Exploring surface photoreaction dynamics using pixel imaging mass spectrometry (PImMS)
Exploring surface photoreaction dynamics using pixel imaging mass spectrometry (PImMS)
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DOI：
10.1063/1.4818997
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发表时间：
2013-08-28
影响因子：
4.4
通讯作者：
Turchetta, Renato
中科院分区：
文献类型：
--
作者：
Kershis, Matthew D.;Wilson, Daniel P.;Turchetta, Renato
利用离子成像飞行时间质谱仪和具有多质量成像能力的快速照相机，发展了一种研究表面光化学的新技术。这种称为像素成像质谱（PImMS）的技术已应用于TiO 2（110）上丁酮光氧化的研究。与以前的研究一致，该系统中，有人观察到，丁酮的主要光氧化途径涉及喷射到真空中的乙基自由基，正如我们的成像实验所证实的，在质谱仪电离后经历碎片化。这个原理验证实验说明了PImMS技术对表面科学界感兴趣的问题的有用性和适用性。(C)2013 AIP Publishing LLC.
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. (C) 2013 AIP Publishing LLC.