Work

Two-Dimensional Silver Bismuth Oxide/Bismuth Molybdate Z-Scheme Heterojunctions with Rich Oxygen Vacancies for Improved Pollutant Degradation and Bacterial Inactivation

Year: 2025

Type: article

Abstract: The effective removal of organic pollutants and bacteria are of great significance considering the hazards to the environment and human health. The two-dimensional AgBiO3/Bi2MoO6 heterojunction with rich oxygen vacancies was successfully fabricated via a hydrothermal method and systematically characterized by various analytical techniques. The photocatalytic experimental results revealed that the addition of AgBiO3 improved the photocatalytic performance of Bi2MoO6, and the AgBiO3/Bi2MoO6-10 heterojunction possessed the best degradation effect toward RhB (72%) within 100 min, with 1.38 and 1.44 times higher activity than pure Bi2MoO6 and AgBiO3, respectively. The bacteria were completely inactivated within 90 min by AgBiO3/Bi2MoO6-10 heterojunction. The reason for the enhancement of photocatalytic activity was the synergistic effect between AgBiO3 and Bi2MoO6. The constructed Z-scheme heterojunction with oxygen vacancies improved the separation efficiency of photo-induced electrons and holes and broadened the range of visible-light absorption. The trapping experiments and ESR indicated that superoxide radical and holes were the main reactive species.

Source: Crystals

DOI: 10.3390/cryst15040318