Efficient photocatalytic H2 evolution: Controlled dewetting-dealloying to fabricate site-selective high-activity nanoporous Au particles on highly ordered TiO2 nanotube arrays

N.T. Nguyen, M. Altomare, J. Yoo, P. Schmuki*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

140 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)3208-3215
JournalAdvanced materials
Volume27
Issue number20
DOIs
Publication statusPublished - 2015
Externally publishedYes

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