Abstract
This study investigates the photocatalytic activity of a novel Mn-doped Bi4O5Br2 material prepared via a facile synthesis process. The experimental and theoretical results confirm that Mn doping enhances the efficiency of NO removal over a Bi4O5Br2 catalyst under visible light irradiation. The SEM (scanning electron microscopy), BET (Brunauer-Emmet-Teller), XRD (X-ray diffraction) analyses show that neither the surface morphology nor the phase of the photocatalytic material changes after the incorporation of Mn. The ESR (electron spin resonance) and UPS (Ultraviolet photoelectron spectroscopy) results show that the electrons in the CBM (conduction band minimum) can be directly captured by O2 to produce large amounts of •O2 radicals, and •OH radicals are formed via the route of •O2−→H2O2→•OH. The higher efficiency of Mn-doped Bi4O5Br2 is driven by the reduced band gap, widened visible light absorption range, higher intensity of visible light absorption, and enhanced separation efficiency of electrons and holes in this material compared with those of pristine Bi4O5Br2.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.