Search results for "HERFD"
showing 3 items of 3 documents
Experimental observation of Electronic Metal support interaction: investigation of Au/Ceria catalysts by HERFD–XANES
2015
In this paper we report the result of a recent experiment of high resolution XANES (HERFD-XANES) which evidenced this modification suggesting that gold clusters with very similar size can have a modified electronic structure (the empty d-Density-of-states) when they are deposited on ceria and titania oxide
Dynamic Role of Gold d-Orbitals during CO Oxidation under Aerobic Conditions
2022
High-energy-resolution fluorescence detection-X-ray absorption near-edge structure (HERFD-XANES) at the Au L3 edge was used to study gold catalysts supported on ceria in order to unravel the role of gold 5d orbital modifications during the activation of molecular oxygen. The variations in the HERFD-XANES resonance peak, which are directly correlated with the d-band occupancy, were monitored in situ during the redox process of the CO oxidation at room temperature under both aerobic and anaerobic conditions. Interestingly, upon the oxidation treatment and also during the aerobic CO oxidation treatment, the gold d-band fluctuates around an average value, proving that the gold clusters are part…
Study of the thermochromic phase transition in CuMo1−xWxO4 solid solutions at the W L3-edge by resonant X-ray emission spectroscopy
2021
This is the peer reviewed version of the following article: I. Pudza, A. Kalinko, A. Cintins, A. Kuzmin, Acta Mater. 205 (2021) 116581, which has been published in final form at https://www.sciencedirect.com/science/article/abs/pii/S1359645420310181 This article may be used for non-commercial purposes in accordance with Elsevier Terrms and Conditions for Self-Archiving.