Surface Structure of Aerobically Oxidized Diamond Nanocrystals
Name
jp506992c.pdf
Description
Published version
Size
4.6 MB
Format
Adobe PDF
Checksum (MD5)
70338f3d6dc44e180f54d5ebe60d4077
Author(s)
Wolcott, Abraham
Schiros, Theanne
Trusheim, Matthew E
Chen, Edward H
Nordlund, Dennis
Diaz, Rosa E
Gaathon, Ophir
Englund, Dirk
Owen, Jonathan S
Date Issued
2014
Journal
Journal of Physical Chemistry C
Publisher
American Chemical Society (ACS)
Citation
Wolcott, A., et al. "Surface Structure of Aerobically Oxidized Diamond Nanocrystals." J Phys Chem C Nanomater Interfaces 118 46 (2014): 26695-702.
Version
Final published version
Abstract
© 2014 American Chemical Society. We investigate the aerobic oxidation of high-pressure, high-temperature nanodiamonds (5-50 nm dimensions) using a combination of carbon and oxygen K-edge X-ray absorption, wavelength-dependent X-ray photoelectron, and vibrational spectroscopies. Oxidation at 575°C for 2 h eliminates graphitic carbon contamination (>98%) and produces nanocrystals with hydroxyl functionalized surfaces as well as a minor component (<5%) of carboxylic anhydrides. The low graphitic carbon content and the high crystallinity of HPHT are evident from Raman spectra acquired using visible wavelength excitation (λexcit = 633 nm) as well as carbon K-edge X-ray absorption spectra where the signature of a core-hole exciton is observed. Both spectroscopic features are similar to those of chemical vapor deposited (CVD) diamond but differ significantly from the spectra of detonation nanodiamond. The importance of these findings to the functionalization of nanodiamond surfaces for biological labeling applications is discussed. (Figure Presented).
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1021/JP506992C
