A facile strategy to prepare FeNx decorated PtFe intermetallic with ...
2023年9月1日 · The extended X-ray absorption fine structure spectra (EXAFS) in Fig. 2 d show a significant Pt-Pt bond (2.70 Å) in CNT-PtFe@FeNC catalyst, while the bond length of Pt-Pt in …
Electron-rich isolated Pt active sites in ultrafine PtFe
2021年4月1日 · Herein, we report an in-situ location-restricted migration (LRM) strategy to construct a PtFe 3 intermetallic catalyst supported hollow N-doped carbon spheres (PtFe 3 …
Fully-exposed Pt-Fe cluster for efficient preferential ... - Nature
2022年11月10日 · In this work, we reported a novel catalyst, fully-exposed bimetallic Pt-Fe clusters anchored on the defective graphene/nanodiamond (ND@G) hybrid support, where the …
In-situ atomic tracking of intermetallic compound formation …
2024年8月22日 · Here, we employ aberration-corrected high-angle annular dark-field scanning transmission electron microscopy (AC-HAADF-STEM) to track the formation process of IMCs …
Carbon‐Embedded Pt Alloy Cluster Catalysts for Proton Exchange …
2024年5月9日 · In the Fe K edge EXAFS of the PtFe/NcPS catalyst (Figure S10b, Supporting Information), a strong scattering peak attributed to Fe-C(O) bonding and a smaller Fe-Pt …
Orbital electron delocalization of axial-coordinated modified FeN4 …
2024年7月8日 · Detailed X-ray absorption fine spectroscopy (XAFS) further confirms the axial-coupling effect of the FeN 4 CCl substrate by configuring the Fe–N bond to ∼1.92 Å and the …
Intermetallic Compounds as an Alternative to Single‐atom Alloy ...
2019年12月9日 · Isolation of Pt atoms and long-range atomic ordering were confirmed by in situ extended X-ray absorption fine structure (EXAFS) and synchrotron X-ray diffraction (XRD) …
The effect of Fe on SiO2-supported Pt catalysts: Structure ...
2009年8月15日 · SiO 2-supported PtFe catalysts with a wide range of Pt/Fe ratios were prepared from individual H 2 PtCl 6 and Fe(NO 3) 3 precursors and characterized by high-resolution …
Pt/Fe2O3 with Pt–Fe pair sites as a catalyst for oxygen ... - Nature
2021年5月20日 · Here we load platinum onto α-Fe 2 O 3 to construct a highly active and stable catalyst with dispersed Pt–Fe pair sites. We propose that the Pt–Fe pair sites have partially …
Synthesis and Structural Characterization of SiO2-Supported PtFe ...
2011年2月8日 · Fourier transform infrared (FTIR) and extended X-ray absorption fine structure (EXAFS) spectroscopies were used to characterize the species formed following deposition of …
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