Publications by authors named "P Rudolf"
We investigated the production of highly reactive oxygen species (ROS) in solutions undergoing treatment using CaviPlasma (CP) technology. This technology combines plasma discharge with hydrodynamic cavitation. This study focused on factors such as pH, conductivity, presence of salts and organic matter affecting ROS formation and their stability in solutions.
View Article and Find Full Text PDFA novel oxygen evolution reaction (OER) electrocatalyst was prepared by a synthesis strategy consisting of the solvothermal growth of NiS nanostructures on Ni foam, followed by hydrothermal incorporation of Fe species (Fe-NiS/Ni foam). This electrocatalyst displayed a low OER overpotential of 230 mV at 100 mA·cm, a low Tafel slope of 43 mV·dec, and constant performance at an industrially relevant current density (500 mA·cm) over 100 h in a 1.0 M KOH electrolyte, despite a minor loss of Fe in the process.
View Article and Find Full Text PDFArticle Synopsis
- - Hydrogen is a strong alternative fuel with benefits like high energy density and low environmental impact, but its storage for cars is challenging.
- - A new method using a layered structure made of reduced graphene oxide and organosilica can host tiny MgH nanoparticles, improving their hydrogen storage capabilities compared to bulk MgH.
- - The study shows that this approach allows hydrogen to be released at lower temperatures and maintains stable performance over multiple cycles, suggesting that this method can enhance both hydrogen release and recharging efficiency.
Article Synopsis
- Group-14 Xenes like silicene, germanene, and stanene are being explored for their unique electronic properties that can be modified through covalent functionalization.
- A new method for creating thin layers of covalently functionalized germanene through a chemical reaction has been introduced, producing sheets only about 6 nm thick, much thinner than previous methods.
- The functionalization process increases the optical bandgap of germanene by 500 meV, indicating potential for advanced applications in electronics and catalysis.
Article Synopsis
- Rare earth bisphthalocyanines (MPc) are studied for their properties as single-molecular magnets, which can be useful in molecular spintronics and quantum computing.
- Current synthesis methods for MPc focus on substituted phthalocyanines and often generate byproducts that affect yields, with two main routes being from phthalonitrile or metalating phthalocyanine precursors.
- This research introduced a new solvothermal synthesis method that successfully produced high yields of unsubstituted bisphthalocyanines for yttrium, lanthanum, gadolinium, and terbium, with thorough characterization confirming the quality of the resulting complexes.