Zhu Y.W.1,2, Shen X.Q.2,3, Wang B.C.2, Xu X.Y.2, Feng Z.J.1
1Department of Precision Instruments & Mechanology, Tsinghua University, Beijing, China
2China R&D Center, Changsha Research Institute of Mining and Metallurgy, Hunan, China
3China Department of Materials Science and Technology, Jiangsu University, Jiangsu, China
Email: y.w.zhu@63.net
Выставление онлайн: 19 марта 2004 г.
The effect of Chemical Mechanical Modification (CMM) on the zeta-potential and size distribution of nanodiamonds was studied. Results show significant change in the functional groups on its surface after the CMM treatment by the anionic surface modifier DN-10. The amount of hydroxyl groups decreases and two peaks connected with the stretching vibration of carboxylate appear instead of those of carbonyl. The zeta-potential goes up significantly and the size drops to some extent. If treated further with CMM1, a new absorption peak 1382.19 cm-1 connected with the vibration of some distinctive functional groups which cause the increase in the zeta-potential and the decrease in size appears.
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