Abstract
In this work, the ordered mesoporous CeO2 (m-CeO2) was successfully fabricated via the nanocasting pathway, through using SBA-15 as a hard template. Besides, g-C3N4/Ag/m-CeO2 composite was successfully constructed by calcination method. Meanwhile, the obtained samples were investigated by series of test techniques. The XRD, SEM and TEM results show that the m-CeO2 and Ag/m-CeO2 with the ordered mesoporous trait. Besides, the EPR, Raman and XPS results suggest that the oxygen vacancies (Ov) and Ce3+ and Ce4+ are in g-C3N4/Ag/m-CeO2. In addition, the ordered mesostructure is favorable for the CO2 molecular movement and adsorption/desorption reaction. The g-C3N4 nanosheets, a promising material possessing suitable conductor band, large specific area, non-toxicity, and outstanding chemical stability, is a candidate semiconductor for CO2 conversion. The introduction of g-C3N4 nanosheets to Ag/m-CeO2 overcomes the photocorrosion of Ag nanoparticles and Ag facilitate the transfer of photogenerated electrons. The photocatalytic activity results show that when the loading of Ag is 7 wt%, the g-C3N4/7Ag/m-CeO2 composite exhibits the superiority activity for CO2 photoconversion to CO (13.94 μmol/g) and CH4 (7.39 μmol/g) under UV-irradiation in 10 h.
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.
