An ibuprofen tablet was characterized by x-ray photoelectron spectroscopy. The sample fixed to a stainless-steel holder with copper double-sided adhesive tape. Survey spectra, C 1s, O N Si 2p, and Na 1s core level spectra were acquired. results showed the presence of carbon oxygen, elements that are part chemical structure ibuprofen; however, these can also be excipients. In addition, nitrogen,...

We investigated the high-density CO adsorption phase formed on a Pt(111) surface when exposed to CO gas of pressure ranging from UHV to 100 mTorr using near-ambient-pressure (NAP)-XPS. Combined results from the NAP-XPS measurements and DFT calculations reveal the adsorption structure of CO molecules in the dense CO overlayer, which is stable under realistic conditions.

We present results from high-resolution electron energy loss spectroscopy (HREELS) and XPS studies of self-assembled monolayers of DNA. The monolayers are well-organized and display sharp vibrational peaks in the HREEL spectra. The electrons interact mainly with the backbone of the DNA. The XPS results indicate that, in most of the samples studied, the phosphates on the DNA are not charged.

The analysis of Re compounds has revealed a time-dependent photoreduction during x-ray photoelectron spectroscopy (XPS) measurements. Whilst such reduction of metal ions during XPS analysis is not uncommon, this is the first time that cases specifically for rhenium have been identified in the open literature.

Marcasite surfaces were analyzed using X-ray photoelectron spectroscopy (XPS) and auger electron spectroscopy (AES). XPS data of a pristine marcasite surface are used as a template to examine the characteristics of a marcasite surface after exposure to vigorous cleaning procedures and after reaction in oxygenated and mildly acidic (pH 3.0) solution. Minor changes are observed to the Fe(2p3/2) s...

ozone modification method and air-oxidation were used for the surface treatment of polyacrylonitrile(pan)-based carbon fiber. the surface characteristics of carbon fibers were characterized by x-ray photoelectron spectroscopy (xps). the interfacial properties of carbon fiber reinforced polyamide 6 (cf/pa6) composites were investigated by means of the single fiber pull-out tests. as a result, it...