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Journal of Sol-Gel Science and Technology
Published in: Journal of Sol-Gel Science and Technology 2/2016

01-08-2016 | Original Paper: Functional coatings, thin films and membranes (including deposition techniques)

In situ growth of Ag nanoparticles in graphene–TiO2 mesoporous films induced by hard X-ray

Authors: Luca Malfatti, Davide Carboni, Alessandra Pinna, Barbara Lasio, Benedetta Marmiroli, Plinio Innocenzi

Published in: Journal of Sol-Gel Science and Technology | Issue 2/2016

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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.

Graphical Abstract

previous article Structure–property tuning in hydrothermally stable sol–gel-processed hybrid organosilica molecular sieving membranes
next article Preparation of Zn–Al layered double hydroxide thin films intercalated with Eosin Y by hot water treatment of sol-gel derived precursor films

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Metadata
Title
In situ growth of Ag nanoparticles in graphene–TiO2 mesoporous films induced by hard X-ray
Authors
Luca Malfatti
Davide Carboni
Alessandra Pinna
Barbara Lasio
Benedetta Marmiroli
Plinio Innocenzi
Publication date
01-08-2016
Publisher
Springer US
Published in
Journal of Sol-Gel Science and Technology / Issue 2/2016
Print ISSN: 0928-0707
Electronic ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-016-4052-x

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Preface

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