Abstract
We show anion intercalation reaction to ternary palladate Bi2PdO4 (P4/ncc) with one-dimensional (1D) channels comprised of Bi3+ ions. By low-temperature treatment with XeF2, fluoride anions are inserted in the 1D pores (4b site), giving Bi2PdO4Fx (x < 0.5) where only Pd2+ cations are oxidized. This F– insertion causes anisotropic lattice evolution with expansion on the ab plane and contraction along the c axis, and thus 1D pore flexibly changes the size depending on the F– density. The 1D channels are also able to capture O2− anions to form Bi2PdO4+δ (δ ~ 0.1) when heated under an O3 gas flow.
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