A kind of preparation method containing molybdate radical solution

Abstract

The invention provides a molybdate-containing acid radical solution preparation method, and belongs to the field of preparation and applications of nano-materials. The method includes the steps: providing molybdate-containing acid radical suspension; irradiating the molybdate-containing acid radical suspension by an ultraviolet pulse laser under a stirring condition to obtain molybdate-containingacid radical solution. A molybdate-containing acid radical is derived from molybdic acid and cobalt molybdate or nickel molybdate, the irradiation wave length of the ultraviolet pulse laser is 355nm,pulse width is 5-17ns, and pulse frequency is (0, 20) Hz. By the aid of a liquid-phase ultraviolet pulse laser irradiation technique, mass, pure and soluble molybdic acid, cobalt molybdate and nickelmolybdate solution can be synthesized in a one-step manner. Compared with similar materials on the market, the prepared molybdate-containing acid radical solution has water solubility, does not have impurities and can serve as a molybdenum source to be used and can be prepared into multifunctional molybdenum-based nano-materials such as molybdenum oxide, nickel molybdate and cobalt molybdate nano-materials through after-treatment such as spraying, printing and heat treatment.

Description

technical field

[0001] The invention belongs to the technical field of nanomaterial preparation and application, and in particular relates to a method for preparing a molybdate-containing solution. Background technique

[0002] Molybdenum-based nanomaterials (molybdenum oxide, molybdenum sulfide, molybdate, etc.) have been widely used in the fields of electronic display, gas sensing, flame retardancy, photoelectricity, and industrial catalysis due to their excellent physical and chemical properties. It is of great research significance and practical value to enrich the acquisition methods and types of molybdenum-based nanomaterials.

[0003] At present, the preparation of molybdenum-based nanomaterials is usually achieved by physical and chemical processes such as mechanical grinding, high-temperature hydrothermal, high-temperature solid-state reaction, etc. As a reaction precursor, molybdate ions have the advantages of low cost and easy mass production, but the presence of...

Examples

preparation example Construction

[0022] The invention provides a kind of preparation method containing molybdate radical solution, comprises the following steps:

[0023] Molybdate-containing suspensions are provided, and the molybdate-containing radicals are derived from molybdic acid, cobalt molybdate or nickel molybdate;

[0024] Under stirring conditions, irradiate the molybdate-containing suspension with an ultraviolet pulse laser to obtain a molybdate-containing solution, the wavelength of the ultraviolet pulse laser irradiation is 355nm, the pulse width is 5~17ns, and the pulse frequency is (0 ,20] Hz.

[0025] The invention provides a molybdate-containing suspension, and the molybdate-containing molybdate is molybdic acid, cobalt molybdate or nickel molybdate. In the present invention, the concentration of the molybdate-containing suspension is preferably 0.01-10 g / L, more preferably 3-4 g / L.

[0026] In the present invention, when the molybdate-containing molybdate is preferably molybdic acid, the ...

Embodiment 1

[0042] The molybdic acid (H 2 MoO 4 ) suspension (the liquid in the suspension is deionized water, 18MΩ / cm), adjust the laser parameters at 20Hz pulse frequency, 60mJ single pulse energy range, the whole irradiation process is assisted by continuous magnetic stirring, stirring speed 500rpm, Observe the color and state changes of the dispersion liquid; after 30 minutes, when the powder particles in the suspension solution completely disappear, the aqueous molybdic acid solution can be obtained.

Embodiment 2

[0044] The molybdic acid (H 2 MoO 4 ) suspension (the liquid in the suspension is ethanol), adjust the laser parameters in the 20Hz pulse frequency, 30mJ single pulse energy range, the whole irradiation process is assisted by continuous magnetic stirring, the stirring speed is 500rpm, observe the color and state of the dispersion Change; after 50 minutes, the ethanol solution of molybdic acid can be obtained after the powder particles in the suspension solution completely disappear.

technical field

[0001] The invention belongs to the technical field of nanomaterial preparation and application, and in particular relates to a method for preparing a molybdate-containing solution. Background technique

[0002] Molybdenum-based nanomaterials (molybdenum oxide, molybdenum sulfide, molybdate, etc.) have been widely used in the fields of electronic display, gas sensing, flame retardancy, photoelectricity, and industrial catalysis due to their excellent physical and chemical properties. It is of great research significance and practical value to enrich the acquisition methods and types of molybdenum-based nanomaterials.

[0003] At present, the preparation of molybdenum-based nanomaterials is usually achieved by physical and chemical processes such as mechanical grinding, high-temperature hydrothermal, high-temperature solid-state reaction, etc. As a reaction precursor, molybdate ions have the advantages of low cost and easy mass production, but the presence of...

Examples

preparation example Construction

[0022] The invention provides a kind of preparation method containing molybdate radical solution, comprises the following steps:

[0023] Molybdate-containing suspensions are provided, and the molybdate-containing radicals are derived from molybdic acid, cobalt molybdate or nickel molybdate;

[0024] Under stirring conditions, irradiate the molybdate-containing suspension with an ultraviolet pulse laser to obtain a molybdate-containing solution, the wavelength of the ultraviolet pulse laser irradiation is 355nm, the pulse width is 5~17ns, and the pulse frequency is (0 ,20] Hz.

[0025] The invention provides a molybdate-containing suspension, and the molybdate-containing molybdate is molybdic acid, cobalt molybdate or nickel molybdate. In the present invention, the concentration of the molybdate-containing suspension is preferably 0.01-10 g / L, more preferably 3-4 g / L.

[0026] In the present invention, when the molybdate-containing molybdate is preferably molybdic acid, the ...

Embodiment 1

[0042] The molybdic acid (H 2 MoO 4 ) suspension (the liquid in the suspension is deionized water, 18MΩ / cm), adjust the laser parameters at 20Hz pulse frequency, 60mJ single pulse energy range, the whole irradiation process is assisted by continuous magnetic stirring, stirring speed 500rpm, Observe the color and state changes of the dispersion liquid; after 30 minutes, when the powder particles in the suspension solution completely disappear, the aqueous molybdic acid solution can be obtained.

Embodiment 2

[0044] The molybdic acid (H 2 MoO 4 ) suspension (the liquid in the suspension is ethanol), adjust the laser parameters in the 20Hz pulse frequency, 30mJ single pulse energy range, the whole irradiation process is assisted by continuous magnetic stirring, the stirring speed is 500rpm, observe the color and state of the dispersion Change; after 50 minutes, the ethanol solution of molybdic acid can be obtained after the powder particles in the suspension solution completely disappear.

Images