Silver/titanium oxide-zirconium phosphate intercalated composite material and its preparation method and use

A composite material, zirconium phosphate technology, applied in chemical instruments and methods, botanical equipment and methods, nanotechnology for materials and surface science, etc., can solve the problem of low utilization rate of raw materials, incomplete ion exchange, and long exchange time and other problems, to achieve the effect of short exchange time, simple and controllable preparation method, and high utilization rate of raw materials

Inactive Publication Date: 2018-05-29
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects of long exchange time, incomplete ion exchange and low raw material utilization rate in the preparation of layered zirconium phosphate-loaded silver in the prior art, the object of the present invention is to provide a silver / titanium oxide-zirconium phosphate intercalation composite material preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Preparation method of silver / titanium oxide-zirconium phosphate intercalation composite material:

[0021] (1) Weigh zirconium oxychloride to make a solution, and add HCl to adjust the pH to less than 2. Take concentrated phosphoric acid and dissolve it in deionized water to form a phosphoric acid solution, wherein the concentrations of zirconium oxychloride and phosphoric acid are the same, both being 0.5 mol / L; the molar ratio of phosphoric acid to zirconium oxychloride is 3:2, slowly The aqueous solution of zirconium oxychloride was added dropwise to the phosphoric acid solution, and kept stirring at 200 rpm for 4 hours. The resulting suspension was suction filtered, washed, dried and ground to obtain lamellar zirconium phosphate.

[0022] (2) Add the obtained layered zirconium phosphate and tetrabutyl titanate to the ethanol solution, wherein the quality of tetrabutyl titanate is 10% of the layered zirconium phosphate, and install it in a stainless steel reactor of...

Embodiment 2

[0025] (1) Weigh a certain amount of zirconium oxychloride to make a solution, and add HCl to adjust the pH to less than 2. Weigh a certain mass of concentrated phosphoric acid and dissolve it in deionized water to form a phosphoric acid solution, in which the concentrations of zirconium oxychloride and phosphoric acid are the same, both being 1 mol / L. According to the molar ratio of phosphoric acid to zirconium oxychloride being 3:1, the aqueous solution of zirconium oxychloride was slowly added dropwise to the phosphoric acid solution, and kept stirring at 600 rpm for 12 hours. The resulting suspension was suction filtered, washed, dried and ground to obtain lamellar zirconium phosphate.

[0026] (2) Add the obtained layered zirconium phosphate and tetrabutyl titanate to the ethanol solution, wherein the quality of tetrabutyl titanate is 5% of the layered zirconium phosphate, and install it in a stainless steel reactor of supercritical equipment, and adjust the temperature t...

Embodiment 3

[0029] (1) Weigh a certain amount of zirconium oxychloride to make a solution, and add HCl to adjust the pH to less than 2; weigh a certain mass of concentrated phosphoric acid and dissolve it in deionized water to make a phosphoric acid solution, in which the concentration of zirconium oxychloride and phosphoric acid The same, both are 2 mol / L; the molar ratio of phosphoric acid to zirconium oxychloride is 2:1, slowly add the aqueous solution of zirconium oxychloride to the phosphoric acid solution, keep stirring at 800 rpm for 8 hours; Liquid suction filtration, washing, drying and grinding to obtain lamellar zirconium phosphate.

[0030] (2) Add the obtained layered zirconium phosphate and tetrabutyl titanate to the ethanol solution, wherein the quality of tetrabutyl titanate is 15% of the layered zirconium phosphate, and install it in a stainless steel reactor of supercritical equipment, and adjust the temperature to 40°C, pressure 9 MPa, using supercritical CO 2 Tetrabut...

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PUM

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Abstract

The invention provides a silver / titanium oxide-zirconium phosphate intercalated composite material and its preparation method and use. The preparation method utilizes zirconium oxychloride, phosphoricacid, tetrabutyl titanate and silver nitrate as raw materials and comprises feeding tetrabutyl titanate to a position between layers of zirconium phosphate through a supercritical method under control of a temperature, pressure and reaction time, carrying out complete hydrolysis to obtain a titanium hydroxide-zirconium phosphate intercalated composite material containing titanium hydroxide dispersed and supported between layers of zirconium phosphate, loading silver through an ion exchange method and carrying out calcination to obtain the silver / titanium oxide-zirconium phosphate intercalatedcomposite material. The preparation method is simple and controllable, fully utilizes supercritical CO2 fluid solubility to enlarge the layer distance and improves the dispersibility and the load rate of the titanium oxide and silver on the zirconium phosphate carrier. The preparation method is efficient and rapid. The silver / titanium oxide-zirconium phosphate intercalated composite material canbe used in the fields of antibiosis and catalysis.

Description

technical field [0001] The invention relates to the field of preparation of inorganic nanometer materials, in particular to a preparation method of a silver / titanium oxide-zirconium phosphate intercalation composite material and its product and application. Background technique [0002] Supercritical CO 2 It refers to the fluid whose temperature and pressure are above the critical point. In this case, CO 2 It has a density close to that of a liquid, a viscosity close to that of a gas, a self-diffusion coefficient nearly 100 times larger than that of a liquid, and a surface tension close to zero. With the change of temperature and pressure, its density changes significantly, so that the solute in supercritical CO 2 The solubility changed significantly. This technique has been widely used in the preparation of nanomaterials. [0003] Silver-based bactericidal disinfectants and titanium oxide are widely used in antibacterial aspects, but if used alone, they cannot achieve a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01N59/26A01P1/00A01P3/00B01J27/18B82Y30/00B82Y40/00
CPCA01N59/16A01N59/26B01J27/1817B82Y30/00B82Y40/00
Inventor 何丹农章龙王岩岩林琳金彩虹
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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