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A kind of titanate nano sheet photocatalytic film material and its preparation method and application

A technology of photocatalytic film and nanosheet, applied in the direction of chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., to achieve the effects of controllable thickness, good application prospects, and simple preparation process

Inactive Publication Date: 2017-01-25
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no relevant report on enhancing the activity of photocatalytic degradation of organic pollutants through transparent, flexible, unsupported photocatalytic membranes assisted by hydrogen peroxide.

Method used

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  • A kind of titanate nano sheet photocatalytic film material and its preparation method and application
  • A kind of titanate nano sheet photocatalytic film material and its preparation method and application
  • A kind of titanate nano sheet photocatalytic film material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 3.22g of anhydrous potassium carbonate (commercially available), 0.55g of anhydrous lithium carbonate (commercially available), and 7.68g of titanium oxide (commercially available) and mix and grind for 1 hour, then calcinate at 1000°C for 20 hours to obtain a 10g alkali metal layer Titanate K 0.8 Ti 1.73 Li 0.27 o 4 ;

[0028] Weigh 2.3g of the above-mentioned alkali metal layered titanate K 0.8 Ti 1.73 Li 0.27 o 4 , impregnated in 200mL with a concentration of 1mol L -1 Hydrochloric acid aqueous solution, replace the aqueous hydrochloric acid solution once a day, filter and wash after three days, and obtain 2 g of layered protonated titanate H after drying at 25 ° C 1.07 Ti 1.73 o 4 ·H 2 O;

[0029] Weigh 1 g of the above layered protonated titanate H 1.07 Ti 1.73 o 4 ·H 2 O, immersed in 250 mL of water, adding 0.6 mL of commercially available ethylamine aqueous solution containing 0.408 g of ethylamine, and mechanically shaking for 24 hours to o...

Embodiment 2

[0031] (1) The sol containing 40mg of titanate nanosheets prepared in Example 1 is added to a filter equipped with a microporous membrane (5 cm in diameter, and the pore size of the microporous membrane is 0.45 micron);

[0032] (2) Under reduced pressure, the titanate nanosheets are suction-filtered to form a titanate nanosheet film;

[0033] (3) Soak the titanate nanosheet membrane obtained in step (2) with 0.1mol / L hydrochloric acid aqueous solution, wash with deionized water, dry at room temperature 25°C for 24 hours, and finally remove it from the microporous membrane to obtain a transparent , flexible, unsupported photocatalytic film, that is, titanate nanosheet photocatalytic film material.

[0034] Such as figure 1 Shown is the titanate nanosheet photocatalytic film material prepared in Example 2, which is a transparent, flexible, unsupported photocatalytic film.

Embodiment 3

[0036] (1) Add the sol containing 40mg titanate nanosheets prepared in Example 1 into a petri dish (5 cm in diameter);

[0037] (2) Carry out solvent evaporation at room temperature 25 ℃, form titanate nanosheet film;

[0038](3) Soak the titanate nanosheet film obtained in step (2) with 0.1mol / L hydrochloric acid aqueous solution, wash with deionized water, dry at room temperature 25°C for 24 hours, and finally peel off from the petri dish to obtain a transparent, The flexible, unsupported photocatalytic membrane is a titanate nanosheet photocatalytic membrane material.

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Abstract

The present invention discloses a highly active photocatalyst titanate nanosheet film material and its preparation method and application, the method comprising: 1) a titanium-containing acid sol was added to the nano-sheets with micro dish or filter pores in the filter, the solvent was evaporated in Petri dishes or on titanate nanosheet was filtered by suction under reduced pressure in a filter, formed titanate nanosheet film; 2) the resulting titanate salts with an acidic solution nano-sheet membrane soaked, washed with water, and dried to obtain nanosheet titanate photocatalyst film material. Titanate nanosheets obtained photocatalyst film material is non-transparent support, a flexible film photocatalyst. Titanate nanosheet photocatalyst film material prepared in the present invention is a non-transparent support, a flexible film photocatalyst, with the aid of hydrogen peroxide, having a very high activity photocatalytic degradation of organic pollutants, the preparation method is simple, easy to promotion, cheap raw materials, easy to get, is conducive to mass production.

Description

technical field [0001] The invention relates to the field of photocatalyst preparation and photocatalytic environmental treatment, in particular to a transparent, flexible and unsupported titanate nanosheet photocatalytic film material with extremely high activity assisted by hydrogen peroxide. Background technique [0002] The high development of society and industrialization has made environmental pollution, especially water pollution, one of the problems that seriously hinder the development of human society. How to effectively treat industrial and domestic sewage is of great significance to the sustainable development of human society. As a new and promising environmental pollution treatment technology, semiconductor photocatalysis has the characteristics of green and pollution-free, low energy consumption, less land occupation, high efficiency and wide application range. [0003] Among numerous photocatalytic materials, titanium oxide has been widely studied due to its...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/06B01J35/02C02F1/30C02F1/72C02F101/30B01J35/00
CPCY02W10/37
Inventor 董晓平陈沁沁罗俊杰
Owner ZHEJIANG SCI-TECH UNIV
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