Study of the nanoparticle/matrix interactions in Y2O3–SiO2 samples
Literature Information
Two Y2O3–SiO2 nanocomposites with 10 and 30 wt.% yttrium oxide were obtained by a sol–gel method, and characterized by TEM, X-ray diffraction, FTIR, 29Si MAS and CPMAS NMR spectroscopy. It was found that small (2–3 nm) amorphous yttria nanoparticles are homogeneously dispersed in the silica matrix. Their size does not appear to grow with thermal treatment up to 900 °C nor with yttria content. The silica interacts strongly at the interface with yttria nanoparticles through hydrogen bonds, sometime mediated by bridging water molecules, but also via direct Si–O–Y bonds.
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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.











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