Synthesized MnO2/Ag/g-C3N4 composite for photoreduction carbon dioxide under visible light

• Published in: Journal of materials science. Materials in electronics 2018-12, Vol.29 (24), p.20984-20990
• Main Authors: Han, T., Xie, C. M., Meng, Y. J., Wei, Y.
• Format: Article
• Language: English
• Subjects: Carbon dioxide; Carbon nitride; Catalytic activity; Characterization and Evaluation of Materials; Chemistry and Materials Science; Light irradiation; Manganese dioxide; Materials Science; Morphology; Nanoparticles; Optical and Electronic Materials; Optical properties; Phase composition; Photocatalysis; Photochemistry; Silver; Synthesis
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-018-0243-2

The MnO 2 /Ag/g-C 3 N 4 composite photocatalysts have been synthesized by a one pot method. The phase composition, morphology, and optical property of the samples were characterized via XRD, TEM, FT-IR, N 2 adsorption–desorption, UV–vis DRS and PL. The photocatalytic performance was evaluated by reduction of carbon dioxide under visible light irradiation. Compared to pure g-C 3 N 4 and Ag/g-C 3 N 4 , MnO 2 /Ag/g-C 3 N 4 displayed enhanced photoreduction yield under visible light irradiation. In addition, 16.5% MnO 2 /Ag/g-C 3 N 4 sample showed the highest photoreduction yield in photocatalytic process. The enhanced photocatalytic activity was ascribed to the photo-production electrons transfer between the MnO 2 and g-C 3 N 4 and the LSPR effect of Ag nanoparticles. It is suggested that MnO 2 /Ag/g-C 3 N 4 composite is a promising catalyst for the practical application of photoreduction.