348 citations · 992 across the 8 of their papers we have counts for
8 papers
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…
Noble metal free photocatalytic H generation on black TiO: On the influence of crystal facets vs. crystal damage
Ning Liu, Hans-Georg Steinrueck, Andres Osvet +2
In this study, we investigate noble metal free photocatalytic water splitting on natural anatase single crystal facets and on wafer slices of the [001] plane before and after these…
Intrinsically Activated SrTiO3: Photocatalytic H2 Evolution from Neutral Aqueous Methanol Solution in the Absence of Any Noble Metal Cocatalyst
Xuemei Zhou, Ning Liu, Tadahiro Yokosawa +5
Noble metal cocatalysts are conventionally a crucial factor in oxide-semiconductor-based photocatalytic hydrogen generation. In the present work, we show that optimized high-temper…
Spin-split bands cause the indirect band gap of (CHNH)PbI: Experimental evidence from circular photogalvanic effect
Daniel Niesner, Martin Hauck, Shreetu Shrestha +7
Long carrier lifetimes and diffusion lengths form the basis for the successful application of the organic-inorganic perovskite (CHNH)PbI in solar cells and lasers. The…
Temperature-dependent optical spectra of single-crystal (CHNH)PbBr cleaved in ultrahigh vacuum
Daniel Niesner, Oskar Schuster, Max Wilhelm +6
We measure temperature-dependent one-photon and two-photon induced photoluminescence from (CH3NH3)PbBr3 single crystals cleaved in ultrahigh vacuum. An approach is presented to ext…
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…
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…
Giant Rashba Splitting in CH3NH3PbBr3 Organic-Inorganic Perovskite
Daniel Niesner, Max Wilhelm, Ievgen Levchuk +5
As they combine decent mobilities with extremely long carrier lifetimes, organic-inorganic perovskites have opened a whole new field in opto\-electronics. Measurements of their und…