Characterization of Bimetallic Fe-Ru Oxide Nanoparticles Prepared by Liquid-Phase Plasma Method.

Sung-Jin Lee,Hyunwoong Park,Young-Kwon Park,Ki-Joon Jeon,Heon Lee,Sang-Chul Jung

doi:10.1186/s11671-016-1557-8

Abstract

The bimetallic Fe-Ru oxide nanoparticles were synthesized in the liquid-phase plasma (LPP) method which employed iron chloride and ruthenium chloride as precursors. The active species (OH·, Hα, Hβ, and OI) and the iron and ruthenium ions were observed in the plasma field created by the LPP process. The spherical-shaped bimetallic Fe-Ru oxide nanoparticles were synthesized by the LPP reaction, and the size of the particles was growing along with the progression of the LPP reaction. The synthesized bimetallic Fe-Ru oxide nanoparticles were comprised of Fe2O3, Fe3O4, RuO, and RuO2. Ruthenium had a higher reduction potential than iron and resulted in higher ruthenium composition in the synthesized bimetallic nanoparticles. The control of the molar ratio of the precursors in the reactant solution was found to be employed as a means to control the composition of the elements in bimetallic nanoparticles.

Highlights

Bimetallic catalysts have been studied by many researchers, and as a result of such studies, they have been applied to many industrial catalytic processes [1, 2]
In this study, the bimetallic Fe-Ru oxide nanoparticles were synthesized through the liquid-phase plasma (LPP) process
The iron chloride and ruthenium chloride were employed as precursors to produce the reactant aqueous solution of which pH became lower along with the progression of LPP reaction

Summary

Introduction

Bimetallic catalysts have been studied by many researchers, and as a result of such studies, they have been applied to many industrial catalytic processes [1, 2]. Among diverse bimetallic catalysts developed so far, the Fe-Ru catalysts are the representative alloy system successfully used in the Fischer-Tropsch synthesis [5]. The Fe-Pt catalysts have been known since their methanol activity and selectivity would be changed by the varied proportion in the alloy phase [6]. The increase of Fe content in zeolite-supported Pd catalysts has been known that it could increase the rate of methanol formation [7]. In this way, the bimetallic catalysts of diverse characteristics can be produced by varying the composition of the second metal component

Methods

Results

Conclusion