Fig. 1: Coordination of Zn-O-Cr sites in atomically-synergistic binuclear-site catalyst (ABC). | Nature Communications

Fig. 1: Coordination of Zn-O-Cr sites in atomically-synergistic binuclear-site catalyst (ABC).

From: Atomically synergistic Zn-Cr catalyst for iso-stoichiometric co-conversion of ethane and CO2 to ethylene and CO

Fig. 1

a Schematic illustration of the fabrication process of Zn-O-Cr ABC. b Representative TEM and HAADF-STEM images and EDS mapping of Zn-O-Cr ABC with Zn/Cr ration of 3/1; c The proportion of Znδ+ \((0 \, < \, \delta \, < \, 2)\) (left) and Cr6+ (right) with varying Zn/Cr ratios (Results derived from Auger spectra of Zn LMM and Cr 2p3/2 XPS spectra); d Enlarged electron transition features in Zn and Cr K-edge XANES spectra; e k3-weighted Fourier-transformed extended X-ray absorption fine structure (FT-EXAFS) spectra (Zn K-edge) of Zn-O-Cr ABCs with varying Zn/Cr ratios, with Zn foil and ZnO as references; f Coordination number (CN) of Zn-O-Cr(Zn) and Cr-O in Cr6+ state in Zn-O-Cr ABCs with varying Zn/Cr ratios.

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