X-ray photoelectron spectroscopy (XPS) is a widely-utilized tool in surface chemical analysis for semi-quantitative elemental and chemical characterization. However, challenges can occur when trying to characterize poorly conducting surfaces and those that react when exposed to X-rays and low energy electrons. While these concerns are evident in materials of all two-dimensional size scales, this talk will focus on studies involving nano-silver and other nanomaterials (time permitting) where X-ray induced chemical transformations, low energy electron induced transformations, aging, peak fitting and/or charging issues have been observed. In the case of silver, we will discuss the impact of charge neutralization on reduction of silver oxide nanomaterials and photolysis of nanoscale silver chloride transformation products.  Lastly, the information that can and cannot be obtained from these materials, the controls necessary to run, and whether the information obtained should be considered semi-quantitative or qualitative will be discussed.<br/>

Challenges in surface chemical analysis in nanomaterial systems

2019 Fall National Meeting

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