Preparation of platinum nanoparticles in liquids by laser ablation method

The Binh Nguyen, Thanh Dinh Nguyen, Quang Dong Nguyen and Thi Trinh Nguyen

Abstract

Platinum (Pt) nanoparticles were prepared in solutions of ethanol and TSC (trisodium citrate—Na₃C₆H₅O₇.nH₂O) in water by laser ablation method using Nd:YAG laser. The role of laser fluence, laser wavelength and concentration of surfactant liquids in laser ablation process were investigated. The morphology, size distribution and optical properties of the Pt nanoparticles (NPs) were observed by transmission electron microscopy (TEM), UV-vis spectrometer and x-ray diffraction measurements. The average diameter of Pt NPs prepared in ethanol and TSC solutions ranges around 7–9 nm and 10–12 nm, respectively. The results showed advantages of the laser ablation method