0.405 V vs. RHE in 0.1 M KOH, surpassing most previous reports.