Exploring surface photoreaction dynamics using pixel imaging mass spectrometry (PImMS)
| Autor: | Kershis, MD, Wilson, D, White, MG, John, J, Nomerotski, A, Brouard, M, Lee, J, Vallance, C, Turchetta, R |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Pixel
Chemistry Butanone Analytical chemistry General Physics and Astronomy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Mass spectrometry 01 natural sciences Mass spectrometry imaging 0104 chemical sciences Ion chemistry.chemical_compound Fragmentation (mass spectrometry) Ionization Physical and Theoretical Chemistry Time-of-flight mass spectrometry 0210 nano-technology |
| Zdroj: | Journal of Chemical Physics. 139(8) |
| ISSN: | 0021-9606 |
| Popis: | A new technique for studying surface photochemistry has been developed using an ion imaging time-of-flight mass spectrometer in conjunction with a fast camera capable of multimass imaging. This technique, called pixel imaging mass spectrometry (PImMS), has been applied to the study of butanone photooxidation on TiO2(110). In agreement with previous studies of this system, it was observed that the main photooxidation pathway for butanone involves ejection of an ethyl radical into vacuum which, as confirmed by our imaging experiment, undergoes fragmentation after ionization in the mass spectrometer. This proof-of-principle experiment illustrates the usefulness and applicability of PImMS technology to problems of interest within the surface science community. © 2013 AIP Publishing LLC. |
| Databáze: | OpenAIRE |
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