Transformation of diamond nanoparticles into carbon onions under electron irradiation
Literature Information
V. V. Roddatis, V. L. Kuznetsov, Yu. V. Butenko, D. S. Su, R. Schlögl
The irradiation-induced transformation of diamond nanoparticles (DNP) to spherical onions and onion-like carbon was studied in situ by high-resolution transmission electron microscopy (HRTEM) and electron energy loss spectroscopy (EELS). The process was observed in a transmission electron microscope operated at 200 kV without additional specimen heating. Estimated current density was in the range 20–40 A cm−2. The onion-like particles formed from the diamonds were found to be quite stable to further electron irradiation. The changes in chemical bonding were also confirmed by EELS, revealing an increasing role of bonds with sp2 hybridization in the irradiated material. The mechanism of structural transformation is discussed.
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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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