High temperature surface chemistry of carbon nanomaterials is important in applications such as soot formation and oxidation, char combustion, and carbon-based structural and thermal barrier materials, but understanding the kinetics is complicated by the fact that these materials tend to be quite heterogeneous. Single nanoparticle mass spectrometry provides an approach measuring kinetics for surface processes such as oxidation, addition reactions, and sublimation. By comparing kinetics from particle to particle, the effects of heterogeneity of the particle distribution can be determined. By titrating the reactive sites, it is possible to associate reaction rates with the distribution of heterogeneous sites present on individual particles, providing insight into structure-reactivity relationships. Results for reaction of relatively simple graphitic carbon nanoparticles will be presented.

Surface chemistry on single hot carbon nanoparticles

255th National Meeting (2018)

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