155 citations · 775 across the 17 of their papers we have counts for
17 papers
Compositional gradients in sputtered Ti-Au alloys: Site-selective Au-decoration of anodic TiO nanotubes towards enhanced photocatalytic H evolution
Seyedsina Hejazi, Marco Altomare, Shiva Mohajernia +1
Au nanoparticles at the TiO surface can enhance the photocatalytic H generation performances owing to their electron transfer co-catalytic ability. Key to maximize the co-c…
Double-Side Cocatalytic Activation of Anodic TiO Nanotube Membranes with Sputter-Coated Pt for Photocatalytic H Generation from Water-Ethanol Mixtures
Gihoon Cha, Marco Altomare, Nhat Truong Nguyen +3
Self-standing TiO nanotube layers in the form of membranes are fabricated by self-organizing anodization of Ti metal and a potential shock technique. The membranes were then de…
Dewetted Au nanoparticles on TiO surfaces -- Evidence of a size-independent plasmonic photo-electrochemical response
Markus Licklederer, Nhat Truong Nguyen, Reza Mohammadi +6
Flat TiO layers are deposited by magnetron sputtering on Ti/Si wafers. The TiO surfaces are then sputter-coated with thin Au films of a nominal thickness of 0.5-10 nm that…
Photocatalytic reduction and scavenging of Hg(II) over templated-dewetted Au on TiO nanotubes
Davide Spanua, Alessandro Bestetti, Helga Hildebrand +3
Gold-decorated TiO nanotubes were used for the photocatalytic abatement of Hg(II) in aqueous solutions. The presence of dewetted Au nanoparticles induces a strong enhancement o…
Templated Dewetting-Alloying of NiCu Bilayers on TiO Nanotubes Enables Efficient Noble Metal-Free Photocatalytic Evolution
Davide Spanu, Sandro Recchia, Shiva Mohajernia +5
Photocatalytic evolution reactions on pristine TiO is characterized by low efficiencies due to trapping and recombination of charge carriers, and due to a sluggish kineti…
Transparent TiO2 Nanotubes Arrays Directly Grown on Quartz Glass Used in Front- and Back-Side Irradiation Configuration for Photocatalytic H2 Generation
JeongEun Yoo, Marco Altomare, Mohamed Mokhtar +4
In the present work we explore the front- and back-side performance of a photocatalytic platform consisting of self-organized TiO2 nanotube layers formed by complete anodization of…
Photocatalytic H2 generation using dewetted Pt-decorated TiO2 nanotubes - Optimized dewetting and oxide crystallization by a multiple annealing process
JeongEun Yoo, Marco Altomare, Mohamed Mokhtar +4
In the present work we use TiO2 nanotube arrays, carrying a Pt coating that is optimally dewetted, as a photocatalyst to generate H2. In order to achieve a maximum H2-generation ef…
Polydopamine-Coated TiO2 Nanotubes for Selective Photocatalytic Oxidation of Benzyl Alcohol to Benzaldehyde under Visible Light
Jyotsna Tripathy, Gabriel Loget, Marco Altomare +1
TiO2 nanotube arrays grown by anodization were coated with thin layers of polydopamine as visible light sensitizer. The PDA-coated TiO2 scaffolds were used as photocatalyst for sel…
High-Temperature Annealing of TiO2 Nanotube Membranes for Efficient Dye-Sensitized Solar Cells
Fatemeh Mohammadpour, Marco Altomare, Seulgi So +5
We fabricate photo-anodes by transferring anodic TiO2 nanotube membranes in tube-top-down configuration on FTO glass, and use them for constructing frontside illuminated dye-sensit…
Molten o-H3PO4 - A New Electrolyte for the Anodic Synthesis of Self-Organized Oxide Structures: WO3 Nanochannel Layers and Others
Marco Altomare, Ole Pfoch, Alexei Tighineanu +4
We introduce the use of pure molten ortho-phosphoric acid (o-H3PO4) as an electrolyte for selforganizing electrochemistry. This electrolyte allows for the formation of self-organiz…
Use of Anodic TiO2 Nanotube Layers as Mesoporous Scaffolds for Fabricating CH3NH3PbI3 Perovskite-based Solid State Solar Cells
Raul Salazar, Marco Altomare, Kiyoung Lee +7
We optimize the deposition of CH3NH3PbI3 perovskite into mesoporous electrodes consisting of anodic TiO2 nanotube layers. By a simple spin coating approach, complete filling of the…
Free standing membranes to study the optical properties of anodic TiO2 nanotube layers
Gihoon Cha, Patrik Schmuki, Marco Altomare
In the present work we investigate various optical properties (such as light absorption and reflectance) of anodic TiO2 nanotubes layers directly transferred as self-standing membr…
A Comparison of Anodic TiO2 Nanotube Membranes used for Front-side Illuminated Dye-Sensitized Solar Cells
Fatemeh Mohammadpour, Mahmood Moradi, Gihoon Cha +4
In the present work we compare TiO2 nanotube lift-off strategies for the construction of front-side illuminated dye-sensitized solar cells (DSSCs). Anodic nanotube layers were deta…
Noble metals on anodic TiO2 nanotubes mouths: Thermal dewetting of minimal Pt co-catalyst loading leads to significantly enhanced photocatalytic H2 generation
Nhat Truong Nguyen, Marco Altomare, JeongEun Yoo +2
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…
Suspended Pt nanoparticles over TiO2 nanotubes for enhanced photocatalytic H2 evolution
Nhat Truong Nguyen, JeongEun Yoo, Marco Altomare +1
In the present work we introduce a technique to form a photocatalyst, based on Pt nanoparticles suspended over the mouth of TiO2 nanotubes. These structures are obtained by the dec…
Enhanced Performance of Dye-Sensitized Solar Cells based on TiO2 Nanotube Membranes using Optimized Annealing Profile
F. Mohammadpour, M. Moradi, K. Lee +6
We use free-standing TiO2 nanotube membranes that are transferred onto FTO slides in front-side illuminated dye-sensitized solar cells (DSSCs). We investigate the key parameters fo…
Efficient Photocatalytic H2 Evolution: Controlled Dewetting-Dealloying to Fabricate Site-Selective High-activity Nanoporous Au Particles on Highly Ordered TiO2 Nanotube Arrays
Nhat Truong Nguyen, Marco Altomare, JeongEun Yoo +1
Overlaid self-ordering processes: we form anodic self-organized TiO2 nanostumps and exploit them for self-ordering dewetting of Au-Ag sputtered films. This forms ordered particle c…