Nanodiamond particles (ND) stimulate broad interest due to their tunable surface chemistry and numerous potential applications. The advantage of using ND arises mainly from the versatility of carbon and the high accessible external surface area (~350 m2/g) of 5 nm diameter ND particles. After production and subsequent purification, ND bears a dense surface layer of different oxygen containing functional groups.The aim of this work is to achieve a better control on the density of ND functional groups and the removal of strongly bound oxygen containing functional groups. For this purpose we have developed a stepwise layer-by-layer annealing approach: the surface of ND is 'cleaned' during each desorption step and new oxygen groups are introduced during the oxidation step. The temperature ranges for this process were determined by TGA experiments in different atmospheres. We report on characterization of ND after this treatment by FTIR, Raman, TEM, TGA and DLS.

Controlling nanodiamond surface functionalization by a layer-by-layer approach

244th National Meeting (2012)

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