Novel urchin-like Pd nanostructures prepared by a simple replacement reaction and their catalytic properties

• Published in: Applied surface science 2011-07, Vol.257 (18), p.8028-8032
• Main Authors: Cheng, Zhipeng, Xu, Jiming, Zhong, Hui, Chu, XiaoZhong, Song, Juan
• Format: Article
• Language: English
• Subjects: Aluminum; Ammonium perchlorate; Catalysis; Catalysts; Catalytic property; Clusters, nanoparticles, and nanocrystalline materials; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Electron and ion emission by liquids and solids; impact phenomena; Exact sciences and technology; Materials science; Nanorods; Nanoscale materials and structures: fabrication and characterization; Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals; Nanostructure; Other topics in nanoscale materials and structures; Oxidizers; Palladium; Pd nanostructure; Photoemission and photoelectron spectra; Physics; Solid propellants; Specific surface; Structure of solids and liquids; crystallography; Urchin-like
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2011.04.085

[Display omitted] ► Novel urchin-like Pd nanostructures were firstly synthesized using a simple replacement reaction. ► Numerous one-dimensional Pd nanorods radiate from the center of the aluminum templates. ► The urchin-like Pd nanostructures can accelerate the thermal decomposition of ammonium perchlorate. Novel urchin-like Pd nanostructures were firstly synthesized using a simple replacement reaction between Al and PdCl2 aqueous solution at room temperature without the assistance of any surfactant or ligand. Their phase structure, morphology, specific surface area, and catalytic property were characterized by XRD, TEM, EDS, BET and DSC/TG. The results show numerous one-dimensional Pd nanorods radiate from the center of the aluminum templates to form an urchin-like shape with a diameter of ∼0.5–1.0μm. The as-prepared urchin-like Pd nanostructures can serve as a promising additive to accelerate the thermal decomposition of ammonium perchlorate (AP), a key oxidizer in composite solid propellants.