reconstructed AgZn nanoparticles supported on zinc nanoplates for efficient CO electroreduction to tunable syngas.

Developing efficient electrocatalysts for CO reduction to syngas with tunable H/CO ratios and high total faradaic efficiency is challenging. Herein, we report an effective catalyst composed of reconstructed AgZn nanoparticles and Zn nanoplates for syngas synthesis, showing nearly 100% Faraday efficiency to syngas with a tunable H/CO ratio from 2 : 1 to 1 : 2. Moreover, the electrochemical measurements coupled with theoretical calculations disclose that the Zn site in AgZn nanoparticles and the hollow site between Ag and Zn in AgZn are the possible active sites for CO and H generation, respectively.