2019年2月22日 · Owing to the strong mediating properties of Ce (IV)/Ce (III) with one electron complementary redox coupling reactions, the ceria promotion to Au catalysts gives enhanced activity and stability....

2023年3月23日 · Systematic characterizations revealed that Au/CeO 2-rod had the highest oxygen vacancy density and Ce(III) proportion, favoring the dispersion and stabilization of the metal active sites.

2023年8月1日 · Herein we report a scalable and fast preparation of ultrasmall Au-clusters homogeneously distributed over CeO 2 particles. We demonstrate that Au-clusters/CeO 2 catalysts are more active than conventionally Au/CeO 2 samples fabricated by IWI for CO oxidation and COPrOx reactions.

2020年1月1日 · We investigated performance of commercial CeO 2 (CeO 2-C) and nanorod CeO2 (CeO 2 -R) and the corresponding Au/CeO 2 catalysts in HCHO oxidation. Reactivity tests showed that Au/CeO 2 -R is highly efficient and stable in HCHO oxidation at room temperature, which is attributed to the highly active Au-CeO 2 -R interface.

2022年3月15日 · Rod-like CeO 2 loaded Au nanoparticles are fabricated by a facile hydrothermal method. Au–CeO 2 composites exhibit outstanding catalytic activity for CO at low temperature. Higher catalytic activity is from synergistic interaction of Ce 3+ -Au x+ …

In this study, using an Au/CeO 2-nanorod model catalyst, we demonstrate an edge effect on the Au/CeO 2 interfacial structure, which shows a prominent effect on the structure–performance relationship in the CO oxidation reaction.

2024年9月25日 · In this study, a type of L/D-Au@CeO2 helical nanorods (HNRs) was fabricated by selectively growing CeO2 on the surface of Au HNRs via a facile wet-chemistry construction method. Chiral Au@CeO2 HNRs, featuring Au and CeO2 with spatially separate structures, exhibited the highest photocatalytic performance for N2 fixation, being 50.80 ± 2.64 ...

2018年10月25日 · We synthesized Au NPs (average d ≈ 3 nm) supported on shape-controlled CeO 2 nanocrystals, Au/CeO 2 cubes, and Au/CeO 2 octahedra for experimental analyses. The catalysts were modeled as Au/CeO 2 (100) and Au/CeO 2 (111) via density functional theory (DFT) calculations.

2018年1月8日 · In this work, two unique autoredox routes are developed to the fabrication of CeO 2 -encapsulated Au nanocatalysts. Route A is the synthesis of well-defined CSNs by a one-step redox reaction. The process involves an interesting phenomenon in which Ce 3+ can act as a weak acid to inhibit the hydrolysis of Ce 4+ under the condition of OH − shortage.

In this comprehensive review, the main aspects of using Au/CeO2 catalysts in oxidation reactions are considered. The influence of the preparation methods and synthetic parameters, as well as the characteristics of the ceria support (presence of doping cations, oxygen vacancies concentration, surface area, redox properties, etc.) in the ...