A5081922733- Semiconductor materials and devices
- Ferroelectric and Negative Capacitance Devices
- Catalysis and Oxidation Reactions
- Phase-change materials and chalcogenides
- Advanced Memory and Neural Computing
- Catalytic Processes in Materials Science
- Perovskite Materials and Applications
- X-ray Diffraction in Crystallography
- Gas Sensing Nanomaterials and Sensors
- Gold and Silver Nanoparticles Synthesis and Applications
- Advancements in Solid Oxide Fuel Cells
- Industrial Gas Emission Control
- Crystallization and Solubility Studies
- Advanced Nanomaterials in Catalysis
- Nanocluster Synthesis and Applications
- Magnetic and transport properties of perovskites and related materials
- ZnO doping and properties
- Ferroelectric and Piezoelectric Materials
- Chalcogenide Semiconductor Thin Films
- Electronic and Structural Properties of Oxides
RWTH Aachen University
2021-2024
Forschungszentrum Jülich
2021
The catalytic combustion of methane has gained much attention as a sustainable technology, due to concerns about the environmental impact unburnt emissions from natural gas vehicles. Researchers have explored alternatives precious metal catalysts for combustion, with focus on perovskite oxides known their excellent activity and sintering-resistance capacity. In this study, LaFeO3 material was synthesized subsequently subjected nitric acid etching treatment modify its surface. It found that...
Advancing the synthesis of HfO 2 nanocrystals, a refined anhydrous protocol that enables kinetic trapping metastable tetragonal phase and modulates twinning defects in anisotropically grown monoclinic nanoprisms is presented. This evolved sol–gel approach examines role capping agent tri‐ n ‐octylphosphine oxide (TOPO) introduces novel heating strategy with sequential growth stages. Replacement TOPO triphenylphosphine (TPPO) leads to formation prismatic hafnia nanocrystals exhibiting pristine...
The defect chemistry of perovskite compounds is directly related to the stoichiometry and valence states transition-metal ions. Defect engineering has become increasingly popular as it offers possibility influence catalytic properties perovskites for applications in energy storage conversion devices such solid-oxide fuel- electrolyzer cells. LaFeO$_3$ (LFO) can be regarded a base compound family catalytically active La$_{1-x}$A$_x$Fe$_{1-y}$B$_y$O$_{3-\delta}$, which well electronic ionic...
Aiming to achieve the highest combustion efficiency and less pollutant emission, a catalytic coating for cylinder walls in internal engines was developed tested under several conditions. The consists of La
Resistive switching (RS) for nonvolatile data storage is a highly relevant field of research. Up to now, RS devices are fabricated via semiconductor processing technologies. This poses the question whether integration chemically tailored nanoparticles, either consisting valence change or phase materials, can be integrated in nanoelectrode configurations order explore their functionality applications. review discusses properties such nanoparticles by means selected examples both nanoparticle...
Gold nanostars (AuNSs) have achieved special relevance for potential biomedical applications, e.g., in theranostics. In relation to this, some authors explored controlling the conditions that trigger structural and morphological changes these structures. this work, we studied can of AuNSs or maintain their stability, such as ligand exchange nonthiolated thiolated species. First, synthesis stabilizing AuNS, 4-(2-hydroxyethyl)-1-piperazinapropanesulfonic acid (EPPS), was exchanged species...
The wet-chemical synthesis of 3D confined antimony nanoparticles (Sb-NP) at low and high temperatures is described. Using reaction conditions that are mild in temperature strong reducing power allows the amorphous Sb-NP stabilized with organic ligands. Exchanging ligand 1-octanethiol by iodide enabled to investigate unusual stability this metastable material through simultaneous thermal analysis combining differential scanning calorimetry thermogravimetric analysis. Additionally, situ powder...
The enduring demand for ever-increasing storage capacities inspires the development of new few nanometer-sized, high-performance memory devices. In this work, tri-n-octylphosphine oxide (TOPO)-stabilized sub-10 nm monoclinic HfO2 nanocrystals (NC) with a rod-like and spherical shape are synthesized used to build up microscale nanoscale test electrical characterization these devices studied by cyclic current–voltage measurements reveals redox-like behavior in ambient atmosphere volatile...