Engineering single-atomic ruthenium catalytic sites on ... - Nature
2021年7月28日 · The Ru K-edge XANES spectra of Ru 1 /D-NiFe LDH in Fig. 2a shows that the edge energy is between Ru foil and RuO 2, demonstrating a cationic environment.
X-Ray Edge Energies - ESRF
Ru K edge 22127.70(32) 22119.56(58) 22117.91(55) Rh K edge 23230.23(32) 23221.99(30) 23220.14(44) Pd K edge 24357.63(36) 24352.59(20) 24350.91(51) Ag K edge 25523.71(39) 25515.59(30) 25515.51(48) Cd K edge 26720.58(41) 26713.29(20) 26712.94(71) In K edge 27949.69(44) 27940.39(30) 27940.72(69) ...
RuO2 electronic structure and lattice strain dual engineering for ...
2022年7月1日 · Here we report an electrochemical lithium intercalation method to improve both the activity and stability of RuO 2 for acidic oxygen evolution reaction. The lithium intercalates into the lattice...
Assignment of pre-edge features in the Ru K-edge X-ray …
2008年3月3日 · The nature of the lowest energy bound-state transition in the Ru K-edge X-ray absorption spectra for a series of Grubbs-type ruthenium complexes was investigated. The pre-edge feature was unambiguously assigned as resulting from formally electric dipole forbidden Ru 4d ← 1s transitions.
In situ constructing atomic interface in ruthenium-based …
2022年2月24日 · Here, we report an in-situ oxygen impregnation strategy to build abundant atomic interfaces composed of homogeneous Ru and RuO x amorphous hybrid-mixture with ultrafast charge transfer, for solar...
In Situ Ru K-Edge X-Ray Absorption Fine Structure Studies of ...
2000年9月30日 · The Fourier transform of the k 3-weighted extended X-ray absorption fine structure (EXAFS), k 3 χ(k), for the film polarized at +1.20V vs RHE is characterized by two shells attributed to Ru−O and Ru−Ru interactions with average distances of 1.94(1) and 3.12(2) Å, respectively, in agreement with results obtained ex situ for Ru 4+ in ...
Single-atoms Ru/NiFe layered double hydroxide electrocatalyst ...
2023年12月15日 · To figure out the valence state and coordination sphere of Ru, the XANES spectra of Ru in sample, Ru-foil, RuCl 3 and RuO 2 were measured. Ru K-edge XANES spectrum of Ru/NiFe has higher energy than Ru-foil but lower energy than RuCl 3. Linear fitting results show that the oxidation valence of Ru was 2.7 (Fig. 2 e) [61].
The Ru K-edge x-ray absorption near-edge structure (XANES) …
We have measured high-resolution Ru K-edge x-ray absorption spectra for the intermetallic La1-xCexRu2 system. Multiple-scattering calculations are made to explore the origins of different...
Misoriented high-entropy iridium ruthenium oxide for acidic water ...
2023年9月15日 · Here, we report a fast, nonequilibrium strategy to synthesize quinary high-entropy ruthenium iridium-based oxide (M-RuIrFeCoNiO 2) with abundant grain boundaries (GB), which exhibits a low overpotential of 189 millivolts at 10 milliamperes per square centimeter for OER in 0.5 M H 2 SO 4.
2019年11月15日 · We have measured high-resolution Ru K-edge x-ray absorption spectra for the inter-metallic La1−xCexRu2 system. Multiple-scattering calculations are made to explore the origins of different features observed in the experimental x-ray absorption near-edge structure (XANES) and their variation with Ce doping.