Publications

@article{Sun2023b,
title = {Shedding Light on the Moisture Stability of Halide Perovskite Thin Films},
author = {Kun Sun and Peter Müller-Buschbaum and},
doi = {10.1002/ente.202201475},
year = {2023},
date = {2023-02-08},
journal = {Energy Technology},
keywords = {halide, perovskite, thin films},
pubstate = {published},
tppubtype = {article}
}

@article{Yin2020,
title = {Key Factor Study for Amphiphilic Block Copolymer-Templated Mesoporous SnO2 Thin Film Synthesis: Influence of Solvent and Catalyst},
author = {Shanshan Yin and Ting Tian and Kerstin S Wienhold and Christian L Weindl and Renjun Guo and Matthias Schwartzkopf and Stephan V Roth and Peter Müller-Buschbaum},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/admi.202001002},
doi = {https://doi.org/10.1002/admi.202001002},
year = {2020},
date = {2020-01-01},
journal = {Advanced Materials Interfaces},
volume = {7},
number = {18},
pages = {2001002},
abstract = {Abstract As a crucial material in the field of energy storage, SnO2 thin films are widely applied in daily life and have been in the focus of scientific research. Compared to the planar counterpart, mesoporous SnO2 thin films with high specific surface area possess more attractive physical and chemical properties. In the present work, a novel amphiphilic block copolymer-assisted sol–gel chemistry is utilized for the synthesis of porous tin oxide (SnO2). Two key factors for the sol–gel stock solution preparation, the solvent category and the catalyst content, are systematically varied to tune the thin film morphologies. A calcination process is performed to remove the polymer template at 500 °C in ambient conditions. The surface morphology and the buried inner structure are probed with scanning electron microscope and grazing-incidence small-angle X-ray scattering. Crystallinity is characterized by X-ray diffraction. The multi-dimensional characterization results suggest that cassiterite SnO2 with spherical, cylindrical, and vesicular pore structures are obtained. The variation of the film morphology is governed by the preferential affinity of the utilized solvent mixture and the hydrogen bond interaction between the employed cycloether and H2O molecules in the solution.},
keywords = {mesoporous structures, morphology, PS-b-PEO, SnO2, thin films},
pubstate = {published},
tppubtype = {article}
}

@article{Maehringerb,
title = {Energy Efficient Ultrahigh Flux Separation of Oily Pollutants from Water with Superhydrophilic Nanoscale Metal–Organic Framework Architectures},
author = {Andre Mähringer and Matthias Hennemann and Timothy Clark and Thomas Bein and Dana D Medina},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.202012428},
doi = {https://doi.org/10.1002/anie.202012428},
journal = {Angewandte Chemie International Edition},
volume = {n/a},
number = {n/a},
abstract = {Abstract The rising demand for clean water for a growing and increasingly urban global population is one of the most urgent issues of our time. Here, we introduce the synthesis of a unique nanoscale architecture of pillar-like Co-CAT-1 metal–organic framework (MOF) crystallites on gold-coated woven stainless steel meshes with large, 50 μm apertures. These nanostructured mesh surfaces feature superhydrophilic and underwater superoleophobic wetting properties, allowing for gravity-driven, highly efficient oil–water separation featuring water fluxes of up to nearly one million L m−2 h−1. Water physisorption experiments reveal the hydrophilic nature of Co-CAT-1 with a total water vapor uptake at room temperature of 470 cm3 g−1. Semiempirical molecular orbital calculations shed light on water affinity of the inner and outer pore surfaces. The MOF-based membranes enable high separation efficiencies for a number of liquids tested, including the notorious water pollutant, crude oil, affording chemical oxygen demand (COD) concentrations below 25 mg L−1 of the effluent. Our results demonstrate the great impact of suitable nanoscale surface architectures as a means of encoding on-surface extreme wetting properties, yielding energy-efficient water-selective large-aperture membranes.},
keywords = {nanostructures, surface chemistry, thin films, vapor-assisted conversion},
pubstate = {published},
tppubtype = {article}
}