Journal
JOURNAL OF NANOPARTICLE RESEARCH
Volume 15, Issue 1, Pages -Publisher
SPRINGER
DOI: 10.1007/s11051-012-1370-y
Keywords
Ag nanoparticles; Ag@SiO2 core-shell nanoparticles; Optical property; Solar selective coatings; Window applications
Categories
Funding
- Research Council of Norway
- several partners through the NTNU and SINTEF Research Centre on Zero Emission Buildings'' (ZEB)
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Silver (Ag) nanoparticles with typical diameter of about 50 nm have been prepared via a polyol process. The as-prepared Ag nanoparticles are well crystallized and exhibit a characteristic surface plasmon resonance (SPR) band centered at similar to 423 nm. The SPR band shows a strong dependence on the sizes of Ag nanoparticles and the types of the dielectric medium. Core-shell-typed Ag@SiO2 nanoparticles have also been prepared by depositing a thin layer (similar to 25 nm) of silica on Ag nanoparticles. The core-shell-typed Ag@SiO2 nanoparticles show similar optical behaviors (absorption, transmission, and reflection) but enhanced stability compared to those of the Ag nanoparticles, indicating that the core-shell-typed Ag@SiO2 nanoparticles may be used as solar selective coating materials for architectural window applications.
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