The O-O Bonding and Hydrogen Storage in the Pyrite-type PtO2

Huawei Chen; Shuxiang Zhou; Dane Morgan; Vitali Prakapenka; Eran Greenberg; Kurt Leinenweber; Sang Heon Shim

doi:10.1021/acs.inorgchem.9b00046

The O-O Bonding and Hydrogen Storage in the Pyrite-type PtO₂

Huawei Chen, Shuxiang Zhou, Dane Morgan, Vitali Prakapenka, Eran Greenberg, Kurt Leinenweber, Sang Heon Shim

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6 Scopus citations

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-PtO₂H_x (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.

Original language	English (US)
Pages (from-to)	8300-8307
Number of pages	8
Journal	Inorganic chemistry
Volume	58
Issue number	13
DOIs	https://doi.org/10.1021/acs.inorgchem.9b00046
State	Published - Jul 1 2019

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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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}",

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T1 - The O-O Bonding and Hydrogen Storage in the Pyrite-type PtO2

AU - Chen, Huawei

AU - Zhou, Shuxiang

AU - Morgan, Dane

AU - Prakapenka, Vitali

AU - Greenberg, Eran

AU - Leinenweber, Kurt

AU - Shim, Sang Heon

PY - 2019/7/1

Y1 - 2019/7/1

N2 - 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.

AB - 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.

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The O-O Bonding and Hydrogen Storage in the Pyrite-type PtO₂

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