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Several one -dimensional manganese oxide Preparation and Characterization

Author: ZhouTao
Tutor: YangBaoJun
School: Hefei University of Technology
Course: Chemical processes
Keywords: One -dimensional nanostructures Self- sacrificing template MnO2 Mn2O3 MnOOH Degradation Methylene blue
CLC: TB383.1
Type: Master's thesis
Year: 2009
Downloads: 87
Quote: 0
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Abstract


Paper aims to explore the self- sacrificial template synthesis of manganese oxide prepared by a one-dimensional nanomaterials . In the literature review , based on the use of synthetic route reported in the literature with different crystal forms MnO 2 one -dimensional nanostructures powder ; to one-dimensional structure of the prepared powders were self- sacrificing template By the reaction system selection and control of process conditions , under milder reaction conditions successfully synthesized manganese oxide nanotubes , nanowires and nanotubes manganese oxide oxygen hydrogen , using x-ray diffraction, transmission electron microscopy, constituency electron diffraction , field emission scanning electron microscopy, high-resolution transmission electron microscopy and other modern testing technology for the prepared samples were related to the structural characterization , and the prepared Mn203 nanotubes and nanowires catalytic oxidation degradation of methylene blue wastewater possibility a preliminary study . The main contents include : 1, reported in the literature prepared by hydrothermal crystal β-MnO 2 nanotube self- sacrificial template , using low-temperature calcination method first synthesized Mn 2 < / sub> O 3 nanotubes . 2 , to literature prepared by hydrothermal reaction monocrystalline β-MnO 2 nanotube self- sacrificial template , was first synthesized by hydrothermal method of MnOOH nanotubes . 3 , to literature prepared by hydrothermal reaction monocrystalline α-MnO 2 nanowires self- sacrifice as a template , using low-temperature calcination synthesized Mn 2 O 3 nanowires . 4 , the prepared Mn 2 O 3 nanotubes and nanowires on H 2 O 2 catalyzed degradation of methylene blue solutions exhibit good catalytic performance of the experimental conditions, the maximum decolorization rate could reach 85.2% and 97.94% .

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