Recent progress on operando three-dimensional XAFS imaging of polymer electrolyte fuel cell, which is one clean and efficient energy systems, reported. The combination X-ray CT provides us the images morphology, catalyst distribution, chemical state metal catalysts in PEFC.

Using an operando time-resolved XAFS technique at the Cu and Ce K-edges, we have discovered that the synchronization of Cu and Ce valence change in Cu/CeO2 under periodic (rich-lean cycling) operation can improve the catalytic activity for NO reduction at low temperature.

The XDD beamline (http://ssls.nus.edu.sg/facility/beamlines/xdd/xdd.htm) at SSLS delivers a tunable monochromatized photon source with high resolution in a wide energy range (2.3-10 keV). This hard x-ray light source is ideal for diffractometry, fluorescence detection and absorption spectroscopy, especially the study of XAFS (x-ray absorption fine structure) and XANES ( X-ray Absorption Near Ed...

The oxidation state and coordination environment of antimony (Sb) incorporated into polyethylene terephthalate (PET) bottles were estimated based on X-ray absorption fine structure (XAFS) at Sb K-edge. Prior to XAFS analyses, Sb concentrations in 177 PET bottles collected in Japan and China were determined, showing that 30.5% and 100% of Japanese and Chinese PET bottles, respectively, contained...

Controlling the stoichiometry of supported bimetallic nanoparticles is essential in many catalytic reactions, notably selective CO2 hydrogenation. Thus, a new strategy to ensure preferred (1:1) PdZn presented, involving deposition heterobimetallic precursor, [PdZn(μ-OOCMe)4]2 on CeZrOx support. After calcination and reduction, material contained mainly alloy, as revealed by powder XRD XAFS, fur...

A distinguish feature of high-entropy alloys (HEAs) is well-defined crystalline structure with chemical disorder. While, local lattice distortion a longstanding issue in HEAs and more challenging than traditional alloys. However, reports on are rarely related to compositions. Here, we use synchrotron radiation facility based XRD X-ray absorption fine (XAFS) examine averaged element specified di...