Positive zeta potential of nanodiamonds
Positive zeta potential of nanodiamonds
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DOI：
10.1039/c7nr03200e
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发表时间：
2017-09-14
期刊：
影响因子：
6.7
通讯作者：
Williams, Oliver A.
中科院分区：
文献类型：
--
作者：
Gines, Laia;Mandal, Soumen;Williams, Oliver A.
在本文中，正zeta电位的纳米金刚石颗粒表现出的起源解释。纳米结构碳中的正zeta电位可以通过表面处石墨平面的存在来解释，其留下无氧的刘易斯位点并且因此促进酸性官能团的抑制。电子显微镜和拉曼光谱已经被用来表明，只有在表面存在sp（2）碳时，纳米金刚石才表现出正的zeta电位。
In this paper, the origin of positive zeta potential exhibited by nanodiamond particles is explained. Positive zeta potentials in nano-structured carbons can be explained by the presence of graphitic planes at the surface, which leave oxygen-free Lewis sites and so promotes the suppression of acidic functional groups. Electron Microscopy and Raman Spectroscopy have been used to show that positive zeta potential of nanodiamond is only exhibited in the presence of sp(2) carbon at the surface.