Abstract
Water pollution caused by organic pollutants seriously affects the ecosystem and human health, and photocatalytic oxidation is considered as a promising method for organic pollutant degradation. In this work, different amount of BrO3- is introduced into Cr2Bi3O11 (Br-Cr2Bi3O11), which was confirmed by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). UV diffuse reflectance spectroscopy (DRS) demonstrates that Br-Cr2Bi3O11 has a narrower band gap. In-situ X-ray photoelectron spectroscopy demonstrates that BrO3- can act as an electron bridge to capture electrons under light, and the captured electrons reacted with dissolved oxygen to form ·O2−, which improved the oxidation activity of the catalyst. In addition, the separation of photogenerated carriers of the catalyst is investigated using photoelectron tests. Based on radical capture experiments and electron spin resonance (ESR), it is demonstrated that the main active species was ·O2−. The experimental results show that BrO3- electron bridge can promote the separation of photogenerated carriers and improve the activity of the catalyst. According to all the experimental and characterization results, a mechanism for the separation and transfer of photogenerated charges is proposed.
Sign-in/Register to access full text options 
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.
