Layer charge sign transition [Z]–→[Z]+ of lamellar metal oxides
Abstract
A novel topotactic process with charge sign conversion is reported for a complex layered system; the ternary oxide Na+[Ni3/4Fe1/4O2]– with macroanion layers yields highly crystalline hydrotalcite type hydroxides [Ni3/4Fe1/4(OH)2]1/4+(X–)1/4 with macrocation layers and mobile interlayer anions via a redox–protolysis mechanism.
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