Related Experiment Video
Updated: Feb 3, 2026

Versatile Technique to Produce a Hierarchical Design in Nanoporous Gold
Published on: February 10, 2023
Assembling Highly Coordinated Pt Sites on Nanoporous Gold for Efficient Oxygen Electroreduction
Qiwen Zhang1, Jia He1, Ruijie Guo1
1Tianjin Key Laboratory of Advanced Functional Porous Materials, Institute for New Energy Materials & Low-Carbon Technologies , Tianjin University of Technology , Tianjin 300384 , P. R. China.
Abstract:
Pt with high coordination number (HCN) located in the defect surface sites is favorable for high oxygen reduction reaction activity. However, it is still a challenge to design and fabricate such a structure with a high density of Pt HCN sites at minimum Pt usage. Here, using nanoporous Au (NPG) that intrinsically possesses a higher proportion of HCN Au atoms over traditional nanoparticles, we epitaxially deposit Pt monolayer onto NPG to inherit the high-density HCN Pt sites. Among the NPG-Pt catalysts, the one with a smaller ligament size possesses a higher proportion of HCN Pt atoms, thus exhibiting a 5.2-fold specific activity and 18.7-fold mass activity enhancement than the commercial Pt/C catalyst. Moreover, depositing Au atoms on the NPG-Pt surface can further increase the HCN Pt surface exposure, which leads to a 6.9-fold specific activity and 19.1-fold mass activity increase as compared to Pt/C.
Related Concept Videos
Conserved Binding Sites
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
Lattice Centering and Coordination Number
Types of Unit Cells
Imagine taking a large number of identical...
Coordination Number and Geometry
Coordination Compounds and Nomenclature
Ligand Binding Sites
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
Protein Complex Assembly
Many viruses self-assemble into a fully functional unit using the infected host cell to...

