Related Experiment Video
Updated: Jan 21, 2026

Reverse Microemulsion-mediated Synthesis of Monometallic and Bimetallic Early Transition Metal Carbide and Nitride Nanoparticles
Published on: November 27, 2015
Size-Dependent Structural Transitions Dictate Synergy and Function in Ni-Ru Bimetallic Catalysts
Shiyu Zhang1,2, Yi Gao1,2, Shaojun Xu3,4
1Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO2 Utilization and Reduction Technology, Department of Energy and Power Engineering, Tsinghua University, Beijing, 100084, P.R. China.
None:
Precise control over synergistic interactions is essential for the rational design of bimetallic catalysts, yet the governing role of metal particle size remains elusive. Here, we uncover a general size-dependent principle that dictates structural and functional transitions in Ni-Ru/CeO2 catalysts during the co-conversion of biomass and CO2. Atomically dispersed Ni and Ru sites on CeO2 exhibit pronounced synergistic effects that markedly enhance CO2 reforming of biomass, arising from the presence of independent metallic sites. In contrast, Ni nanoparticles with interspersed Ru form Ni-Ru alloys that confer exceptional stability with only moderate activity loss. This size-dependent structural transition induces a functional switch governing reaction pathway, coke deposition from encapsulated carbon to carbon nanotubes, and the trade-off between catalytic activity and durability. These findings elucidate the mechanistic basis of size-dependent interactions in Ni-Ru bimetallic systems and guide the rational design of stable, high-performance catalysts.
More Related Videos
Related Concept Videos
Structural Protein Function
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to...
Size and Structure of Viral Genomes
Phase Transitions
Viral Structure
Fruit Development, Structure, and Function
Properties of Transition Metals

