Chemical mechanical modification of nanodiamond in an aqueous system |
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| Authors: | Y. W. Zhu X. Q. Shen B. C. Wang X. Y. Xu Z. J. Feng |
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| Affiliation: | (1) Department of Precision Instruments and Mechanology, Tsinghua University, Beijing, 100084, China;(2) China R&D Center, Changsha Research Institute of Mining and Metallurgy, Hunan, 410012, China;(3) China Department of Materials Science and Technology, Jiangsu University, Jiangsu, 202013, China |
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| Abstract: | The effect of chemical-mechanical modification (CMM) on the ζ potential and size distribution of nanodiamonds was studied. Results show a significant change in the functional groups on its surface after 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 ζ potential goes up significantly, and the size drops to some extent. If treated further with CMM1, a new absorption peak appears at 1382.19 cm?1 that is connected with the vibration of some distinctive functional groups that cause an increase in the ζ potential and a decrease in size. |
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