Catalytic reduction of low-concentration CO₂ with water by Pt/Co@NC

Qianqian Wang^1,2，Wenzhong Wang²，Ling Zhang²，Yang Su²，Kefu Wang²，Huixia Wu¹

1. The Key Laboratory of Resource Chemistry of Ministry of Education,Shanghai Key Laboratory of the Rare Earth Functional Materials,and Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors,Shanghai Normal University2. State Key Laboratory of High Performance Ceramics and Super fine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences

摘 要：The reduction of low-concentration carbon dioxide with water to organic fuels is still a huge challenge. In this study, we successfully designed the partially oxidized cobalt nanoparticles coated by the nitrogendoped carbon layer（Co@NC） of 2-8 nm via a facile method and then interspersed with different amount of Pt nanoparticles. The Co@NC decorated with 1 wt% Pt exhibits the best ability for CO₂ reduction to CH₄ and a CH₄ production rate of 14.4 μmol·g^-1·h^-1 is achieved. It is worth noting that the system is carried out under low-concentration CO₂（400 ppm） circumstance without any sacrificial agent, which could be meaningful to the design of catalysts for atmospheric CO₂ reduction.

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