Oxygen vacancy-mediated MnO catalyst with high efficiency and stability for toluene oxidation.

Oxygen vacancy engineering in transition metal oxides is an effective strategy for improving catalytic performance. Herein, defect-enriched MnO catalysts were constructed by controlling the calcination temperature. The high content of oxygen vacancies and accompanying Mn ions were generated in MnO catalysts calcined at low temperature, which could greatly improve the low-temperature reducibility and migration of surface oxygen species.

Preparation of novel flower-like BiVO/BiTiO/FeO for simultaneous removal of tetracycline and Cu: Adsorption and photocatalytic mechanisms.

To improve the visible light utilization and adsorption capacity for combined pollutants (Tetracycline and Cu), novel flower-like BiVO/BiTiO/FeO composite has been successfully synthesized for the first time via a simple two-step process, surfactant-free hydrothermal route and solvothermal method. The crystal structures, chemical compositions, morphologies, optical and photocatalytic properties of the as-prepared samples were characterized by the techniques of XRD, XPS, SEM, HRTEM, BET, UV-vis DRS, and Photocurrent tests (PT). The synthetic sample with 4:1:20 (S5) mass ratio of BiVO/BiTiO/FeO possessed the highest adsorption capacity and photocatalytic performance simultaneously in all of the as-prepared composites.