Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

NEXAFS multiple scattering calculations of KO2.

M Pedio1, Z Y Wu, M Benfatto

  • 1ISM-CNR, Trieste, Italy.

Journal of Synchrotron Radiation
|August 22, 2001
PubMed
Summary

This study investigates potassium superoxide (KO2) formation using advanced spectroscopy. Researchers determined its crystal structure and electronic properties, revealing a solid-state effect influencing the superoxide anion.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

[Epidemiology of <i>Clostridioides difficile</i> carriage in maternal and infant populations: underlying determinants, molecular types, and drug resistance].

Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi·2026
Same author

[A case report of small cell lung cancer with acute pancreatitisand and intestinal pseudo-obstruction as initial manifestations].

Zhonghua nei ke za zhi·2026
Same author

[A case of strangulated small bowel obstruction with intestinal ischemia caused by occult peri cecal hernia].

Zhonghua nei ke za zhi·2026
Same author

[<i>In vitro</i> and <i>in vivo</i> experimental study on the anti-caries effect of ellagic acid from Xinjiang pomegranate peel].

Zhonghua kou qiang yi xue za zhi = Zhonghua kouqiang yixue zazhi = Chinese journal of stomatology·2025
Same author

Updated systematic literature review and meta-analysis to inform the Italian Society of Rheumatology Recommendations on the treatment of rheumatoid arthritis-associated interstitial lung disease.

Autoimmunity reviews·2025
Same author

Correlation between maxillary defect and facial asymmetry.

International journal of oral and maxillofacial surgery·2025

Area of Science:

  • Materials Science
  • Surface Science
  • Solid-State Chemistry

Background:

  • Alkali metal oxidation is of significant interest due to catalytic properties and simple electronic structures.
  • Alkali-oxide phase diagrams show diverse ion formations, including O2-, O2(-), and O2(2-) species.
  • Understanding these interactions is crucial for catalysis and materials development.

Purpose of the Study:

  • To characterize the structure and electronic properties of in situ prepared potassium superoxide (KO2).
  • To analyze the O K-edge absorption NEXAFS spectra of KO2.
  • To elucidate the bonding and electronic transitions within the superoxide anion.

Main Methods:

  • In situ preparation of potassium superoxide.
  • High-resolution O K-edge absorption Near-Edge X-ray Absorption Fine Structure (NEXAFS) spectroscopy.

Related Experiment Videos

  • Multiple Scattering (MS) theoretical approach for data analysis.

    • Main Results:

    • The material was identified as potassium superoxide (KO2) with an O-O bond distance of approximately 1.35 Å.
    • A fine structure was observed in the transition involving the pi molecular empty state of the superoxide O2(-) anion.
    • Multiple Scattering calculations confirmed a predominantly ionic bond between potassium and the oxygen anion.

    Conclusions:

    • The observed fine structure is primarily attributed to solid-state effects.
    • The electronic structure and bonding in potassium superoxide are consistent with an ionic model.
    • The study provides detailed geometrical and electronic insights into alkali metal oxides.