Unlocking Secrets of Controlled Assembly of Bimetallic Nanoparticles on Silica

Unlocking Secrets of Controlled Assembly of Bimetallic Nanoparticles on Silica

Scientific Achievement
Graphic depiction of multistep synthesis of bimetallic nanoparticles including PdPt, PtAu, RuIr, FeIr, NiIr, PdIr, PtIr, CoIr, RuPt. Lower part of image background shows a TEM image of synthesized nanoparticles on a silica support. (hi-res image)

Nanoparticle synthesis by heterometallic complex salts reduction using a sequential adsorption approach allows the controlled production of new types of supported bimetallic nanoparticles.

Significance and Impact

This synthesis breakthrough provides a  versatile platform for the creation of well-defined silica-supported bimetallic nanoparticles useful in catalytic processes.

Research Details

– Use of an aprotic solvent is a key to producing uniform <3nm diameter of nanoparticles

– Optical spectroscopy confirms electrostatic adsorption nature of adsorption mechanism

– Energy-dispersive X-ray spectroscopy confirms the 1:1 bimetallic nature of nanoparticles

 

K. Ding, D. A. Cullen, L. Zhang, Z. Cao, A. Roy, I. N. Ivanov, and D. Cao, "A general synthesis approach for supported bimetallic nanoparticles via surface inorganometallic chemistry," Science 362, 560-564 (2018). DOI: 10.1126/science.aau4414

CNMS Researchers

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