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Jeong, Hu Young
UNIST Central Research Facilities (UCRF)
Research Interests
  • Soft material characterization such as graphene using a low kV Cs-corrected TEM
  • Insitu-TEM characterization of carbon-based materials using nanofactory STM holder for Li-ion battery application
  • Structural characterization of mesoporous materials using SEM & TEM
  • Interface analysis between various oxides and metals through Cs-corrected (S)TEM
  • Resistive switching mechanism of graphene oxide thin films for RRAM application

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Shape- and Size-Controlled Synthesis in Hard Templates: Sophisticated Chemical Reduction for Mesoporous Monocrystalline Platinum Nanoparticles

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Title
Shape- and Size-Controlled Synthesis in Hard Templates: Sophisticated Chemical Reduction for Mesoporous Monocrystalline Platinum Nanoparticles
Author
Wang, HongjingJeong, Hu YoungImura, MasatakaWang, LiangRadhakrishnan, LoguduraiFujita, NobuhisaCastle, ToenTerasaki, OsamuYamauchi, Yusuke
Keywords
Ascorbic acids; Bicontinuous; Chemical reduction; Crystallinities; Fcc structures; Hard templates; Mesoporous; Mesoporous Silica; Monocrystalline; Platinum nanoparticles; Polyhedral morphologies; Pt nanoparticles; Size controlled synthesis
Issue Date
2011-09
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.133, no.37, pp.14526 - 14529
Abstract
Here we report a novel hard-templating strategy for the synthesis of mesoporous monocrystalline Pt nanopartides (NPs) with uniform shapes and sizes. Mesoporous Pt NPs were successfully prepared through controlled chemical reduction using ascorbic acid by employing 3D bicontinuous mesoporous silica (KIT-6) and 2D mesoporous silica (SBA-15) as a hard template. The particle size could be controlled by changing the reduction time. Interestingly, the Pt replicas prepared from KIT-6 showed polyhedral morphology. The single crystallinity of the Pt fcc structure coherently extended over the whole particle.
URI
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DOI
10.1021/ja2058617
ISSN
0002-7863
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SE_Journal Papers
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