A. Nathan-Abutu, D. Lardizabal-Gutierrez, A. Reyes-Rojas
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引用次数: 0
Abstract
The synthesis and crystallographic stability of Cs+-doped Na2ZrO3 perovskite were explored to enhance optical properties and CO2 sorption at low temperatures (500 °C). Perovskite nanoparticles (\(\sim\) 20 nm) crystallize in monoclinic C 2/c symmetry and undergo a partial transformation to a new rhombohedral (Hex) \(R\overline{3 }m\) symmetry during synthesis. The newly obtained atomic coordinates are discussed with respect to their Wyckoff site multiplicity. The incorporation of Cs+ significantly improves perovskite stability (from t = 0.807 to t = 0.916). Optical band gap analysis reveals a reduction in photon energy from 3.91 to 3.54 eV, making it a promising photonic material due to its low phonon energy (\(\ge 430 {{\text{cm}}}^{-1}\)). Additionally, Cs concentration induces a porous structure that enhances CO2 capture capacity, as observed in CO2 sorption analysis.
期刊介绍:
The objective of the Journal of Nanoparticle Research is to disseminate knowledge of the physical, chemical and biological phenomena and processes in structures that have at least one lengthscale ranging from molecular to approximately 100 nm (or submicron in some situations), and exhibit improved and novel properties that are a direct result of their small size.
Nanoparticle research is a key component of nanoscience, nanoengineering and nanotechnology.
The focus of the Journal is on the specific concepts, properties, phenomena, and processes related to particles, tubes, layers, macromolecules, clusters and other finite structures of the nanoscale size range. Synthesis, assembly, transport, reactivity, and stability of such structures are considered. Development of in-situ and ex-situ instrumentation for characterization of nanoparticles and their interfaces should be based on new principles for probing properties and phenomena not well understood at the nanometer scale. Modeling and simulation may include atom-based quantum mechanics; molecular dynamics; single-particle, multi-body and continuum based models; fractals; other methods suitable for modeling particle synthesis, assembling and interaction processes. Realization and application of systems, structures and devices with novel functions obtained via precursor nanoparticles is emphasized. Approaches may include gas-, liquid-, solid-, and vacuum-based processes, size reduction, chemical- and bio-self assembly. Contributions include utilization of nanoparticle systems for enhancing a phenomenon or process and particle assembling into hierarchical structures, as well as formulation and the administration of drugs. Synergistic approaches originating from different disciplines and technologies, and interaction between the research providers and users in this field, are encouraged.