Activation and splitting of carbon dioxide on the surface of an inorganic electride material

Yoshitake Toda, Hiroyuki Hirayama, Navaratnarajah Kuganathan, Antonio Torrisi, Peter V. Sushko, Hideo Hosono

Research output: Contribution to journalArticlepeer-review

114 Citations (Scopus)


Activation of carbon dioxide is the most important step in its conversion into valuable chemicals. Surfaces of stable oxide with a low work function may be promising for this purpose. Here we report that the surfaces of the inorganic electride [Ca24Al28O64]4+(e -)4 activate and split carbon dioxide at room temperature. This behaviour is attributed to a high concentration of localized electrons in the near-surface region and a corrugation of the surface that can trap oxygen atoms and strained carbon monoxide and carbon dioxide molecules. The [Ca 24Al28O64]4+(e-) 4 surface exposed to carbon dioxide is studied using temperature-programmed desorption, and spectroscopic methods. The results of these measurements, corroborated with ab initio simulations, show that both carbon monoxide and carbon dioxide adsorb on the [Ca24Al 28O64]4+(e-)4 surface at RT and above and adopt unusual configurations that result in desorption of molecular carbon monoxide and atomic oxygen upon heating.

Original languageEnglish
Article number2378
JournalNature Communications
Publication statusPublished - 1 Dec 2013
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Chemistry(all)
  • Physics and Astronomy(all)


Dive into the research topics of 'Activation and splitting of carbon dioxide on the surface of an inorganic electride material'. Together they form a unique fingerprint.

Cite this