155 citations · 536 across the 10 of their papers we have counts for
10 papers
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…
Forming a highly active, homogeneously alloyed AuPt co-catalyst decoration on O2 nanotubes directly during anodic growth
Haidong Bian, Nhat Truong Nguyen, JeongEun Yoo +10
Au and Pt do not form homogeneous bulk alloys as they are thermodynamically not miscible. However, we show that anodic TiO nanotubes (NTs) can in-situ be uniformly decorated wi…
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…
Open top anodic Ta3N5 nanotubes for higher solar water splitting efficiency
Sabina Grigorescu, Seulgi So, Jeong Eun Yoo +3
In the present work we grow self-organized Ta2O5 nanotube layers in a H2SO4/NH4F electrolyte at various elevated temperatures. Under optimized conditions we obtain 4 μm long nanotu…
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…
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…
Tungsten doping of Ta3N5-Nanotubes for Band Gap Narrowing and Enhanced Photoelectrochemical Water Splitting Efficiency
Sabina Grigorescu, Benedikt Baerhausen, Lei Wang +4
Ordered W-doped Ta2O5 nanotube arrays were grown by self-organizing electrochemical anodization of TaW alloys with different tungsten concentrations and by a suitable high temperat…
Topographical study of TiO2 nanostructure surface for photocatalytic hydrogen production
Gihoon Cha, Kiyoung Lee, JeongEun Yoo +2
In the present work we investigate the photocatalytic hydrogen production (water splitting) activity of different Pt loaded TiO2 nanotube layers. Therefore, we fabricate free stand…