Abstract
Au and Pt nanoparticle-loaded anatase TiO2 particles (Au/TiO2 and Pt/TiO2) were separately prepared by the deposition–precipitation method. Also, selective Pt photodeposition on the Au surface of Au/TiO2 yielded Au (core)–Pt (shell) bimetallic NP-loaded TiO2 particles. In Au (core)–Pt (shell)/TiO2, the mean Pt-shell thickness was controlled at an atomic layer level by irradiation time. The thermocatalytic activities of Au/TiO2, Pt/TiO2, and Au (core)–Pt (shell)/TiO2 for the decomposition of H2O2 were evaluated in the dark at 25 °C. Au (core)–Pt (shell)/TiO2 exhibits a much higher activity than that of Au/TiO2 and even Pt/TiO2 in spite of that Pt has the highest activity among the metals. The turnover frequency depends on the mean number of Pt layers, reaching a maximum of 1.1 × 106 around the monolayer. Density functional theory simulations were performed to analyze the potential-energy surfaces in metal-cluster-catalyzed H2O2 decomposition with Au50, Pt50, and Au14 (core)–Pt36 (shell) used as model metal...
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.
