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 language | English |
|---|---|
| Pages (from-to) | 368-375 |
| Number of pages | 8 |
| Journal | Journal of Hazardous Materials |
| Volume | 320 |
| DOIs | |
| Publication status | Published - 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