A visible light driven 3D hierarchical CoTiO₃/BiOBr direct Z-scheme heterostructure with enhanced photocatalytic degradation performance

Abstract

The CoTiO3/BiOBr (CTBB) composite displays excellent photocatalytic activity because of the unique nanostructure induced efficient charge separation and transportation in interface of CoTiO3 and BiOBr.

Photocatalysis Meets Piezoelectricity in a Type-I Oxygen Vacancy-Rich BaTiO3/BiOBr Heterojunction: Mechanism Insights from Characterizations to DFT Calculations

“…In addition, the n value is 1 for a direct transition semiconductor and 4 for an indirect transition semiconductor. In this work, BTO and BiOBr are direct ( n = 1) and indirect ( n = 4) transition semiconductors, respectively. , As shown in Figure a, based on the Tauc plots, the band gaps of BiOBr and BTO are determined as 2.71 and 3.43, respectively. Moreover, the Mott–Schottky curves were measured to determine the CB and VB potentials of BiOBr and BTO .…”

In situ construction of a 2D CoTiO3/g-C3N4 photocatalyst with an S-scheme heterojunction and its excellent performance for CO2 reduction

“…As a typical chalcogenide-oxide, CoTiO 3 has been widely used in composite photocatalytic systems owing to its suitable electronic energy band structure, narrow band gap (≈2.36 eV) and good chemical stability. 39,40 However, the photocatalytic performance of pure CoTiO 3 is not desirable. In order to boost the photocatalytic performance of CoTiO 3 , it is usually loaded on TiO 2 , 41 MoS 2 , 42 and other materials to construct effective heterojunctions for improving the separation of photogenerated carriers.…”