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. 2022 May 3;14:121. doi: 10.1007/s40820-022-00862-0

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© The Author(s) 2022

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Fig. 2 — High-resolution XPS spectra of a Bi 4f, b O 1s and c Cl 1s obtained from the as-synthesized BiOCl-NSs and Bi₂O₂(CO₃)_xCl_y. d O K-edge spectra, e C K-edge spectra and f Bi L₃-edge spectra of BiOCl, Bi₂O₂CO₃, Bi₂O₂(CO₃)_xCl_y and referenced samples. g Bi L₃-edge k²-weighted FT-EXAFS spectra of Bi₂O₂(CO₃)_xCl_y and Bi₂O₂CO₃ in R space. h Fitting analysis of Bi₂O₂(CO₃)_xCl_y using Bi–O, Bi–C and Bi–Cl paths. i Proposed geometric configuration of Bi₂O₂(CO₃)_xCl_y