Sub-4 nm PtZn Intermetallic Nanoparticles for Enhanced Mass and Specific Activities in Catalytic Electrooxidation Reaction

Histidine-assisted synthesis of CeO2 nanoparticles for improving the catalytic performance of Pt-based catalysts in methanol electrooxidation

Histidine-assisted CeO₂ Pt catalysts with more oxygen vacancies are synthesized to improve the catalytic performance in methanol electrooxidation.

Tandem Catalysis for CO2 Hydrogenation to C2-C4 Hydrocarbons

Conversion of carbon dioxide to C₂-C₄ hydrocarbons is a major pursuit in clean energy research. Despite tremendous efforts, the lack of well-defined catalysts in which the spatial arrangement of interfaces is precisely controlled hinders the development of more efficient catalysts and in-depth understanding of reaction mechanisms. Herein, we utilized the strategy of tandem catalysis to develop a well-defined nanostructured catalyst CeO₂-Pt@mSiO₂-Co for converting CO₂ to C₂-C₄ hydrocarbons using two metal-oxide interfaces. C₂-C₄ hydrocarbons are found to be produced with high (60%) selectivity, which is speculated to be the result of the two-step tandem process uniquely allowed by this catalyst. Namely, the Pt/CeO₂ interface converts CO₂ and H₂ to CO, and on the neighboring Co/mSiO₂ interface yields C₂-C₄ hydrocarbons through a subsequent Fischer-Tropsch process. In addition, the catalysts show no obvious deactivation over 40 h. The successful production of C₂-C₄ hydrocarbons via a tandem process on a rationally designed, structurally well-defined catalyst demonstrates the power of sophisticated structure control in designing nanostructured catalysts for multiple-step chemical conversions.

Facile synthesis of a molybdenum phosphide (MoP) nanocomposite Pt support for high performance methanol oxidation

Molybdenum phosphide nanocrystals anchored on graphitic carbon are facilely synthesized and MoP highly improves the catalytic activity and stability of Pt in methanol electro-oxidation.