Enhanced photocatalytic activity of CaMoO4/g-C3N4 composites obtained via sonochemistry synthesis
Abstract: Herein, CaMoO4-based g-C3N4 composites are successfully synthesized by the sonochemistry method. All samples present photocatalytic activity under UV-light irradiation by employing methylene blue (MB). The structural analysis is available through X-ray diffraction (XRD), Raman, and FTIR spectroscopies, which verified a scheelite-type tetragonal structure for CaMoO4 with slight distortion in [MoO4] clusters between samples and confirmation of g-C3N4 presence in the powder. FEG-SEM images reveal a higher formation of interfaces between CaMoO4 and g-C3N4 particles. Photoluminescence spectra are measured to study the photogenerated charge recombination process. Furthermore, the studies show that increased dosage of g-C3N4 onto the composite provides up to 95.1% of MB discoloration in 180 min, while CaMoO4 without g-C3N4 only provides 40.2%.
Author(s): Santiago, A.A.G.; Macedo, E.M.; Oliveira, F.K.F.; Tranquilin, R.L.; Teodoro, M.D.; Longo, E.; Motta, F.V.; Bomio, M.R.D.
Materials Research Bulletin
Published: February 2022, Volume 146, 111621
DOI: https://doi.org/10.1016/j.materresbull.2021.111621
CDMF
The CDMF, hosted at the Federal University of São Carlos (UFSCar), is one of the Research, Innovation and Dissemination Centers (RIDC) supported by the São Paulo State Research Support Foundation (Fapesp), and also receives investment from the National Council Scientific and Technological Development (CNPq), from the National Institute of Science and Technology of Materials in Nanotechnology (INCTMN).
