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Type |
Poster Presentation |
Area |
Material Chemistry |
Room No. |
Event Hall |
Time |
4월 20일 (금요일) 11:00~12:30 |
Code |
MAT.P-546 |
Subject |
Synthesis of core-shell nanoparticle clusters with synergistic effect between plasmonic and catalytic functions |
Authors |
Seunghoon Lee, Sang Woo Han* Department of Chemistry, Korea Advanced Institute of Science and Technology, Korea |
Abstract |
Designing controlled hybrid nanoarchitectures between plasmonic and catalytic materials is of paramount importance to fully exploit each function of constituent materials. Here we report a new synthetic strategy for the realization of colloidal clusters of core-shell nanoparticles with plasmonic cores and catalytically active shells. The Au@M (M = Pd or Pt) nanoparticle clusters (NPCs) with a high density of sub-1 nm interparticle gaps were successfully prepared by the deposition of M shells onto thermally activated Au NPCs. NPCs with other metal, metal sulfide, and metal oxide shells could also be synthesized by using the present approach. The prepared Au@M NPCs showed remarkably enhanced plasmonic performance compared to their Au@M nanoparticle counterparts due to the localization of a strong electromagnetic field at the interparticle gaps, while the inherent catalytic function of shells was intact. In situ real-time Raman spectroscopy and plasmon-enhanced electrocatalysis experiments demonstrated that the controlled assembly of core-shell nanoparticles is a very effective route for the synergistic integration of plasmonic and catalytic functions in a single platform.
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E-mail |
soenghoon@kaist.ac.kr |
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