The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Control of sp2/sp3 Carbon Ratio and Surface Chemistry of Nanodiamond Powders by Selective Oxidation in Air
Abstract
The presence of large amounts of nondiamond carbon in detonation-synthesized nanodiamond (ND) severely limits applications of this exciting nanomaterial. We report on a simple and environmentally friendly route involving oxidation in air to selectively remove sp(2)-bonded carbon from ND. Thermogravimetric analysis and in situ Raman spectroscopy shows that sp(2) and sp(3) carbon species oxidize with different rates at 375-450 degrees C and reveals a narrow temperature range of 400-430 degrees C in which the oxidation of sp(2)-bonded carbon occurs with no or minimal loss of diamond. X-ray absorption near-edge structure spectroscopy detects an increase of up to 2 orders of magnitude in the sp(3)/sp(2) ratio after oxidation. The content of up to 96% of sp(3)-bonded carbon in the oxidized samples is comparable to that found in microcrystalline diamond and is unprecedented for ND powders. Transmission electron microscopy and Fourier transform infrared spectroscopy studies show high purity 5-nm ND particles covered by oxygen-containing surface functional groups. The surface functionalization can be controlled by subsequent treatments (e.g., hydrogenization). In contrast to current purification techniques, the air oxidation process does not require the use of toxic or aggressive chemicals, catalysts, or inhibitors and opens avenues for numerous new applications of nanodiamond.
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Citations
Cites
Adsorption of Gases in Multimolecular Layers
Brunauer, S., Emmett, P. H., & Teller, E. (1938) · Journal of the American Chemical Society · doi:10.1021/ja01269a023 · Cited by 28,156
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The properties and applications of nanodiamonds
Mochalin, V. N., Shenderova, O., Ho, D., & Gogotsi, Y. (2012) · Nature Nanotechnology · doi:10.1038/nnano.2011.209 · Cited by 2,745
Self-citationGeorgakilas, V., Perman, J. A., Tucek, J., & Zboril, R. (2015) · Chemical Reviews · doi:10.1021/cr500304f · Cited by 2,147
Activation of Persulfates by Graphitized Nanodiamonds for Removal of Organic Compounds
Lee, H., Kim, H.-I., Weon, S., Choi, W., Hwang, Y. S., Seo, J., Lee, C., & Kim, J.-H. (2016) · Environmental Science & Technology · doi:10.1021/acs.est.6b02079 · Cited by 688
Fluorescent PLLA-nanodiamond composites for bone tissue engineering
Zhang, Q., Mochalin, V. N., Neitzel, I., Knoke, I. Y., Han, J., Klug, C. A., Zhou, J. G., Lelkes, P. I., & Gogotsi, Y. (2011) · Biomaterials · doi:10.1016/j.biomaterials.2010.08.090 · Cited by 399
Self-citationPhonon confinement effects in the Raman spectrum of nanodiamond
Osswald, S., Mochalin, V. N., Havel, M., Yushin, G., & Gogotsi, Y. (2009) · Physical Review B · doi:10.1103/physrevb.80.075419 · Cited by 256
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Metadata
- Authors
- Osswald, S., Yushin, G., Mochalin, V., Kucheyev, S. O., & Gogotsi, Y.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2006-08-16
- Volume
- 128
- Issue
- 35
- Pages
- 11635-11642
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2071301087
- Cited by
- 918
- References
- 1
- FWCI
- 14.76
- Type
- journal article
- Language
- en
- Open access
- closed
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