Method of preparing transition metal oxide nano-particles

A technology of transition metals and nanoparticles, applied in the direction of nanostructure manufacturing, rare earth metal compounds, chromium oxide/hydrate, etc., can solve the problems of mass production obstacles, reproducibility reduction, pollution hazards, etc., and achieve easy reactivity, easy Controlling, Response Stabilizing Effects

Active Publication Date: 2010-09-15
THE IND & ACADEMIC COOPERATION & CHUNGNAM NAT UNIV
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Problems solved by technology

Among these methods, the chemical/thermal oxidation method has the risk of contamination due to oxidation, and it is difficult to produce uniform metal oxide particles of nanometer size
[0004] The most commonly used sol-gel method is not only a complex and costly multi-step process such as an additional high-temperature heat treatment process and a pollutant removal process for the production of a single-phase metal oxide, but also metal chlorides used as reactants, Th

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  • Method of preparing transition metal oxide nano-particles
  • Method of preparing transition metal oxide nano-particles
  • Method of preparing transition metal oxide nano-particles

Examples

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Embodiment 1

[0029] A peroxide-metalate solution having a Ti concentration of 0.14M was prepared by dissolving Ti metal powder (Aldrich, 268496) in a 30 wt% aqueous hydrogen peroxide solution. Then, isopropanol:water:nitric acid was mixed at a volume ratio of 1:1:0.1 to prepare a reaction solution, and 5 mL of the peroxide-metalate solution and 5 mL of the prepared reaction solution were mixed to prepare a mixed solution.

[0030] After filling the prepared mixed solution into an autoclave, a hydrothermal reaction was performed in an oven at 120°C for 2 hours to produce TiO 2 Anatase nanoparticles.

Embodiment 2

[0032] A peroxide-metalate solution having a Ti concentration of 0.005M was prepared by dissolving W metal powder (Aldrich, 510106) in a 30 wt% aqueous hydrogen peroxide solution. Then, isopropanol:water:nitric acid was mixed at a volume ratio of 1:1:0.14 to prepare a reaction solution, and 36 mL of the peroxide-metalate solution and 72 mL of the prepared reaction solution were mixed to prepare a mixed solution.

[0033] After filling the prepared mixed solution into an autoclave, a hydrothermal reaction was carried out in an oven at 98°C for 1 hour to produce WO with a hexagonal structure. 3 Nanoparticles.

[0034] figure 1 is a scanning electron micrograph of titanium dioxide manufactured in Example 1 of the present invention, figure 2 is the X-ray diffraction analysis result of titanium dioxide produced in Example 1, image 3 It is a scanning electron micrograph of tungsten oxide produced in Example 2.

[0035] Depend on figure 1 with image 3 It can be seen from the...

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Abstract

Provided is a method for preparing transition metal oxide nano-particles from a transition metal as a reactant. The method includes dissolving the transition metal into aqueous hydrogen peroxide to provide peroxi-metallate solution, and then adding a reactive solution containing an alcohol, water and an acid thereto to perform hydrothermal reaction. More particularly, the method for preparing transition metal oxide particles includes: dissolving transition metal powder as a reactant into aqueous hydrogen peroxide to provide a peroxi-metallate solution with a molar concentration of transition metal of 0.001-0.2 M; adding a reactive solution containing an alcohol, water and an acid to the peroxi-metallate solution to provide a mixed solution; and subjecting the mixed solution to hydrothermal reaction to provide transition metal oxide nano-particles.

Description

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Claims

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Application Information

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Owner THE IND & ACADEMIC COOPERATION & CHUNGNAM NAT UNIV
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