Carbon nanostructures in an ammonium medium |
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Authors: | V. N. Fokin Yu. M. Shul’ga E. E. Fokina V. E. Muradyan I. I. Korobov L. N. Blinova B. P. Tarasov |
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Affiliation: | (1) Institute of Problems of Chemical Physics, Russian Academy of Sciences, pr. N.N. Semenova 1, Chernogolovka, Moscow oblast, 142432, Russia |
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Abstract: | The reaction of fullerene C60, single- and multi-walled carbon nanotubes (SWNTs and MWNTs, respectively), as well as a mixture of these carbon nanomaterials with 8–10 wt% of ammonium chloride (reaction promoter) with ammonia as a source of hydrogen and nitrogen, at an initial ammonium pressure of 0.6–0.8 MPa in the temperature range 20–550°C was studied. The reaction at 450°C is accompanied by hydrogenation and nitrogenation of the fullerite matrix, and at 500°C decomposition of the fullerene carcass occurs. Physicochemical properties of the hydride-nitride phases formed by the reaction were studied. Single- and multiwalled nanotubes were shown to be stable in an ammonium medium at 20–450°C, while at 500°C their ends are opened. |
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