Ultrasonic-assisted efficient degradation of tetracycline over ZnO/BiOBr heterojunctions: Synergistic effect and role of oxidative species
Source abstract
Abstract
Abstract This research focused on synthesis of ZnO/BiOBr heterojunctions using a precipitation-hydrothermal method and their ultrasonic-assisted catalytic activity on the degradation of tetracycline. The chemical composition was detected by EDS, mapping, XPS analysis and results proved the presence of Zn, O, Bi and Br. XRD patterns and TEM images showed phase structure of both ZnO and BiOBr in ZnO/BiOBr composites, indicating the successful combination of ZnO and BiOBr. The ZnO/BiOBr heterojunctions with proper loading amount of ZnO exhibited enhanced catalytic activity compared with pure BiOBr. This enhanced ultrasonic-assisted catalytic activity could be assigned to the synergistic effect of the ultrasonic technology and the formation of heterojunction at the interface of ZnO and BiOBr. Ultrasonic irradiation generated the e −/h +charge carriers and kept the catalyst surface clean by successive surface cleaning capability. Heterojunction structure promoted the charge transfer across the interface for separating the e −/h +carriers.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · ZnO doping and properties · Catalytic Processes in Materials Science
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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