Novel g-CN/PrFeO nanocomposites with Z-scheme structure and superior photocatalytic activity toward visible-light-driven removal of tetracycline antibiotics.

In the presented work, heterostructured nanocomposites based on g-CN and PrFeO with different mass content of PrFeO (0-10 wt%) were prepared by ultrasonic processing to study their photocatalytic activity in the process of antibiotic degradation under visible light. The study of phase composition, structural, morphological and textural characteristics carried out by powder X-ray diffraction, scanning electron microscopy and adsorption-structural analysis confirmed the presence of two phases - graphite-like CN and orthorhombic PrFeO with average crystallite sizes of 5 and 21 nm and mesoporous structure with specific surface area of 57.2-68.

Effect of TiO Additives on the Stabilization of -YbFeO and Promotion of Photo-Fenton Activity of -YbFeO/-YbFeO/-TiO Nanocomposites.

Nanostructured hexagonal rare-earth orthoferrites (-RfeO, R = Sc, Y, Tb-Lu) are well known as a highly effective base for visible-light-driven heterojunction photocatalysts. However, their application is limited by metastability, leading to difficulties in synthesis due to the irreversible transformation to a stable orthorhombic structure. In this work, we report on a simple route to the stabilization of -YbFeO nanocrystals by the synthesis of multiphase nanocomposites with titania additives.