Single crystalline MnOOH multipods were synthesized by a reductive hydrothermal method for the first time based on the use of PEG200 to reduce KMnO4. When the surfactant, i.e. cetyltrimethylammonium bromide (CTAB), was added into the starting reactant, one-dimensional (1D) single crystalline MnOOH nanowires were formed instead of multipods. Powder X-ray diffraction (XRD), transmission electron microscopy (TEM) and high resolution transmission electron microscopy (HRTEM) were employed to characterize the microstructure of the products. A possible formation mechanism was proposed. The intermediate products with a lamellar morphology rolled into multipods or nanowires when different surfactants were absorbed on their surface during the further reaction process. (c) 2006 Elsevier B.V. All rights reserved.
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