XPS Analysis (Element Type and Oxidation Number)

XPS is an acronym derived from X-ray photoelectron spectroscopy, which stands for X-ray photoelectron spectroscopy. With this method, XPS surface analysis of materials ranging from metals to polymers is performed.

As the demand for high-performance materials increases, so does the importance of surface engineering. The surface of the material is the point of interaction with the external environment and other materials and influences factors such as corrosion rates, catalytic activity, adhesive properties, wettability, contact potential and failure mechanisms. Surface modification is used to change or improve these properties. Surface analysis is used to understand surface chemistry and improve the effectiveness of surface engineering. From non-stick cookware coatings to thin-film electronics and bioactive surfaces, X-ray photoelectron spectroscopy (XPS) is one of the standard tools for surface characterization.

X-ray photoelectron spectroscopy (XPS), also known as electron spectroscopy for chemical analysis, is a technique for analyzing the surface chemistry of a material. With this method, the chemical and electronic state of atoms in a material as well as the elemental composition are measured.

Surface analysis contributes to understanding the following areas: wear, burnout, grain boundary separation, coatings, lubrication, oxidation, fatigue, semiconductor/microelectronics, microcircuits.

Generally, changes in the oxidation numbers of atoms in each compound are observed during a reaction and their chemical reactions are followed. Oxidation numbers also play an important role in the systematic naming of chemical compounds. By definition, the oxidation number of an atom is the charge the atom would have if the compound was composed of ions. In a neutral substance containing atoms of only one element, the oxidation number of an atom is zero. Thus, the atoms in O2, O3, P4, S8 and aluminum metal all have oxidation number 0. The oxidation number of simple ions is equal to the charge on the ion. For example, the oxidation number of sodium in the Na+ ion is +1 and the oxidation number of chlorine in the Cl- ion is -1.

In short, XPS is an analytical method. With this method, the kinetic energy of photoelectrons emitted from a sample exposed to monochromatic X-rays is measured. The energies of the emitted electrons are characteristic of the elements present and their oxidation state.

Our organization also provides XPS analysis (element type and oxidation number) testing services with its trained and expert staff and advanced technological equipment, among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors.