A redox-assisted supramolecular assembly of manganese oxide nanotube |
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| Affiliation: | 1. College of Chemistry and Chemical Engineering, Hunan University; Key Laboratory of Chemometrics and Chemical Biological Sensing Technologies, Ministry of Education, Changsha 410082, P.R. China;2. College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P.R. China;1. State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China;2. Institutes of Biomedical Science and Department of Chemistry, Fudan University, Shanghai 200032, China;1. School of Chemistry, University College of Science, University of Tehran, PO Box 14155-6455, Tehran, Iran;2. Department of Chemistry, Faculty of Sciences, K.N. Toosi University of Technology, Tehran 16617, Iran |
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| Abstract: | In this paper, we report the hydrothermal synthesis of manganese oxide nanotube from an aqueous medium of pH 7, using KMnO4 and MnCl2 as inorganic precursors, polyoxyethylene (10) nonyl phenyl ether (TX-10) a surfactant and acetaldehyde an additive. The characterization of X-ray diffraction (XRD), transmission electron microscopy (TEM), selected area electron diffraction (SAED) and N2 adsorption at 77 K (BET) reveals that the synthesized manganese oxide nanotube has a mesopore size of ca. 3.65 nm and a wall thickness of ca. 12 nm, with the wall being composed of microporous crystals of monoclinic manganite. The X-ray photoelectron spectroscopy (XPS) result demonstrates a decrease of the binding energy of the Mn3+ in the manganese oxide nanotube, which may be related to both the nanotubular morphology and the crystalline pore wall. A mechanism of a redox-assisted supramolecular assembly, regulated by acetaldehyde, is postulated. |
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