Core-Sheath Pt-CeO/Mesoporous SiO Electrospun Nanofibers as Catalysts for the Reverse Water Gas Shift Reaction.

One-dimensional (1D) core-sheath nanofibers, platinum (Pt)-loaded ceria (CeO) sheath on mesoporous silica (SiO) core were fabricated, characterized, and used as catalysts for the reverse water gas shift reaction (RWGS). CeO nanofibers (NFs) were first prepared by electrospinning (ES), and then Pt nanoparticles were loaded on the CeO NFs using two different deposition methods: wet impregnation and solvothermal. A mesoporous SiO sheath layer was then deposited by sol-gel process.

Rational design of tandem catalysts using a core-shell structure approach.

A facile and rational approach to synthesize bimetallic heterogeneous tandem catalysts is presented. Using core-shell structures, it is possible to create spatially controlled ensembles of different nanoparticles and investigate coupled chemocatalytic reactions. The CO hydrogenation to methane and light olefins was tested, achieving a tandem process successfully.