Visible light assisted production of methanol from CO₂ using CdS@CeO₂ heterojunction

The production of methanol from CO₂ is highly desirable in present scenario due to the excessive CO₂ emission. Several photocatalytic materials have been developed for reduction of CO₂ into methanol under mild conditions, but things need to be developed soon. In the present work, the solvothermal process had synthesized high surface area CeO₂ supported CdS nanocomposite. The catalytic amount of CdS@CeO₂ heterojunction materials was highly active to produce methanol and CO from CO₂. CdS@CeO₂ heterojunction demonstrated a good formation of methanol (1534 μmol-g^-1) and CO (213 μmol-g^-1) under similar conditions. CdS@CeO₂ heterojunction materials were studied using several characteristic techniques, such as XRD, XPS, HR-TEM, UV-vis, FTIR, PL, and Raman spectroscopy, physisorption and EIS analysis. CdS@CeO₂ nanocomposite demonstrated excellent activity and stability with no leaching of metal content at the end of the sixth run.