Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-28T17:07:41.607Z Has data issue: false hasContentIssue false
  • English
  • Français

Purification and Functionalization of Diamond Nanopowders

Published online by Cambridge University Press:  31 January 2011

Jong-Kwan Lim  and
Jong-Beom Baek
Jong-Kwan Lim
Affiliation:
[email protected]
Jong-Beom Baek
Affiliation:
[email protected], Ulsan National Institute of Science and Technology, 1School of Energy Engineering, Ulsan metropolitan city, Korea, Republic of
Get access

Abstract

Purification of diamond nanopowder (DNP) was conducted in a less-destructive mild polyphosphoric acid (PPA)/phosphorous pentoxide (P2O5). The wide-angle X-ray diffraction (XRD) showed that the intensity of the characteristic diamond d-spacing (111) at 2.07 Å from purified DNP (PDNP) was fairly increased compared to pristine DNP, indicating that significant amount of carbonaceous impurities were removed. Chemical modification of pristine DNP and PDNP with 4-ethylbenzoic acid was carried out to afford 4-ethylbenzoyl-functionalized DNP (EBA-g-DNP) and PDNP (EBA-g-PDNP). The morphologies of EBA-g-DNP and EBA-g-PDNP from scanning electron microscopy (SEM) were further affirmed the feasibility of chemical modification. The results suggested that the reaction condition was indeed viable for the one-pot purification and functionalization of DNP. The resultant functionalized DNP could be useful for nanoscale additives. Hence, EBA-g-DNP and EBA-g-PDNP was brominated by using N-bromosuccinimide (NBS). The resultant N-brominated DNP and PDNP could be used as initiator for the atom transfer radical polymerization (ATRP) to introduce many polymers onto the surface of functionalized DNP and PDNP.

Keywords

diamondnanostructurepurification
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1203: Symposium J – Diamond Electronics and Bioelectronics-Fundamentals to Applications III , 2009 , 1203-J17-52
Copyright
Copyright © Materials Research Society 2010

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Kroto, H. W..; Heath, J. R..; O'Brien, S. C..; Curl, R. F..; and Smally, R. E.. Nature (London) 318, 162 (1985).Google Scholar
2 Iijima, S.. Nature (London) 354, 56 (1974).Google Scholar
3 Zhang, Faming.; Shen, Jun.; Sun, Jianfei.; Zhu, Yan Qiu.; Wang, Gang.; McCartney, G.. Carbon 43, 1254–1258 (2004).Google Scholar
4 Andrews, R..; Jacques, D..; Qian, D..; Dickey, E.C.. Carbon 39, 1681 (2001).Google Scholar
5 Hou, P.X..; Bai, S..; Yang, Q.H..; Lin, C..; Cheng, H.M.. Carbon 40, 81 (2002).Google Scholar
6 Baek, J.-B.; Lyon, C. B.; Tan, L.-S. J. Mater. Chem. 14, 2052 (2004).Google Scholar
7 Ahn, S.-N.; Lee, H.-J.; Kim, B.-J.; Tan, L.-S.; Baek, J.-B. J. Polym. Sci. Pol. Chem. 46, 7473–7482 (2009).Google Scholar
8(a) J-B, Baek.; -B, Lyon C..; Tan, L.S. Macromolecules 37, 8278–8285 (2006). (b) Oh S.-J.; Lee H.-J.; Keum D.-K., Lee S.-W.; Wang D.-H.; Park S.-Y.; Tan L.S.; Baek J.-B.. Polymer 47, 1132-1140 (2006).Google Scholar