A symmetric silica encapsulation toward colloidal Janus nanoparticles: a concave nanoreactor for template-synthesis of an electocatalytic hollow Pt nanodendrite
SCIE
SCOPUS
- Title
- A symmetric silica encapsulation toward colloidal Janus nanoparticles: a concave nanoreactor for template-synthesis of an electocatalytic hollow Pt nanodendrite
- Authors
- Jung Hun Koo; Daun Kim; Kim, JG; Hwakyeung Jeong; JongWon Kim; Lee, IS
- Date Issued
- 2016-08
- Publisher
- ROYAL SOC CHEMISTRY
- Abstract
- A novel reverse microemulsion strategy was developed to asymmetrically encapsulate metal-oxide nanoparticles in silica by exploiting the self-catalytic growth of aminosilane-containing silica at a single surface site. This strategy produced various colloidal Janus nanoparticles, including Au/Fe3O4@asy-SiO2, which were converted to an Au-containing silica nanosphere, Au@con-SiO2, by reductive Fe3O4 dissolution. The use of Au@con-SiO2 as a metal-growing nanoreactor allowed the templated synthesis of various noble-metal nanocrystals, including a hollow dendritic Pt nanoshell which exhibits significantly better electrocatalytic activities for the oxygen reduction reaction than commercial Pt/C catalysts.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/37887
- DOI
- 10.1039/C6NR03557D
- ISSN
- 2040-3364
- Article Type
- Article
- Citation
- Nanoscale, vol. 8, no. 30, page. 14593 - 14599, 2016-08
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- There are no files associated with this item.
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