title: Efficient Photocatalytic H2 Evolution: Controlled Dewetting-Dealloying to Fabricate Site-Selective High-Activity Nanoporous Au Particles on Highly Ordered TiO2 Nanotube Arrays.
abstract: Anodic self-organized TiO2 nanostumps are formed and exploited for self-ordering dewetting of Au-Ag sputtered films. This forms ordered particle configurations at the tube top (crown position) or bottom (ground position). By dealloying from a minimal amount of noble metal, porous Au nanoparticles are then formed, which, when in the crown position, allow for a drastically improved photocatalytic H2 production compared with nanoparticles produced by conventional dewetting processes.
authors: Department of Materials Science and Engineering WW4-LKO, University of Erlangen-Nuremberg, Martensstrasse 7, Erlangen, 91058, Germany.
authors: Nhat Truong
authors: NT
authors: Nguyen
authors: Department of Materials Science and Engineering WW4-LKO, University of Erlangen-Nuremberg, Martensstrasse 7, Erlangen, 91058, Germany.
authors: Marco
authors: M
authors: Altomare
authors: Department of Materials Science and Engineering WW4-LKO, University of Erlangen-Nuremberg, Martensstrasse 7, Erlangen, 91058, Germany.
authors: JeongEun
authors: J
authors: Yoo
authors: Department of Materials Science and Engineering WW4-LKO, University of Erlangen-Nuremberg, Martensstrasse 7, Erlangen, 91058, Germany.|Department of Chemistry, King Abdulaziz University, Jeddah, Saudi Arabia.
authors: Patrik
authors: P
authors: Schmuki
keywords: TiO2 nanotubes; anodization; dealloying; dewetting; photocatalysis