Fig. 2: In-situ characterizations on the formation of In2O3-x overlayers. | Nature Communications

Fig. 2: In-situ characterizations on the formation of In2O3-x overlayers.

From: Inverse In2O3-x/Ni interfaces via Ni3InC0.5 surface reconstruction for efficient CO2 hydrogenation to methanol

Fig. 2: In-situ characterizations on the formation of In2O3-x overlayers.The alternative text for this image may have been generated using AI.

a Quasi-in-situ AC-HAADF-STEM image of the NiInCZr catalyst transferred using glove boxes and Mel-Build Double tilt Atmos Defend holder. b Enlarged AC-HAADF-STEM image of the fresh NiInCZr catalyst. c In-situ AC-HAADF-STEM image of a supported Ni3In NP after one and a half hours of reaction. d In-situ Raman spectra of the unsupported Ni3InC0.5 sample under 25 vol% CO2/H2 atmosphere, 400 °C, 1 bar. e In-situ Ni 3 d, In 3 d, O 1 s, and C 1 s XPS spectra of the NiInZrO precursor treated by H2 then 25 vol% CO2/H2 at 400 °C, 1 bar. BE: binding energy. f,g Proportion of surface In3+ species calculated from XPS In 3 d spectra: NiInO, NiInZrO, and NiInCZr sample subjected to a sequential in-situ XPS experiment (f) and NiInCZr catalysts synthesized under different CO/CO2/H2 atmosphere (g). h H2O signals from H2-TPR coupled with MS corresponding to NiInCZr catalysts synthesized under the same conditions. CO/CO2/H2 gas used: CO/H2 (1:2), CO/CO2/H2 (3:3:14), and CO2/H2 (1:3).

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