Preparation and characterization of positively charged ruthenium nanoparticles

Jun Yang; Jim Yang Lee; T C Deivaraj; Heng-Phon Too

doi:10.1016/j.jcis.2003.10.041

Preparation and characterization of positively charged ruthenium nanoparticles

J Colloid Interface Sci. 2004 Mar 15;271(2):308-12. doi: 10.1016/j.jcis.2003.10.041.

Authors

Jun Yang¹, Jim Yang Lee, T C Deivaraj, Heng-Phon Too

Affiliation

¹ Department of Chemical and Environmental Engineering, National University of Singapore, 10 Kent Ridge Crescent, 119260 Singapore. cheleejy@nus.edu.sg

PMID: 14972606
DOI: 10.1016/j.jcis.2003.10.041

Abstract

Positively charged ruthenium nanoparticles were prepared by NaBH(4) reduction at room temperature and at pH values lower than 4.9. The ruthenium nanoparticles were characterized by zeta potential measurement, TEM, XPS, and XRD. Particles with a mean diameter of 1.8 nm and a standard deviation of 0.40 nm could be obtained under the experimental conditions. The surface charge on the particles is believed to originate from hydrated proton adsorption. The positively charged ruthenium nanoparticles could be used as the starting material for further functionalization by PVP, ethylenediamine, and dodecylamine.