Abstract
The controlled growth of Ag nanoparticles into graphene–TiO2 mesoporous films has been triggered by hard X-ray exposure provided by a synchrotron storage ring. The kinetic process has been studied by UV–visible spectroscopy as a function of the X-ray dose and compared to the nanoparticle growth induced in a bare mesoporous titania matrix. The graphene layers act as a preferential nucleation sites, allowing a faster nucleation of the nanoparticles. Moreover, the growth of larger nanoparticles is also promoted as a function of the exposure dose. The combined bottom-up and top-down approach to fabricate nanocomposites porous films embedding both graphene and plasmonic nanoparticles is expected to be a fundamental tool for the design of new analytical platforms based on the enhancement of the Raman signals.
Original language | English |
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Article number | 2 |
Pages (from-to) | 295 |
Number of pages | 302 |
Journal | Journal of Sol-Gel Science and Technology |
Volume | 79 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2016 |
Keywords
- graphene
- Mesoporous films
- lithography
- Nanoparticles
ASJC Scopus subject areas
- Materials Science(all)
- Chemistry(all)