Abstract
The construction of p-n heterojunctions has become an effective way to develop high performance photocatalysts to remove pollutants from water. Herein, the BiOI/BiFeWO6 composites abundant in oxygen vacancies (OVs) was rationally designed by combining calcination and solvothermal methods to remove different kinds of pollutants, including rhodamine B (RhB), tetracycline (TC), ciprofloxacin (CIP) and hexavalent chromium (Cr(VI)). The surface properties, structural characterizations and photocatalytic activity of BiOI/BiFeWO6 were investigated. Scanning electron microscope (SEM) and transmission electron microscope (TEM) showed that the morphology of BiOI/BiFeWO6 was BiFeWO6 nanoparticles loaded on BiOI sheet structure. The formation of BiOI/BiFeWO6 heterojunction was demonstrated by the shift of the peaks of Bi and I elements in X-ray photoelectron spectroscopy (XPS). Moreover, the existence of OVs was confirmed by the O 1 s spectrum and electron spin resonance (ESR). By comparison with neat BiOI and BiFeWO6, the BiOI/BiFeWO6 composite showed excellent photocatalytic properties under visible light. The strategy that the p-n heterojunction and OVs work together opens up new avenues to fabricate future high-efficiency photocatalysts.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
