Local Structure around Pd Atoms in Pd<SUB>42.5</SUB>Ni<SUB>7.5</SUB>Cu<SUB>30</SUB>P<SUB>20</SUB> Excellent Glass-Former Studied by Anomalous X-ray Scattering

Abstract

In order to study local structure around the Pd atoms in Pd 42:5 Ni 7:5 Cu 30 P 20 excellent metallic glass-former, an anomalous X-ray scattering (AXS) experiment was performed at energies close to the Pd K absorption edge at the beamline BM02 of the European Synchrotron Radiation Facility. The differential structure factor, Á Pd SðQÞ, was obtained with a good statistical quality, which demonstrates that a pre-shoulder at about 20 nm À1 , indicating the existence of an intermediate-range order, originates from the Pd-Pd atomic correlation. The first peak in the differential pair correlation function, Á Pd gðrÞ, shows a longer inter-atomic length around the Pd atoms than the average value. The local structure around the Pd atoms is discussed in detail by comparing to the previous experiments of AXS and electronic structure.

Surfactant‐directed Pd‐nanoparticle assemblies as efficient nanoreactors for water remediation

“…2 The presence of the PdNPs in the assemblies are clearly observed in the HRTEM image shown in Figure 2F, in which the inset evidences a distance of 0.231 nm between the two nearest atom rows, as expected for the (111) lattice spacing of face-centered cubic Pd crystals. 3,12,43,44 The PdNPs have an average size of about 5 nm (details are provided in the Supporting Information). The EDS composition analysis further confirms the presence of Pd in the asobtained assemblies ( Figure 2E); Cu originates from the Cu grids used in TEM.…”