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Preparation method for oxidized vanadium-titanium dioxide sol, and application method thereof

A technology of titanium dioxide and a manufacturing method, which is applied in the field of photocatalyst sol manufacturing, can solve problems such as inconvenient use of photocatalyst sol, and achieve the effects of prolonging recombination time and strong corrosion resistance

Inactive Publication Date: 2015-08-19
MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above types of photocatalyst sol are inconvenient to use

Method used

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  • Preparation method for oxidized vanadium-titanium dioxide sol, and application method thereof
  • Preparation method for oxidized vanadium-titanium dioxide sol, and application method thereof
  • Preparation method for oxidized vanadium-titanium dioxide sol, and application method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] In an ice bath at 0°C, slowly drop titanium tetrachloride aqueous solution into hydrochloric acid aqueous solution to make a 5 molar concentration (5M), then slowly add 30% ammonia solution to the aforementioned solution, and keep stirring until The pH value of the solution is 8.5. After repeated washings, until the concentration of chlorine is lower than 10ppm, it is filtered to obtain a filter cake, which is naturally dried at room temperature. In order to control the solid content of titanium dioxide in the solution at 1%, take Add a certain amount of filter cake to distilled water, and add ammonium metavanadate and hydrogen peroxide, the weight ratio of titanium dioxide is 1 to 100, and the weight ratio of ammonium metavanadate to titanium dioxide is 0.5 to 100. In the type bottle, connect the condenser tube, heat and cook at 95°C for 12 hours to obtain nano-sized titanium dioxide sol.

Embodiment 2

[0026] Same as Example 1, except that the weight ratio of ammonium metavanadate to titanium dioxide is 2:100.

Embodiment 3

[0028] Same as Example 1, except that the weight ratio of ammonium metavanadate to titanium dioxide is 0.5 to 100.

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Abstract

The present invention discloses a preparation method for oxidized vanadium-titanium dioxide sol, and an application method thereof. The preparation method for oxidized vanadium-titanium dioxide sol comprises the steps of (a) agitating the titanium tetrachloride aqueous solution and the aqueous hydrochloric acid solution in an ice bath to form a solution A; (b) adding the aqueous ammonia solution in the solution A to form a titanium hydroxide colloid; (c) adding ammonium metavanadate and hydrogen peroxide (H2O2) into the aqueous solution containing the above titanium oxide colloid to form an aqueous solution B; and (d) heating the aqueous solution b in a water insulation manner for a period of time till the titanium hydroxide colloid is completely hydrolyzed to disappear. In this way, a stable suspended oxidized vanadium-titanium dioxide sol is formed. The invention also provides an application method for oxidized vanadium-titanium dioxide sol, wherein the oxidized vanadium-titanium dioxide sol prepared through the above process is coated onto a carrier in the spraying or dipping manner.

Description

technical field [0001] The invention relates to a method for manufacturing a photocatalyst sol, in particular to a method for manufacturing a vanadium oxide-titania sol. Background technique [0002] In order to make titanium dioxide thin films, several main preparation methods have been developed in recent years. For substrates with large surface area, chemical vapor deposition is usually used to make thin films. The principle uses chemical reactions to generate solid species from gaseous reactants in the reaction area and further deposits them on the surface of the carrier. Substrate adsorption If the force is strong, high-temperature equipment is necessary, and the process is complicated. [0003] China Taiwan Patent Application No. 92122034 discloses the synthetic method of preparing crystalline titanium dioxide photocatalyst, and it is to utilize titanium tetrachloride or titanium sulfate to adjust pH value with ammoniacal liquor and add suitable oxidizing agent and in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/22C03C17/23C04B41/85
Inventor 陈郁文张智盈
Owner MATERIAL TECH
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