@article{486a00651d244719bf96dc8b84d5fa7d,
title = "The O-O Bonding and Hydrogen Storage in the Pyrite-type PtO2 ",
abstract = "We have synthesized pyrite-type PtO2 (py-PtO2) at 50-60 GPa and successfully recovered it at 1 bar. The observed O-O stretching vibration in Raman spectra provides direct evidence for inter-oxygen bonding in the structure. We also identified the O-H vibrations in py-PtO2 synthesized from the lowerature areas, indicating hydrogenation, py-PtO2Hx (x ≤ 1). Diffraction patterns are consistent with a range of degrees of hydrogenation controlled by temperature. We found that py-PtO2 has a high bulk modulus, 314 ± 4 GPa. The chemical behaviors found in py-PtO2 have implications for the hydrogen storage in materials with anion-anion bonding, and the geochemistry of oxygen, hydrogen, and transition metals in the deep planetary interiors.",
author = "Huawei Chen and Shuxiang Zhou and Dane Morgan and Vitali Prakapenka and Eran Greenberg and Kurt Leinenweber and Shim, {Sang Heon}",
note = "Funding Information: We thank three anonymous reviewers for their helpful comments. The work has been supported by the Keck Foundation (PI: P. Buseck), NASA (80NSSC18K0353), and NSF (EAR1338810). The results reported herein benefit from collaborations and/or information exchange within NASA{\textquoteright}s Nexus for Exoplanet System Science (NExSS) research coordination network sponsored by NASA{\textquoteright}s Science Mission Directorate. The synchrotron experiments were conducted at GSECARS, Advanced Photon Source (APS). GSECARS is supported by NSF-Earth Science (EAR-1128799) and DOE-GeoScience (DE-FG02-94ER14466). APS is supported by DOE-BES, under contract DE-AC02-06CH11357. Computations in this work benefit from the use of the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation − United States, grant no. OCI-1053575. The experimental data for this paper are available by contacting hchen156@asu.edu. Publisher Copyright: {\textcopyright} 2019 American Chemical Society.",
year = "2019",
month = jul,
day = "1",
doi = "10.1021/acs.inorgchem.9b00046",
language = "English (US)",
volume = "58",
pages = "8300--8307",
journal = "Inorganic chemistry",
issn = "0020-1669",
publisher = "American Chemical Society",
number = "13",
}