Surface Activation by Single Ru Atoms for Enhanced High-Temperature CO Electrolysis.

Cathodic CO adsorption and activation is essential for high-temperature CO electrolysis in solid oxide electrolysis cells (SOECs). However, the component of oxygen ionic conductor in the cathode displays limited electrocatalytic activity. Herein, stable single Ruthenium (Ru) atoms are anchored on the surface of oxygen ionic conductor (Ce Sm O , SDC) via the strong covalent metal-support interaction, which evidently modifies the electronic structure of SDC surface for favorable oxygen vacancy formation and enhanced CO adsorption and activation, finally evoking the electrocatalytic activity of SDC for high-temperature CO electrolysis.

Oxygen vacancy induced interaction between Pt and TiO to improve the oxygen reduction performance.

In proton exchange membrane fuel cells (PEMFC), a Pt-based catalyst has been plagued by activity and durability, making it difficult to implement in large-scale commercial applications. In this paper, a composite material formed by titanium dioxide and carbon black containing oxygen vacancies (TiO(O)-C) was used as a functional support to successfully load Pt nanoparticles (NP). The introduction of oxygen vacancies induces the formation of a connection between Pt and TiO, which not only strengthens the fixation of Pt by the composite support but also optimizes the local charge density of Pt.

Oxygen Vacancies-Rich S-Cheme BiOBr/CdS Heterojunction with Synergetic Effect for Highly Efficient Light Emitting Diode-Driven Pollutants Degradation.

Recently, the use of semiconductor-based photocatalytic technology as an effective way to mitigate the environmental crisis attracted considerable interest. Here, the S-scheme BiOBr/CdS heterojunction with abundant oxygen vacancies (Vo-BiOBr/CdS) was prepared by the solvothermal method using ethylene glycol as a solvent. The photocatalytic activity of the heterojunction was investigated by degrading rhodamine B (RhB) and methylene blue (MB) under 5 W light-emitting diode (LED) light.