Fast scan X-ray absorption spectrometer

Guochuang Technology InstrumentFast scan X-ray absorption spectrometerSuperXAFS V8000

Core parameters

1. Energy range: 5-12keV

2. Energy resolution: 1-3eV@7-9keV

3. Luminous flux: from the detector to the maximum counting rate ≥ 1 × 10 ⁶ photons/s @ 8keV

4. Monochromator crystal: equipped with a cylindrical curved spectral crystal with a curvature radius of 250mm

5. Surface detector: pixel size 75um * 75um

6. Effective area: 77mm * 38mm

Guochuang Technology InstrumentFast scan X-ray absorption spectrometerSuperXAFS V8000

X-ray Absorption Fine Structure Spectrometer (XAFS/XES) is a non-destructive technique used to study the local structure and electronic state of materials. This technology utilizes the interaction between X-rays and matter to obtain the near edge absorption spectrum (XANES), extended far edge absorption spectrum (EXAFS), and specific band emission spectrum of a specified element, which are used to analyze the chemical and valence states of the element, the coordination structure of the local environment around the atom, and to distinguish the coordination atom category of the measured element. It is an important means of characterizing the micro coordination structure of crystalline and amorphous materials. XAFS/XES is mainly used for the analysis of valence states, coordination structures, and electronic states of metal ions in catalysts, alloys, ceramics, environmental pollutants, various crystalline and amorphous materials, and biological samples, as well as the study of the dynamic evolution process of local structures of materials under changes in thermal, optical, electric, and magnetic fields.

Application fields of X-ray absorption spectrometer

Catalyst research

Analyze the metal valence states of catalyst active centers (such as Pt ²)⁺/Pt⁰）The coordination environment and atomic spacing reveal the catalytic reaction mechanism (such as the oxygen reduction activity of fuel cell catalysts).

Track the structural evolution of catalysts in reactions, such as the valence state changes of Cu based catalysts in CO oxidation reactions.

Characterization of nanomaterials

Determination of surface atomic coordination and defect concentration (such as TiO) of nanoparticles (such as quantum dots, nano oxides)₂Oxygen vacancies in nanotubes.

Study the interface electronic structure of nanocomposites, such as charge transfer between graphene and metal nanoparticles.

Functional Material Analysis

Detecting battery electrode materials (such as LiCoO)₂）Optimizing battery performance through changes in elemental valence states during lithium insertion/extraction processes.

Analyze magnetic materials (such as Fe)₃O₄）Explain the mechanism of magnetic ordering in the local magnetic environment.