Quality Control of a Functionalized Polymer Catalyst by Energy Dispersive X-ray Spectrometry (EDX or EDS)

Abstract

Energy dispersive X-ray spectrometry (EDX or EDS) is a technique often implemented on scanning electron microscopes and a regularly used method for qualitative characterization of solid catalysts. This Technical Note reports a method for the determination of the metal content in a sulfonated polyether ether ketone in the form of an indium­(III) salt. The possibility of quantitative determination of the sulfur/indium ratio by EDX was assessed by calibration with two indium salts (sulfide and sulfate) readily available in good purity. The accuracy of the uncorrected instrument response was better than 1% under our conditions. A protocol for investigating the metal content of the solid catalyst is proposed, also providing information about the homogeneity of the metal distribution. Because of the simplicity of the sample preparation, the small quantity of material needed, and the rapidity of the EDX measurements, the method appears to be promising for quantitative characterization of solid catalysts.

A Brief Review on Solid Electrolyte Interphase Composition Characterization Technology for Lithium Metal Batteries: Challenges and Perspectives

“…It is an X-ray microanalysis technique cited as the characterization to acquire the distributions and content of the selected elements. 129 The EDS measurements can be employed to analyze the distribution of SEI species on the surface of it. Yuan et al 55 applied the results of EDS mapping in parts a−c and e−g of Figure 9 to confirm the uniform distribution of fluorine on the surface of cuboid particles.…”

“…Before the treatment of the heating at 250 °C, the specimen was taken for the EDS mapping in Figure 9k, EDS utilizes the high-energy electron beam to profile the image of samples by analyzing the pulses generated in the process of X-ray photons being emitted, thus destroying the sample surface as a result of the ionization of inner electrons. 129 When used to identify the constituent elements of SEI, it is unavoidable to take apart the cell for characterization. This will contaminate the specimens in the process of transfer and lead to inexact results.…”

“…EDS or EDX is an implemental technique for SEM or TEM. It is an X-ray microanalysis technique cited as the characterization to acquire the distributions and content of the selected elements …”

“…EDS utilizes the high-energy electron beam to profile the image of samples by analyzing the pulses generated in the process of X-ray photons being emitted, thus destroying the sample surface as a result of the ionization of inner electrons . When used to identify the constituent elements of SEI, it is unavoidable to take apart the cell for characterization.…”

(Fe-Co-Ni-Zn)-Based Metal–Organic Framework-Derived Electrocatalyst for Zinc–Air Batteries

“…EDS is employed to analyze the elemental composition of the electrocatalyst. By detecting the characteristic X-rays emitted by the elements in the material, it provides quantitative information about their relative concentrations [ 70 ]. The presence of Co, Mo, Fe, C, N, and S in the nanoflakes was confirmed by EDS, in the work done by Chhetri and researchers ( Figure 2 e,f) [ 69 ].…”