Mn3O4-MnO2 nano rod composite oxide as well as preparation method and application of Mn3O4-MnO2 nano rod composite oxide

A technology of composite oxides and nanorods, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, nanotechnology, etc. Step-by-step operation and other problems, to achieve the effect of low production cost, mild synthesis conditions, simple and efficient operation

Active Publication Date: 2014-12-17
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Although this method obtains Mn 3 o 4 -MnO 2 A two-component composite oxide, but the method used is obviously a complex multi-step operation, and a certain amount of strong acid is introduced, which is difficult to control and increases the production cost and the load on the ecological environment

Method used

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  • Mn3O4-MnO2 nano rod composite oxide as well as preparation method and application of Mn3O4-MnO2 nano rod composite oxide
  • Mn3O4-MnO2 nano rod composite oxide as well as preparation method and application of Mn3O4-MnO2 nano rod composite oxide
  • Mn3O4-MnO2 nano rod composite oxide as well as preparation method and application of Mn3O4-MnO2 nano rod composite oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] a kind of Mn 3 o 4 -MnO 2 Its preparation method of nanorod composite oxide comprises the following steps:

[0026] Use a pipette to pipette 20mL of deionized water into a 50mL polytetrafluoroethylene-lined hydrothermal kettle, then place 0.32mol potassium permanganate, 0.06moL glucose and 0.02moL sodium chloride in the above hydrothermal kettle Inside, after fully stirring evenly, seal and tighten the hydrothermal kettle, place it in an oven at 120°C, react for 6 hours, wash the product obtained by the reaction with distilled water for 3 times, separate and dry at 20°C for 24 hours, and you can obtain about 30 μm, Mn with a diameter of about 50-100 nm 3 o 4 -MnO 2 Nanorod two-component composite oxide.

[0027] The SEM characterization of the as-synthesized nanorod composites is as follows figure 1 Shown; From the XRD crystal form shown in Figure 2 and the chemical composition of XSP, it can be seen that the synthesized product is Mn 3 o 4 -MnO 2 Two-componen...

Embodiment 2

[0031] a kind of Mn 3 o 4 -MnO 2 Its preparation method of nanorod composite oxide comprises the following steps:

[0032] Use a pipette to pipette 20mL of deionized water into a 50mL polytetrafluoroethylene-lined hydrothermal kettle, then place 0.32mol potassium permanganate and 0.096moL glucose in the above hydrothermal kettle, and stir well , seal and tighten the hydrothermal kettle, place it in an oven at 125°C, react for 12 hours, rinse the product obtained by the reaction with distilled water for 3 times, separate and dry at 10°C for 30 hours, and then obtain a product with a length of about 5 μm and a diameter of about 80 -120nm Mn 3 o 4 -MnO 2 Nanorod two-component composite oxide.

Embodiment 3

[0034] a kind of Mn 3 o 4 -MnO 2 Its preparation method of nanorod composite oxide comprises the following steps:

[0035] Use a pipette to pipette 20mL of deionized water into a 50mL polytetrafluoroethylene-lined hydrothermal kettle, then place 0.32mol potassium permanganate, 0.032moL glucose and 0.128moL sodium chloride in the above hydrothermal kettle Inside, after fully stirring evenly, seal and tighten the hydrothermal kettle, place it in an oven at 110°C, react for 24 hours, wash the product obtained by the reaction with distilled water for 3 times, separate and dry at 15°C for 10 hours, and you can obtain a 50 μm, Mn with a diameter of about 30-80 nm 3 o4 -MnO 2 Nanorod two-component composite oxide.

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Abstract

The invention provides a Mn3O4-MnO2 nano rod composite oxide as well as a preparation method and application of Mn3O4-MnO2 nano rod composite oxide. The preparation method comprises the following steps: adding potassium permanganate, glucose and sodium chloride into de-ionized water, wherein the ratio of substance amounts is 1 to (0.1-0.3) to (0-0.4) and the concentration of potassium permanganate in the de-ionized water is 12mol / L-18mol / L; agitating uniformly and sealing; carrying out heating reaction a temperature of 110-125 DEG C for 6-24 hours; and washing a product obtained by the reaction with distilled water, carrying out centrifugal separation, and drying in vacuum to obtain the Mn3O4-MnO2 nano rod composite oxide. The prepared product is of a rod-shaped structure and has the length of 5-50 microns and the diameter of 30-120nm. The prepared Mn3O4-MnO2 nano rod composite oxide has an important effect in the aspect of catalytic oxidation. Compared with the prior art, the process is very simple and controllable and multi-step operation is not needed; any surfactant, any template agent and any acid-base reagent are not introduced, so that no pollution and no emission are caused; and synthesis conditions are very moderate and the production cost is low.

Description

technical field [0001] The invention belongs to the technical field of preparation of two-component metal oxides, in particular to a Mn 3 o 4 -MnO 2 Nanorod composite oxide and its preparation method. Background technique [0002] Due to their special outer orbital electronic structure, transition metal oxides have good catalytic properties in the field of catalysis and have significant development potential, and have received extensive attention and applications. Among the many transition metal oxide catalytic materials, manganese oxide is one of the most concerned multi-metal oxide catalytic materials because of its adjustable multiple valence states, green, non-toxic, and low price. Because of its multiple variable valence states, manganese oxide has special properties in light, electricity, and magnetism. Therefore, it has received extensive attention in the fields of catalysis, magnetic materials, battery materials, and sensing, and has immeasurable development and p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34C01G45/02B82Y40/00B82Y30/00
Inventor 杨仁春戴永明刘琪
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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