Abstract
Bismuth/bismuth oxybromide (Bi/BiOBr) composites were synthesized by a facile one-step solvothermal method with the help of dimethyl sulfoxide (DMSO). The products were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS), N2 sorption, UV–visible diffuse reflectance spectra (DRS) and photoluminescence spectroscopy (PL). The photocatalytic activity of the products was evaluated by the photocatalytic degradation of methyl orange (MO) under the visible-light irradiation. The results showed that Bi/BiOBr composites with the different Bi contents could be obtained by adjusting the amount of dimethyl sulfoxide (DMSO), all of which exhibited enhanced photocatalytic activity in comparison with pure BiOBr. Among them, Bi/BiOBr composites prepared with 5ml of DMSO presented the highest photocatalytic activity. The enhanced photocatalytic activity could be attributed to an increased amount of photo-induced charge carriers and effective separation of photo-generated electron–hole pairs. The trapping experiments confirmed that the photogenerated holes and O2− radicals were the main active species responsible for the photodegradation of MO.
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.
