Combining the AP-XPS results with the results of in situ SXRD and XAS allows obtaining a full picture of the bulk and the surface properties of the catalysts under their working state. Palladium and Pt atomic fractions and oxidation states obtained with three photon energies are displayed in Fig...
The layered materials, two-dimensional (2D) transition metal dichalcogenides (TMDs) have attracted increasing attention because of their unique properties in the atomic structures, bandgaps, electronic properties, electrochemistry activities, and the potential applications in devices. Till now, most research...
A simple and efficient cloud point extraction procedure has been described for the pre-concentration and separation of ultra trace levels of Pt, Pd and Au ... NN Meeravali,SJ Jiang - 《Journal of Analytical Atomic Spectrometry》 被引量: 67发表: 2008年 Formation and Mechanical Properties of Po...
In aqueous mediums, the chemical environment for catalytic reactions is not only comprised of water molecules but also of corresponding ionized species, i.e., hydronium ions, which can impact the mechanism and kinetics of a reaction. Here we show that in aqueous-phase hydrogenation of furfural ...
Au144xPdx(SR)60alloy nanomolecules were synthesized and characterized by ESI mass spectrometry to atomic precision. The number of Pd atoms can be varied by changing the incoming metal ratio and plateaus at 7 Pd atoms. Based on the proposed 3-shell structure of Au144(SR)60, we hypothesize ...
Figure 2. Physicochemical properties of PDA and PDA-Pd (A) Dispersibility and stability test of PDA and PDA-Pd in different solutions. (B) The degradability of PDA-Pd NPs. (C) In vitro photothermal images of PBS, PDA, and PDA-Pd. (D) Photothermal curves of PDA-Pd at different concentr...
The illustration of the stepwise synthesis process for Pd@H-ZrO2/NC and contrastive Pd@B-ZrO2/NC (color online). 3.1 Characterization of structural properties The powder XRD patterns of H-UiO-66-NH2 synthesized under water system were almost identical to that of calculated B-UiO-66-NH2 except...
The average bond length in Pd clusters Pdn, n = 4–309: A density-functional case study on the scaling of cluster properties The average bond length in Pd clusters Pdn, nƒ4 – 309:A density-functional case study on the scaling of cluster properties - Krüger, NÖrtemann... S Kru?
the thicknesses of the Pd shells were estimated to be (1.8 ± 0.4) nm and (3.4 ± 0.4) nm (see Supplementary Note1). For simplicity, we refer to the colloids as Au67 NS, Au67@Pd2, and Au67@Pd4. These parameters were employed to simulate the optical properties of th...
and XAS, We performed near-ambient pressure X-ray photoelectron spectroscopy (NAP-XPS) to in-situ investigate the surface properties of the PdSn catalysts (both PdSn nanoparticle and PdSn nanowire prepared via one-step and two-step approaches) in the flowing O2, H2and O2/H2mixture (Fig.4b–...