Preparation of palladium nanoparticles on alumina surface by chemical co-precipitation method and catalytic applications

• Published in: Applied surface science 2013-01, Vol.265, p.500-509
• Main Authors: Kumar, Avvaru Praveen, Kumar, B. Prem, Kumar, A.B.V. Kiran, Huy, Bui The, Lee, Yong-Ill
• Format: Article
• Language: English
• Subjects: Aluminum oxide; Catalytic applications; Chemical co-precipitation; Clusters, nanoparticles, and nanocrystalline materials; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Coprecipitation; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Infrared and Raman spectra; Infrared and raman spectra and scattering; Materials science; Nanocrystals; Nanoparticles; Nanoscale materials and structures: fabrication and characterization; Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Other topics in nanoscale materials and structures; Palladium; Palladium nanoparticles; Physics; Raman spectroscopy; Scanning electron microscopy; Structure of solids and liquids; crystallography; Surface morphology; X-ray diffraction
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2012.11.035

[Display omitted] ▸ Facile synthesis of palladium nanoparticles on alumina surface. ▸ The surface morphology and properties of the nanocrystalline powders were characterized. ▸ The catalytic activities of palladium nanoparticles were investigated. The present work reports a chemical co-precipitation process to synthesize palladium (Pd) nanoparticles using alumina as a supporting material. The optimized temperature for the formation of nanocrystalline palladium was found to be 600°C. The X-ray diffraction (XRD) and Raman spectroscopy were used to study the chemical nature of the Pd in alumina matrix. The surface morphology and properties of the nanocrystalline powders were examined using thermogravimetric analysis (TG–DTA), XRD, Raman spectroscopy, transmission electron microscopy (TEM), scanning electron microscopy (SEM) and atomic force microscopy (AFM). The calcinations in different atmospheres including in the inert medium forms the pure nano Pd0 while in the atmospheric air indicates the existence pure Pd0 along with PdO nanoparticles. The catalytic activities of the as-synthesized nanocrystalline Pd nanoparticles in the alumina matrix were investigated in Suzuki coupling, Hiyama cross-coupling, alkene and alkyne hydrogenation, and aerobic oxidation reactions.