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Layered manganese oxides with basal spacings up to 38.1Å have been synthesized by a facile novel method in which cationic surfactant CTAB directly reacts with MnSO 4 .H 2 O and NaOH. The as-synthesized samples have expanded birnessite-type layered structures characterized by powder XRD and TEM. Synthetic parameters that are important to the formation and the basal spacing of the layered...
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