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Coating agent of photocatalysis with needle shape Tio2 anatase crystal grain and it preparation process

A photocatalyst and anatase technology, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of inconvenient heat treatment rooms and facilities, and achieve the effect of cost reduction

Inactive Publication Date: 2008-06-25
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the inadequacies of living rooms and facilities that are not convenient for heat treatment in the prior art, a needle-shaped TiO-containing compound with low preparation cost and simple application process is provided. 2 Photocatalytic coating agent for anatase crystal grains and preparation method thereof

Method used

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  • Coating agent of photocatalysis with needle shape Tio2 anatase crystal grain and it preparation process
  • Coating agent of photocatalysis with needle shape Tio2 anatase crystal grain and it preparation process

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Weigh 34.6g (containing 0.1mol of Ti 4+ )TiOSO 4 ·nH 2 O, add 200ml of deionized aqueous solution, let it stand for 8h until the raw material is completely dissolved, carry out suction filtration to remove impurities and become a clear solution. Take a 500ml beaker, add 200ml deionized water to adjust the pH to 8, and make TiOSO 4 Titrate the clarified solution and 3mol / L ammonia water together in a beaker, stir continuously to mix the reactants evenly, keep the pH of the reaction solution at about 8 during the reaction, and age the white precipitate obtained after the titration for 30min with stirring. Then the solid-liquid was separated, and the obtained white precipitate was washed with deionized water to remove NH by suction filtration under reduced pressure. 4 + and SO 4 2- , and repeat the wash 3 times. Dilute the precipitate after washing and suction filtration to 0.05mol / L to become a white precipitate suspension; choose 30% H 2 o 2 The solution is used...

Embodiment 2

[0020] Weigh 34.6g (containing 0.1mol of Ti 4+ )TiOSO 4 ·nH 2 O, add 200ml of deionized aqueous solution, let it stand for 8h until the raw material is completely dissolved, carry out suction filtration to remove impurities and become a clear solution. Take a 500ml beaker, add 200ml deionized water to adjust the pH to 9, and TiOSO 4 Titrate the clarified solution and 3mol / L ammonia water together in a beaker, stir continuously to mix the reactants evenly, keep the pH of the reaction solution at about 9 during the reaction, and age the white precipitate obtained after the titration for 40min with stirring. Then the solid-liquid was separated, and the obtained white precipitate was washed with deionized water to remove NH by suction filtration under reduced pressure. 4 + and SO 4 2- , and repeat the wash 4 times. Dilute the precipitate after washing and suction filtration to 0.1mol / L to become a white precipitate suspension; choose 30% H 2 o 2 The solution is used as pe...

Embodiment 3

[0022] Weigh 34.6g (containing 0.1mol of Ti 4+ )TiOSO 4 ·nH 2 O, add 200ml of deionized aqueous solution, let it stand for 8h until the raw material is completely dissolved, carry out suction filtration to remove impurities and become a clear solution. Take a 500ml beaker, add 200ml deionized water to adjust the pH to 8, and make TiOSO 4 Titrate the clarified solution and 3mol / L ammonia water together in a beaker, stir continuously to mix the reactants evenly, keep the pH of the reaction solution at about 8 during the reaction, and age the white precipitate obtained after the titration for 30min with stirring. Then the solid-liquid was separated, and the obtained white precipitate was washed with deionized water to remove NH by suction filtration under reduced pressure. 4 + and SO 4 2- , and repeat the wash 4 times. Dilute the precipitate after washing and suction filtration to 0.2mol / L to become a white precipitate suspension; choose 30% H 2 o 2 The solution is used ...

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Abstract

A photo-catalytic coating agent features that a titanium oxide-series photo-catalyst contains the anatase-phase TiO2 crystal grains. After the prepared film or coated layer is dried, it has high adhesion and visual light catalyzing activity. Its preparing process is also disclosed.

Description

technical field [0001] The invention relates to a method of photocatalytic coating agent (AS), in particular to a method containing acicular TiO 2 A photocatalytic coating agent for anatase crystal grains and a preparation method thereof. Background technique [0002] The commonly used supported titanium oxide photocatalysts are usually loaded onto the substrate by powder bonding or sol-gel technology; the latter uses expensive alkoxides and general inorganic salts, which contain a large amount of organic solvents or complexing agent, and the acidity of the sol is strong, and the metal substrate is limited; the prepared adhesive coating and sol film need a higher heat treatment temperature, the thermal decomposition of organic matter pollutes the environment, and increases the cost of raw materials. more complicated. The currently used titanium oxide photocatalyst itself does not have anatase phase TiO 2 Grains, which require heat treatment to have photocatalytic activity...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/06B01J37/02
Inventor 徐明霞戈磊田玉明方海波
Owner TIANJIN UNIV
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