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Optimized FTO seeding enables the growth of high efficient Ta-doped TiO nanorod photoanodes
Christopher Schneider, Ning Liu, Patrik Schmuki
Tantalum doped rutile nanorods were hydrothermally grown on FTO substrates using a new seeding approach. This approach allows the incorporation of high concentrations of up to 4.8…
Noble-Metal-Free Photocatalytic Hydrogen Evolution Activity: The Impact of Ball Milling Anatase Nanopowders with TiH2
Xuemei Zhou, Ning Liu, Jochen Schmidt +10
In this work, we demonstrate that a well-established and facile ball milling approach using mixtures of commercial anatase nanoparticles and TiH2 introduces noble-metal-free photoc…
Effect of Low Oxygen Annealing on Photoelectrochemical Water Splitting Properties of -FeO
Yoichi Makimizu, Nhat Truong Nguyen, Hyo-Jin Ahn +4
Photoelectrochemical (PEC) water splitting is a promising method for conversing solar energy into chemical energy stored in the form of hydrogen. Nanostructured hematite (-Fe$_2…
Spaced TiO Nanotube Arrays Allow for High Performance Hierarchical Supercapacitor Structure
Nhat Truong Nguyen, Selda Ozkan, Imgon Hwang +2
In this work we describe the synthesis and electrochemical properties of nitridated hierarchical TiO nanotubes as an electrode for supercapacitors. The hierarchical TiO nan…
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…
Black and White Anatase, Rutile and Mixed Forms: Band-Edges and Photocatalytic Activity
Xuemei Zhou, Ewa Wierzbicka, Ning Liu +1
Here we investigate the band-level energetics of "black" hydrogenated titania in different polymorphs using in-situ photoelectrochemical measurements and XPS valence band measureme…
Influence of Ti Defect-type on Heterogeneous Photocatalytic H Evolution Activity of TiO
Shiva Mohajernia, Pavlina Andryskova, Giorgio Zoppellaro +4
Reduced titanium dioxide has recently attracted large attention, particularly for its unique co-catalyst-free H heterogeneous photocatalytic application. The enhanced photocata…
Black Magic in Gray Titania: Noble-Metal-Free Photocatalytic H2 Evolution from Hydrogenated Anatase
Ning Liu, Xuemei Zhou, Nhat Truong Nguyen +5
"Black" TiO2 has gained increasing interest because of its outstanding properties and promising applications in a wide range of fields. Among the outstanding features of the materi…
Black TiO2 nanotubes formed by high energy proton implantation show noble-metal-co-catalyst free photocatalytic H2-evolution
Ning Liu, Volker Häublein, Xuemei Zhou +8
We apply high-energy proton ion-implantation to modify TiO2 nanotubes selectively at their tops. In the proton-implanted region we observe the creation of intrinsic co-catalytic ce…
Visible Light Triggered Drug Release from TiO2 Nanotube Arrays: A Novel Controllable Antibacterial Platform
Jingwen Xu, Xuemei Zhou, Zhida Gao +2
In this work, we use a double-layered stack of TiO2 nanotubes (TiNTs) to construct a visible-light triggered drug delivery system. Key for visible-light drug release is a hydrophob…
Hydrogenated anatase: Strong photocatalytic H2 evolution without the use of a co-catalyst
Ning Liu, Christopher Schneider, Detlef Freitag +8
In the present work we show, how a high pressure hydrogenation of commercial anatase or anatase/rutile powder can create a photocatalyst for hydrogen evolution that is highly effec…
TiO2 nanotubes: N-ion implantation at low-dose provides noble-metal-free photocatalytic H2-evolution activity
Xuemei Zhou, Volker Häublein, Ning Liu +7
Low-dose nitrogen implantation induces in TiO2 nanotubes a co-catalytic activity for photocatalytic H2-evolution. The use of an ion implantation process leads to a N-implanted zone…
Conical-Shaped Titania Nanotubes for Optimized Light Management in DSSCs Reach Back-side Illumination Efficiencies > 8%
Seulgi So, Arian Kriesch, Ulf Peschel +1
In the present work, we introduce the anodic growth of conical shaped TiO2 nanotube arrays. These titania nanocones provide a scaffold for dye-sensitized solar cell (DSSC) structur…
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…