Chromate adsorption mechanism on nanodiamond-derived onion-like carbon

Young Jin Ko, Keunsu Choi, Soon-Jae Lee, Jung Min Cho, Heon Jin Choi, Seok Won Hong, Jae Woo Choi, Hiroshi Mizuseki, Wook Seong Lee

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The onion-like carbon (OLC) was prepared as adsorbent and tested for the removal of chromate ions from aqueous solutions. The OLC was thermally derived from nanodiamond by vacuum annealing at 1000–2000 °C. An investigation was conducted the chromate adsorption mechanism of OLC, by analysing the temperature-dependent evolution of the various oxygen-carbon bonds and the chemisorbed water by X-ray photo electron spectroscopy, as well as by the first principle calculation of the bond energies for relevant bond configurations. The present work demonstrated the importance of the carbon-oxygen bond type and carbon dangling bonds for chromate adsorption, as well as for other anionic heavy metals adsorbed from wastewater and sewage.

Original languageEnglish
Pages (from-to)368-375
Number of pages8
JournalJournal of Hazardous Materials
Volume320
DOIs
Publication statusPublished - 2016 Dec 15

Keywords

  • Adsorption
  • Chromate
  • Dangling bond
  • Hydroxyl functional group
  • Onion-like carbon

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

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  • Cite this

    Ko, Y. J., Choi, K., Lee, S-J., Cho, J. M., Choi, H. J., Hong, S. W., Choi, J. W., Mizuseki, H., & Lee, W. S. (2016). Chromate adsorption mechanism on nanodiamond-derived onion-like carbon. Journal of Hazardous Materials, 320, 368-375. https://doi.org/10.1016/j.jhazmat.2016.08.041