Ag-enhanced CeF-O: highly enhanced photocatalytic performance under NIR light irradiation.

CeF-O with intermediate band showed improved synergic photodegradation activity toward HCl-TC and RhB under NIR light irradiation when enhanced by Ag as a cocatalyst. Ag ions take electrons from the second transition in CeF-O's intermediate band, which are then reduced to Ag as cocatalyst. The photodegradation efficiencies of HCl-TC by various Ag/CeF-O nanoparticles in 180-min increase from 26.

Hyper oxygen incorporation in CeF: a new intermediate-band photocatalyst for antibiotic degradation under visible/NIR light.

Intermediate-band semiconductors perform functions similar to natural photosynthesis by combining two photons to achieve a higher electron excitation. In this study, a strategy was developed to prepare a high oxygen-doped CeF (CeF-O) nanomaterial that exhibits photocatalytic activity under visible/NIR light for the first time. The homogeneous doping oxygen atoms were verified to efficiently modify the band structure of CeF.

Nano Anatase TiO Quasi-Core-Shell Homophase Junction Induced by a Ti Concentration Difference for Highly Efficient Hydrogen Evolution.

The fabrication of heterojunctions or homojunctions between semiconductors is a controllable strategy to facilitate charge separation in photocatalysis. The homophase junctions exhibit atomic-level contact for the fast-speed charge transfer via inducing the built-in electric fields. Herein, a new concept of TiO quasi-core-shell homophase junction induced by a Ti concentration difference for remarkably enhancing photocatalytic activity is proposed.