Photoinduced Electron Storage and Surface Plasmon Modulation in Ag@TiO2 Clusters
Top Cited Papers
- 2 June 2004
- journal article
- research article
- Published by American Chemical Society (ACS) in Langmuir
- Vol. 20 (14) , 5645-5647
- https://doi.org/10.1021/la048874c
Abstract
The reversible charging and discharging effects associated with photoexcitation of a TiO2 shell in a [email protected]2 composite are described. The photoinduced charge separation in the TiO2 shell is followed by electron injection into the silver core. Interestingly, the charging of the silver core is associated with the shift in the surface plasmon band from 460 to 430 nm. The stored electrons are discharged upon exposure of the charged [email protected]2 composite to an electron acceptor. As the electrons from the silver core are discharged, the original surface plasmon absorption of the Ag core is restored.Keywords
This publication has 20 references indexed in Scilit:
- Photophysical, Photochemical and Photocatalytic Aspects of Metal NanoparticlesThe Journal of Physical Chemistry B, 2002
- Fermi Level Equilibration in Quantum Dot−Metal NanojunctionsThe Journal of Physical Chemistry B, 2001
- Multilayer Assemblies of Silica-Encapsulated Gold Nanoparticles on Decomposable Colloid TemplatesAdvanced Materials, 2001
- One-Pot Synthesis of Ag@TiO2 Core−Shell Nanoparticles and Their Layer-by-Layer AssemblyLangmuir, 2000
- Electrochemical Quantized Capacitance Charging of Surface Ensembles of Gold NanoparticlesThe Journal of Physical Chemistry B, 1999
- Adsorption and Encapsulation of Fluorescent Probes in NanoparticlesThe Journal of Physical Chemistry B, 1999
- Controlled Method for Silica Coating of Silver Colloids. Influence of Coating on the Rate of Chemical ReactionsLangmuir, 1998
- Spectroelectrochemistry of Colloidal SilverLangmuir, 1997
- Environmental Applications of Semiconductor PhotocatalysisChemical Reviews, 1995
- Photochemistry on nonreactive and reactive (semiconductor) surfacesChemical Reviews, 1993