Single nanoparticle mass spectrometry is used to measure the mass and emission spectra of individual trapped nanoparticles as they are laser heated, and exposed to reactant gases. The upper temperature limit depends only on the sublimation characteristics of the material, thus extremely high temperatures can be probed for refractory materials. Reaction rates can be measured over 4 to 5 order of magnitude range. By measuring the 500 to 1650 nm emission spectra for each particle under as it reacts, both the particle temperature associated with the kinetics, and information about emissivity can be extracted. Titration is used to count the number of reactive sites present on the surface of each particle, allowing reaction rates to put on a <i>per </i>site basis. High temperature reaction of carbon nanoparticles will be presented.

High temperature surface chemistry and emission spectroscopy of individual nanoparticles

256th National Meeting (2018)

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