Stability and phase transfer of catalytically active platinum nanoparticle suspensions

Published

May 9, 2015

Author(s)

Indira Sriram, Alexandra Curtin, Ann C. Chiaramonti Debay, Lauren F. Greenlee, Kavita M. Jeerage

Abstract

In this work, we present a robust synthesis protocol for platinum nanoparticles that yields a monomodal dispersion of particles that are approximately 100 nm in diameter. We determine that these particles are actually agglomerates of much smaller particles, creating a "raspberry" morphology.We demonstrate that these agglomerates are stable at room temperature for at least 8 weeks by dynamic light scattering. Furthermore, we demonstrate consistent electrocatalytic activity for methanol oxidation.Finally, we quantitatively explore the relationship between dispersion solvent and particle agglomeration;specifically, particles are found to agglomerate abruptly as solvent polarity decreases.

Citation

Journal of Nanoparticle Research

Volume

17

Pub Type

Journals

Download Paper

https://doi.org/10.1007/s11051-015-3034-1

Keywords

catalysis, nanoparticles, synthesis, stability

Citation

Sriram, I. , Curtin, A. , Chiaramonti, A. , Greenlee, L. and Jeerage, K. (2015), Stability and phase transfer of catalytically active platinum nanoparticle suspensions, Journal of Nanoparticle Research, [online], https://doi.org/10.1007/s11051-015-3034-1 (Accessed April 20, 2024)