Improvement of the Oxidative Stability of Nanodiamonds by Surface Phosphorylation
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- 作者：Charlene Presti ; Johan G. Alauzun ; Danielle Laurencin ; P. Hubert Mutin
- 刊名：Chemistry of Materials
- 出版年：2013
- 出版时间：May 28, 2013
- 年：2013
- 卷：25
- 期：10
- 页码：2051-2055
- 全文大小：255K
- 年卷期：v.25,no.10(May 28, 2013)
- ISSN：1520-5002
文摘
Surface phosphorylation of nanodiamond was performed by reaction with phosphoryl chloride in dichloromethane. Depending on the reaction conditions, P contents of up to 1.66 mmol/g were reached. Phosphorylation dramatically enhanced the thermal stability of nanodiamond under oxidizing conditions, shifting the oxidation temperature by up to 190 掳C and dividing the oxidation rate by a factor of up to 160. The nature of the grafted phosphate species and their evolution during thermal treatment was followed using solid-state NMR.