Korean Journal of Chemical Engineering

, Volume 36, Issue 9, pp 1417–1420 | Cite as

Synthesis RhAg bimetallic composite nanoparticles for improved catalysts on direct synthesis of hydrogen peroxide generation

  • Yangpil Jang
  • Hyobin Nam
  • Joseph Song
  • Seungyong LeeEmail author
  • Jae-Pyung AhnEmail author
  • Taekyung YuEmail author
Catalysis, Reaction Engineering


This study reports on the aqueous-phase synthesis of rhodium-silver (RhAg) bimetallic composite nanoparticles with a controllable Rh/Ag ratio. Due to the high cost of Rh compared with Ag, the RhAg nanoparticles were synthesized in two steps: the synthesis of Ag nanoparticles and the formation of a Rh-rich RhAg area on the surface of the Ag nanoparticles. Transmission electron microscopy and corresponding elemental mapping analyses exhibited that the synthesized 20 nm-sized quasi-spherical RhAg nanoparticles were composed of Ag-rich and Rh-rich area, respectively. Considering the amount of Rh used and productivity, the RhAg nanoparticles with a Rh content of 0.8% exhibited the best catalytic performance for the direct H2O2 generation reaction.


RhAg Nanoparticles Bimetallic Aqueous-phase Synthesis Rh-rich Area H2O2 Generation Reaction 


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This research was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (NRF-2014R1A5A1009799 and NRF-2016M3D1A1021140).

Supplementary material

11814_2019_337_MOESM1_ESM.pdf (309 kb)
Synthesis RhAg bimetallic composite nanoparticles for improved catalysts on direct synthesis of hydrogen peroxide generation


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Copyright information

© The Korean Institute of Chemical Engineering (KIChE) 2019

Authors and Affiliations

  1. 1.Department of Chemical Engineering, College of EngineeringKyung Hee UniversityYounginKorea
  2. 2.Materials Architecturing Research CenterKorea Institute of Science and TechnologySeoulKorea
  3. 3.Department of Nanomaterials Science and EngineeringKorea University of Science and TechnologyDaejeonKorea
  4. 4.Department of Material Science & Engineering, College of EngineeringKorea UniversitySeoulKorea
  5. 5.Nano Materials Analysis CenterKorea Institute of Science and TechnologySeoulKorea

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