Synergistic effect between transition metal single atom and SnS toward deep CO reduction.

The electrochemical reduction of CO is an efficient channel to facilitate energy conversion, but the rapid design and rational screening of high-performance catalysts remain a great challenge. In this work, we investigated the relationships between the configuration, energy, and electronic properties of SnS loaded with transition metal single atom (TM@SnS) and analyzed the mechanism of CO activation and reduction by using density functional theory. The "charge transfer bridge" promoted the adsorption of CO on TM@SnS, thus enhancing the binding of HCOOH∗ to the catalyst for further hydrogenation and reduction to high-value CH.

Hydroxyl-Bonded Ru on Metallic TiN Surface Catalyzing CO Reduction with HO by Infrared Light.

Synchronized conversion of CO and HO into hydrocarbons and oxygen via infrared-ignited photocatalysis remains a challenge. Herein, the hydroxyl-coordinated single-site Ru is anchored precisely on the metallic TiN surface by a NaBH/NaOH reforming method to construct an infrared-responsive HO-Ru/TiN photocatalyst. Aberration-corrected high-angle annular dark-field scanning transmission electron microscopy (ac-HAADF-STEM) and X-ray absorption spectroscopy (XAS) confirm the atomic distribution of the Ru species.

Metal to non-metal sites of metallic sulfides switching products from CO to CH for photocatalytic CO reduction.

The active center for the adsorption and activation of carbon dioxide plays a vital role in the conversion and product selectivity of photocatalytic CO reduction. Here, we find multiple metal sulfides CuInSnS octahedral nanocrystal with exposed (1 1 1) plane for the selectively photocatalytic CO reduction to methane. Still, the product is switched to carbon monoxide on the corresponding individual metal sulfides InS, SnS, and CuS.