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Controllable preparation method of Ag-manganese monoxide nanorods

A technology of manganese monoxide and nanorods, which is applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., and can solve problems such as the coexistence of multivalent states

Active Publication Date: 2014-04-02
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the existing difficulties in the preparation of pure-phase one-dimensional manganese oxides in the prior art, especially the preparation of one-dimensional nanomaterials by simple and mild methods, including the use of manganese organic compounds, high-temperature reactions, and multivalent State coexistence problem, provide a preparation method of Ag-manganese monoxide nanorods by in situ redox reaction

Method used

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Examples

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Embodiment 1

[0019] (1) Using silver nitrate and manganese (II) acetate as raw materials and deionized water as solvent, prepare 10 mL of 10 mM silver nitrate solution and 100 mL of 20 mM manganese acetate solution. 10mg of polyvinylpyrrolidone (PVP, K=30000) is a surfactant. (2) Add the silver nitrate solution dropwise to the manganese acetate aqueous solution. After the reaction, let it stand overnight, and then centrifuge and wash it several times to collect the precipitate. (3) Finally, the precipitate was dried at 80°C and ground, and the obtained powder was placed in a tube furnace under the protection of helium (the temperature rising rate was 20°C / min, from room temperature to 600 ℃), roasted for 5h to obtain. figure 1 It is the XRD spectrum of the prepared a sample and the product after roasting at 600°C.

Embodiment 2

[0021] (1) Using silver acetate and manganese (II) nitrate as raw materials and deionized water as solvent, prepare 10 mL of 50 mM silver acetate solution and 100 mL of 200 mM manganese nitrate solution. 100mg of polyvinylpyrrolidone (PVP, K=30000) is a surfactant. (2) Add the silver acetate solution dropwise to the manganese nitrate aqueous solution. After the reaction, let it stand overnight, and then centrifuge and wash it several times to collect the precipitate. (3) Finally, the precipitate was dried at 80°C and ground, and the obtained powder was placed in a tube furnace under the protection of helium (the temperature rising rate was 1°C / min, from room temperature to 900°C) and roasted for 1h. figure 2 TEM spectra of the prepared samples.

Embodiment 3

[0023] (1) Using silver nitrate and manganese (II) acetate as raw materials and deionized water as solvent, prepare 10mL of 10mM silver nitrate solution and 100mL of 200mM manganese acetate solution. 56mg of polyvinylpyrrolidone (PVP, K=30000) is a surfactant. (2) Add the silver nitrate solution dropwise to the manganese acetate aqueous solution. After the reaction, let it stand overnight, and then centrifuge and wash with acetone / water several times to collect the precipitate. (3) Finally, the precipitate was dried at 80°C and ground, and the obtained powder was placed in a tube furnace under the protection of helium (the temperature rising rate was 5°C / min, from room temperature to 800 ℃), roasted for 4h to obtain. image 3 TEM spectra of the prepared samples.

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Abstract

The invention relates to a controllable preparation method of Ag-manganese monoxide nanorods and especially relates to a method for controllable preparation of the Ag-manganese monoxide nanorods by an in-situ oxidation-reduction reaction technology. The method solves the problems of the prior art of pure one-dimensional manganese monoxide preparation and especially solves the problems of one-dimensional nanomaterial preparation adopting the simple and mild method, and the problems comprise manganese organic compound use, high-temperature reaction and multi-valence state coexistence in the reaction.

Description

technical field [0001] The invention belongs to the field of preparation of one-dimensional nanometer catalytic materials, and in particular relates to a method for controllably preparing Ag-manganese monoxide nanorods through an in-situ redox method. Background technique [0002] One-dimensional (1-D) nanomaterials (such as nanowires, nanobelts, nanorods, nanotubes, etc.) have unique properties and potential applications in the fields of catalysis, electronics, and solar energy, and their preparation methods have attracted extensive attention[Adv. Mater., 2003, 15: 353-389]. To date, most research efforts have focused on the synthesis of pure phase systems of 1D nanomaterials, including metal / metalloids (e.g., Au and Ag) and metal oxides (e.g., TiO 2 )[ Adv. Mater., 2012,24:4801-4841; Angew. Chem. Int. Ed., 2009, 48(1): 60-103; Inorg. Chem., 2006, 45: 6944-6949]. Compared with pure phase 1-D nanomaterials, by constructing different systems p-n Junction, or through the co...

Claims

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Application Information

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IPC IPC(8): B01J23/68H01M4/90
CPCY02E60/50
Inventor 吕晓萌魏晓骏刘军吴子伟谢吉民
Owner JIANGSU UNIV
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