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Three‐Dimensional Ordered Assembly of Thin‐Shell Au/TiO 2 Hollow Nanospheres for Enhanced Visible‐Light‐Driven Photocatalysis
Author(s) -
Dinh CaoThang,
Yen Hoang,
Kleitz Freddy,
Do TrongOn
Publication year - 2014
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201400966
Subject(s) - photocatalysis , visible spectrum , materials science , nanostructure , light scattering , chemical engineering , absorption (acoustics) , nanotechnology , shell (structure) , nanoparticle , photochemistry , scattering , optoelectronics , optics , catalysis , composite material , chemistry , organic chemistry , physics , engineering
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.