Fig. 2: Preparation and structure characterization of antioxidase-like biocatalytic materials. | Nature Communications

Fig. 2: Preparation and structure characterization of antioxidase-like biocatalytic materials.

From: Bioinspired artificial antioxidases for efficient redox homeostasis and maxillofacial bone regeneration

Fig. 2

The synthesis processes and crystal structures of (a) Ru-hydroxide and (b) Ru-oxide. Atom colors: cyan, Ru; white, O; pink, H; wathet blue, Co; and navy blue, Ni. AC-HAADF-STEM images (Ru atoms are marked by yellow circles), HAADF-STEM images, and the corresponding elemental mapping images of (c) Ru-hydroxide and (d) Ru-oxide. High-resolution XPS of (e) Ru 3p and (f) O 1s of Ru-hydroxide and Ru-oxide, M-O indicates the metal-O bond. g Raman spectra of Ru-hydroxide and Ru-oxide. Atom colors: white, O; pink, H; wathet blue, Co; and navy blue, Ni. h Ru K-edge XANES spectra, (i) Ru oxidation state, and (j) Fourier-transformed k2-weighted EXAFS spectra of Ru-hydroxide and standard samples (Ru foil, RuCl3, and RuO2). k WT analysis at the Ru K-edge of different samples. Experiments were repeated independently (c–g) three times with similar results. In (e–h), a.u. indicates the arbitrary units. Source data are provided as a Source Data file.

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