Reactions, Год журнала: 2025, Номер 6(2), С. 29 - 29

Опубликована: Апрель 23, 2025

The development of efficient and stable photocatalysts is critical for addressing water pollution challenges caused by persistent organic contaminants. However, single-component often suffer from rapid photogenerated carrier recombination limited visible-light absorption. In this study, a two-dimensional lamellar stacked Bi2O3/CeO2 type-II heterojunction photocatalyst (BC) was successfully synthesized in situ topological transformation strategy induced high-temperature oxidation monolithic Bi. Transmission electron microscopy (TEM) scanning (SEM) analyses confirmed the uniform distribution Bi2O3 nanosheets on CeO2 surfaces, forming an intimate interfacial contact that enhances charge separation transfer efficiency. Photoluminescence (PL) spectroscopy, UV–visible diffuse reflectance spectroscopy (DRS), electrochemical characterization revealed extended absorption (up to 550 nm) accelerated migration heterojunction. Under simulated sunlight, optimized BOC (3:1) composite exhibited ciprofloxacin (CIP) degradation rate constant 2.30 5.63 times higher than pure CeO2, respectively. Theoretical calculations validated band alignment with conduction valence offsets 0.07 eV 0.17 eV, which facilitated spatial carriers. This work provides rational designing advancing their application purification.

Язык: Английский