Noble metals on anodic TiO2 nanotubes mouths: Thermal dewetting of minimal Pt co-catalyst loading leads to significantly enhanced photocatalytic H2 generation

Abstract

The least is the best. We introduce a technique to strongly reduce Pt use for photocatalytic hydrogen generation from TiO2 nanotubes. By site-selectively depositing thin layers of Pt only at the mouth of the nanotubes and by a subsequent thermal dewetting step, we achieve an outstanding photocatalytic improvement with minimal amounts of co-catalyst.

References in corpus (6)

• One-dimensional Titanium Dioxide Nanomaterials: Nanotubes
• Efficient Photocatalytic H2 Evolution: Controlled Dewetting-Dealloying to Fabricate Site-Selective High-activity Nanoporous Au Particles on Highly Ordered TiO2 Nanotube Arrays
• Hydrogenated anatase: Strong photocatalytic H2 evolution without the use of a co-catalyst
• Suspended Pt nanoparticles over TiO2 nanotubes for enhanced photocatalytic H2 evolution
• Topographical study of TiO2 nanostructure surface for photocatalytic hydrogen production
• H2 Mapping on Pt-loaded TiO2 Nanotube Gradient Arrays

Cited by in corpus (9)

• Photocatalysis with TiO2 Nanotubes: Colorful Reactivity and Designing Site-Specific Photocatalytic Centers into TiO2 Nanotubes
• Templated Dewetting-Alloying of NiCu Bilayers on TiO${}_2$ Nanotubes Enables Efficient Noble Metal-Free Photocatalytic $H_2$ Evolution
• Spaced TiO${}_2$ Nanotube Arrays Allow for High Performance Hierarchical Supercapacitor Structure
• Photocatalytic H2 generation using dewetted Pt-decorated TiO2 nanotubes - Optimized dewetting and oxide crystallization by a multiple annealing process
• Nanoporous AuPt and AuPtAg alloy co-catalysts formed by dewetting-dealloying on ordered TiO2 nanotube surface lead to significantly enhanced photocatalytic H2 generation
• Aminated TiO2 nanotube as a Photoelectrochemical Water Splitting photoanode
• Dewetted Au nanoparticles on TiO${}_2$ surfaces -- Evidence of a size-independent plasmonic photo-electrochemical response
• Double-Side Cocatalytic Activation of Anodic TiO${}_2$ Nanotube Membranes with Sputter-Coated Pt for Photocatalytic H${}_2$ Generation from Water-Ethanol Mixtures
• Compositional gradients in sputtered Ti-Au alloys: Site-selective Au-decoration of anodic TiO${}_2$ nanotubes towards enhanced photocatalytic H${}_2$ evolution