Influence of surface modification adopting thermal treatments on dispersion of detonation nanodiamond

Journal Article · Tue Mar 15 00:00:00 EST 2005 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2004.12.025· OSTI ID:20725824

Xiangyang, Xu ^[1]; Zhiming, Yu ^[2]; Yongwei, Zhu ^[3]; Baichun, Wang ^[3]

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1. School of Material Science and Engineering, Central South University, Changsha 410083 (China) and R and D, Changsha Research Institute of Mining and Metallurgy, Lushannan Road 966, Changsha 410012 (China)
2. School of Material Science and Engineering, Central South University, Changsha 410083 (China)
3. R and D, Changsha Research Institute of Mining and Metallurgy, Lushannan Road 966, Changsha 410012 (China)

In order to improve the dispersion of detonation nanodiamonds (ND) in aqueous and non-aqueous media, a series of thermal treatments have been conducted in air ambient to modify ND surface. Small angle X-ray scattering (SAXS) technique and high resolution transmission electron microscopy (HRTEM) were introduced to observe the primary size of ND. Differential thermal analysis (DTA), X-ray diffraction (XRD) methodology, X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) spectroscopy were adopted to analyze the structure, bonds at surfaces of the treated ND. Malvern instrument Zetasizer3000HS was used for measuring the surface electric potential and the size distribution of ND. As thermal treatments can cause graphitization and oxidization of functional groups at the surface, ND treated at high temperature is correspondingly more negatively charged in an aqueous medium, and the increased absolute value of zeta potential ensures the electrostatic stability of ND particles. Specially, after being treated at a temperature more than 850K, ND can be well dispersed in various media.

• OSTI ID: 20725824
• Journal Information: Journal of Solid State Chemistry, Vol. 178, Issue 3; Other Information: DOI: 10.1016/j.jssc.2004.12.025; PII: S0022-4596(04)00668-1; Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AGGLOMERATION
DIAMONDS
DIFFERENTIAL THERMAL ANALYSIS
DISPERSIONS
DISTRIBUTION
FOURIER TRANSFORMATION
GRAPHITIZATION
HEAT TREATMENTS
INFRARED SPECTRA
NANOSTRUCTURES
SMALL ANGLE SCATTERING
SURFACE POTENTIAL
SURFACES
TEMPERATURE RANGE 0400-1000 K
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY