Issue 6, 2016

Levelling the playing field: screening for synergistic effects in coalesced bimetallic nanoparticles

Abstract

Depending on the synthetic methods, bimetallic nanoparticles can have either core–shell, phase segregated, alloy, or partially coalesced structures, presenting different degrees of atomic mixing on their surface. Along with the variations of size and morphology, the structural differences make it difficult to compare the catalytic activity of bimetallic nanoparticles. In this article, we developed a facile screening method that can focus on the synergistic effects rather than structural differences. Prefabricated nanoparticles are mixed together to form linear aggregates and coalesced to form bimetallic junctions. Their hollow silica shells allow materials transport but prevent further aggregation. With a level playing field, this screening platform can identify the best bimetallic combination for a catalytic reaction, before optimizing the synthesis. This approach is more advantageous than the conventional approaches where structural difference may have dominant effects on the catalytic performance.

Graphical abstract: Levelling the playing field: screening for synergistic effects in coalesced bimetallic nanoparticles

Supplementary files

Article information

Article type
Paper
Submitted
05 Nov 2015
Accepted
09 Jan 2016
First published
11 Jan 2016

Nanoscale, 2016,8, 3447-3453

Author version available

Levelling the playing field: screening for synergistic effects in coalesced bimetallic nanoparticles

R. L. S. Tan, X. Song, B. Chen, W. H. Chong, Y. Fang, H. Zhang, J. Wei and H. Chen, Nanoscale, 2016, 8, 3447 DOI: 10.1039/C5NR07763J

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