Issue 24, 2011
From the journal:

Physical Chemistry Chemical Physics

Surface chemical modifications and surface reactivity of nanodiamonds hydrogenated by CVD plasma†

Jean-Charles Arnault,*a   Tristan Petit,a   Hugues Girard,a   Anthony Chavanne,a   Céline Gesset,a   Mohamed Sennourb  and  Marc Chaigneauc  

* Corresponding authors

a CEA, LIST, Diamond Sensors Laboratory, Gif-sur-Yvette, France
E-mail: jean-charles.arnault@cea.fr
Fax: (33) 1 69 08 78 19
Tel: (33) 1 69 08 71 02

b Mines Paris, Paristech CNRS UMR 7633, BP 87, F-91003 Evry Cedex, France

c LPICM, Ecole Polytechnique, CNRS, 91128 Palaiseau, France

Abstract

The present study focuses on the interaction of hydrogen microwave CVD plasma with nanodiamonds (NDs). Hydrogen treated NDs (H-NDs) were characterized using electron spectroscopies (XPS, AES) without air exposure. A surface temperature higher than 700 °C is needed to remove the oxygen present on raw NDs. The kinetics of oxygen removal were investigated. Moreover, UHV annealings of H-NDs after ageing in ambient air clearly underline that 75% of the oxygen is related to physisorbed species. Finally, H-NDs were efficiently grafted using photochemical reaction with alkenes and a spontaneous coupling of aryldiazonium salts. These results confirm similar electronic surface properties between bulk and nano diamond materials.

Graphical abstract: Surface chemical modifications and surface reactivity of nanodiamonds hydrogenated by CVD plasma

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Article information

DOI
https://doi.org/10.1039/C1CP20109C
Article type
Paper
Submitted
12 Jan 2011
Accepted
25 Mar 2011
First published
28 Apr 2011

Phys. Chem. Chem. Phys., 2011,13, 11481-11487

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Surface chemical modifications and surface reactivity of nanodiamonds hydrogenated by CVD plasma

J. Arnault, T. Petit, H. Girard, A. Chavanne, C. Gesset, M. Sennour and M. Chaigneau, Phys. Chem. Chem. Phys., 2011, 13, 11481 DOI: 10.1039/C1CP20109C

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