Three-dimensional ordered assembly of thin-shell Au/TiO2 hollow nanospheres for enhanced visible-light-driven photocatalysis

Cao-Thang Dinh; Hoang Yen; Freddy Kleitz; Trong-On Do

doi:10.1002/anie.201400966

Three-dimensional ordered assembly of thin-shell Au/TiO2 hollow nanospheres for enhanced visible-light-driven photocatalysis

Angew Chem Int Ed Engl. 2014 Jun 23;53(26):6618-23. doi: 10.1002/anie.201400966. Epub 2014 Apr 15.

Authors

Cao-Thang Dinh¹, Hoang Yen, Freddy Kleitz, Trong-On Do

Affiliation

¹ Department of Chemical Engineering and Centre de recherche sur les propriétés des interfaces et la catalyse (CERPIC), Université Laval, Quebec, G1V 0A6 (Canada).

PMID: 24737715
DOI: 10.1002/anie.201400966

Abstract

An Au/TiO(2) nanostructure was constructed to obtain a highly efficient visible-light-driven photocatalyst. The design was based on a three-dimensional ordered assembly of thin-shell Au/TiO(2) hollow nanospheres (Au/TiO(2)-3 DHNSs). The designed photocatalysts exhibit not only a very high surface area but also photonic behavior and multiple light scattering, which significantly enhances visible-light absorption. Thus Au/TiO(2)-3 DHNSs exhibit a visible-light-driven photocatalytic activity that is several times higher than conventional Au/TiO(2) nanopowders.

Keywords: gold; nanostructures; ordered assembly; photocatalysis; titanium dioxide.