Reduction of Co nanoparticles from hollow-core oxide particles

These experiments show the changes in nanoparticle morphology during oxidation and reduction of Co nanoparticles, which are crucial for making sense of the fundamental relationships involved in catalytic activity.

Left: Movie of the (re)formation of Co nanoparticles from hollow-core oxide particles when heated from 250°C to 350°C in 1 bar of flowing oxygen.

Reference: H.L. Xin, K. Niu, D.H. Alsem and H. Zheng.  “In-Situ TEM Study of Catalytic Nanoparticle Reactions in Atmospheric Pressure Gas Environment,” Microscopy & Microanalysis 19 (2013) pp. 1558. Abstract

Copyright © Microscopy Society of America, 2013