Abstract
In this study, a novel heterojunction composite comprising oxyfluoride/bismuth oxyiodide/graphitic carbon nitride (BiOxFy/BiOpIq/g-C3N4) was prepared hydrothermally. Ternary bismuth oxyhalide photocatalyst samples were prepared using various material ratios, pH values, and hydrothermal synthesis temperatures; subsequently, the catalyst with the most favorable photocatalytic degradation rate was selected for further compounding. In this study, quaternary composite photocatalysts were produced through with different weights of g-C3N4 to identify the material with the optimal photocatalytic degradation rate. In a photocatalytic degradation rate experiment, crystal violet dye was used as to represent the pollution source. Among the ternary bismuth oxyhalide catalyst samples, those with the highest (0.2133 h−1) and second highest (0.2074 h−1) degradation rates were selected for the preparation of quaternary photocatalysts. The ternary bismuth oxyhalide with the second-best degradation rate not only successfully formed g-C3N4 quaternary composites but surpassed the degradation rate of the compound with the initially highest rate. Its degradation rate reached 0.2563 h−1, 1.24 times that before recombination, indicating the positive effect of recombination between BiOxFy/BiOpIq and g-C3N4. At 1 atm and 25 °C, the rates of photocatalytic CO2–CH4 conversion by the optimal BiOxFy/BiOpIq and BiOxFy/BiOpIq/g-C3N4 photocatalysts were 0.032 and 0.107 μmol g−1 h−1, respectively. The present results indicate the viability of the synthesizing BiOxFy/BiOpIq/g-C3N4; moreover, because of its photocatalytic activity in the presence of crystal violet and ability to reduce CO2, this material has potential for use in environmental pollution mitigation.
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.