Study of interaction of ethylene glycol/PVP phase on noble metal powders prepared by polyol process

Bulletin of materials science

F Bonet²  K Tekaia-Elhsissen²  K Vijaya Sarathy¹ 

[1] Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bangalore 560 064, India$$Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bangalore 560 064, IndiaChemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bangalore 560 064, India$$;Université de Picardie Jules Verne, Laboratoire de Réactivité et de Chimie des Solides, UPRES-A 6007, 80039 Amiens, France$$Université de Picardie Jules Verne, Laboratoire de Réactivité et de Chimie des Solides, UPRES-A 6007, 80039 Amiens, FranceUniversité de Picardie Jules Verne, Laboratoire de Réactivité et de Chimie des Solides, UPRES-A 6007, 80039 Amiens, France$$

关键词: Metal nanoparticles;    infrared spectroscopy.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Noble metal powders (Au, Ag, Pt, Pd and Ru) have been synthesized by the polyol process in both the nanometer and submicron scales (sans Pd, Pt and Ru). They have been characterized by both microscopic (TEM and SEM) as well as spectroscopic techniques (FT-IR and XPS). Infrared spectroscopy was employed to study the colloid particles in the presence of ethylene glycol and PVP and the results show that the interaction between the organic phase and the metal particles vary according to the particle size. The role of the solvent, ethylene glycol, during the reduction process was also investigated and we observe formation of >C=O vibration band after the reduction process implying that the solvent reduces the metal ions thereby getting oxidized. XPS measurements carried out on the colloidal sols have shown the presence of the organic phase adsorbed onto the metal particles.

【 授权许可】

Unknown