Hierarchical Hollow-TiO@CdS/ZnS Hybrid for Solar-Driven CO-Selective Conversion.

Light-driven valorization conversion of CO is an encouraging carbon-negative pathway that shifts energy-reliance from fossil fuels to renewables. Herein, a hierarchical urchin-like hollow-TiO@CdS/ZnS (HTO@CdS/ZnS) Z-scheme hybrid synthesized by an in situ self-assembly strategy presents superior photocatalytic CO-to-CO activity with nearly 100% selectivity. Specifically, benefitting from the reasonable architectural and interface design, as well as surface modification, this benchmarked visible-light-driven photocatalyst achieves a CO output of 62.

Well-defined CoS cages enable the separation of photoexcited charges to promote visible-light CO reduction.

Exploring affordable cocatalysts with high performance for boosting charge separation and CO activation is an effective strategy to reinforce CO photoreduction efficiency. Herein, well-defined CoS cages are exploited as a nonprecious promoter for visible-light CO reduction. The CoS cages are prepared a multistep strategy with ZIF-67 particles as the precursor and fully characterized by physicochemical techniques.