Publications by authors named "R Tenne"
Article Synopsis
- 2D materials, such as transition metal-dichalcogenides like MoS, have gained significant attention for their unique layered structures, which lead to distinct physicochemical properties when isolated as single layers compared to their bulk forms.
- The ability to stack and twist these layers creates new phenomena, such as Moiré patterns, while misfit layer compounds (MLCs) introduce unconventional lattice structures that allow for the formation of nanotubes.
- The stability and behavior of these nanostructures, particularly under elevated temperatures, are important aspects that remain underexplored, prompting studies using advanced techniques like electron microscopy and synchrotron-based X-ray methods to understand their decomposition and recrystallization processes.
Inorganic layered compounds (2D-materials), particularly transition metal dichalcogenide (TMDC), are the focus of intensive research in recent years. Shortly after the discovery of carbon nanotubes (CNTs) in 1991, it was hypothesized that nanostructures of 2D-materials can also fold and seam forming, thereby nanotubes (NTs). Indeed, nanotubes (and fullerene-like nanoparticles) of WS and subsequently from MoS were reported shortly after CNT.
View Article and Find Full Text PDFArticle Synopsis
- Understanding the behavior and limits of nanostructures during high-temperature reactions is essential for controlling their shape and properties.
- Lanthanide-based misfit-layered compounds (MLCs) nanotubes have various structures and disorders that can significantly affect their functionalities, but limited knowledge on their thermodynamic and kinetic stability hinders their production and use.
- This study investigates the growth and stability of specific MLC nanotubes through detailed imaging and diffraction techniques, providing valuable insights for further research on their physical and chemical properties, especially concerning their high-temperature stability.
Multiwall WS nanotubes have been synthesized from WO nanowhiskers in substantial amounts for more than a decade. The established growth model is based on the "surface-inward" mechanism, whereby the high-temperature reaction with HS starts on the nanowhisker surface, and the oxide-to-sulfide conversion progresses inward until hollow-core multiwall WS nanotubes are obtained. In the present work, an upgraded SEM μReactor with H and HS sources has been conceived to study the growth mechanism in detail.
View Article and Find Full Text PDFNanocomposite materials, integrating nanoscale additives into a polymer matrix, hold immense promise for their exceptional property amalgamation. This study delves into the fabrication and characterization of polyetherimide (PEI) nanocomposite strings fortified with multiwall WS nanotubes. The manufacturing process capitalizes on the preferential alignment of WS nanotubes along the string axis, corroborated by scanning electron microscopy (SEM).
View Article and Find Full Text PDF