CdSe/TiO2 core-shell nanoparticles produced in AOT reverse micelles : applicati...

• Author(s): Coutinho, Paulo J. G. ; Garcia, Arlindo M. Fontes ; Fernandes, Marisa S. F.
• Date: 2011
• Persistent ID: http://hdl.handle.net/1822/11768
• Origin: RepositóriUM - Universidade do Minho
• Subject(s): CdSe; Quantum dots; Core-shell nanoparticles; Photodegradation methylene blue
• Document Type: Article
• Language: English

Description

Documento submetido para revisão dos pares. A publicar em Nanoscale Research Letters. ISSN 1556-276X. CdSe quantum dots with a prominent band-edge photoluminescence were obtained by a soft w/o AOT microemulsion templating method with an estimated size of 2.7nm. The CdSe particles were covered with a TiO2 layer using a intermediate SiO2 coupling reagent by a sol-gel process. The resulting CdSe/TiO2 core/shell nanoparticles showed appreciable photocatalytic activity at λ=405nm which can only originate from electron injection from the conduction band of CdSe to that of TiO2.