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Preparation method for titanium oxide with fractal structure

A fractal structure and titanium oxide technology, which is applied in chemical instruments and methods, catalyst activation/preparation, chemical/physical processes, etc., can solve the problems of chemical reagent environmental pollution, energy waste, and complicated treatment process, and achieve environmental friendliness and low cost. The effect of low cost and simple process operation

Active Publication Date: 2019-05-03
GUANGDONG ROI OPTOELECTRONICS TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, traditional molecular sieve-supported titanium dioxide requires multi-step treatment, including: hydrolysis of titanium-containing precursors, adjustment of precursor pH, high-temperature treatment and crystallization, etc., which leads to complex treatment processes, environmental pollution caused by too many chemical reagents, and energy waste. , such as Chinese patents CN 105381820 A, CN 105854926 A

Method used

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  • Preparation method for titanium oxide with fractal structure
  • Preparation method for titanium oxide with fractal structure
  • Preparation method for titanium oxide with fractal structure

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The molecular sieve with a silicon-aluminum ratio of 30 was used as a raw material to prepare a fractal structure titania photocatalyst.

[0030] Add 10 ml of tetrabutyl titanate into 50 ml of absolute ethanol, and stir evenly to obtain a titanium ion solution. Drop 2 mL of 0.1 mol / L nitric acid solution into 50 mL of deionized water, and stir thoroughly to obtain an electrolyte. Fully mix 10 g of molecular sieves with a silicon-aluminum ratio of 30, an electrolyte solution, and a titanium ion solution to obtain a precursor liquid. Drop 7 mL of 0.1 mol / L nitric acid solution into 60 mL of deionized water, and stir well to obtain a buffer solution.

[0031] Such as figure 2 As shown, two rod-shaped titanium cathodes are symmetrically placed on both sides of the platinum sheet anode to assemble a parallel discharge system. The two rod-shaped titanium cathodes used are both 4 mm in diameter and 20 cm in length. The two rod-shaped cathodes are inserted into the corundum...

Embodiment 2

[0036] The molecular sieve with a silicon-aluminum ratio of 60 was used as a raw material to prepare a fractal structure titania photocatalyst.

[0037] Add 10 ml of tetrabutyl titanate into 50 ml of absolute ethanol, and stir evenly to obtain a titanium ion solution. Drop 2 mL of 0.1 mol / L nitric acid solution into 50 mL of deionized water, and stir thoroughly to obtain an electrolyte. Fully mix 10 g of molecular sieves with a silicon-aluminum ratio of 60, an electrolyte solution, and a titanium ion solution to obtain a precursor liquid. Drop 7 mL of 0.1 mol / L nitric acid solution into 60 mL of deionized water, and stir well to obtain a buffer solution.

[0038] Such as figure 2 As shown, two rod-shaped titanium cathodes are symmetrically placed on both sides of the platinum sheet anode to assemble a parallel discharge system. The two rod-shaped titanium cathodes used are both 4 mm in diameter and 20 cm in length. The two rod-shaped cathodes are both inserted into the cor...

Embodiment 3

[0043] The molecular sieve with a silicon-aluminum ratio of 300 was used as a raw material to prepare a fractal structure titania photocatalyst.

[0044] Add 10 ml of tetrabutyl titanate into 50 ml of absolute ethanol, and stir evenly to obtain a titanium ion solution. Drop 2 mL of 0.1 mol / L nitric acid solution into 50 mL of deionized water, and stir thoroughly to obtain an electrolyte. Fully mix 10 g of molecular sieves with a silicon-aluminum ratio of 300, an electrolyte solution, and a titanium ion solution to obtain a precursor liquid. Drop 7 mL of 0.1 mol / L nitric acid solution into 60 mL of deionized water, and stir well to obtain a buffer solution.

[0045] Such as figure 2 As shown, two rod-shaped titanium cathodes are symmetrically placed on both sides of the platinum sheet anode to assemble a parallel discharge system. The two rod-shaped titanium cathodes used are both 4 mm in diameter and 20 cm in length. The two rod-shaped cathodes are both inserted into the c...

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Abstract

The invention relates to the technical field of photocatalytic material synthesis, and in particular relates to a preparation method for titanium oxide with a fractal structure. The method uses a mixed solution of a titanium source solution, an electrolyte solution and a molecular sieve as a precursor liquid to obtain a titanium source coated molecular sieve, strongly-reductive cathode glow discharge plasma is generated in the precursor liquid, the plasma reduction treatment and a titanium source hydrolysis reaction have a synergistic effect to gradually convert a titanium source on the surface of the molecular sieve into reducing titanium oxide, and finally the reducing titanium oxide coated molecular sieve composite material is obtained, that is, the titanium oxide with the fractal structure is obtained. According to the preparation method provided by the invention, the titanium oxide with the fractal structure prepared by the method has the characteristics of a large specific surface area of the molecular sieve and strong visible light response of the reducing titanium oxide.

Description

technical field [0001] The invention relates to the technical field of synthesis of photocatalytic materials, in particular to a method for preparing titanium oxide with a fractal structure. Background technique [0002] Titanium dioxide (TiO 2 ), as the most common semiconductor catalyst, is widely used in air purification, sewage treatment and other fields because of its low price, non-toxicity, stable chemical properties and other characteristics. The principle of titanium dioxide environmental purification, that is, photocatalytic reaction, is that titanium dioxide absorbs organic substances in the environment, such as dyes, formaldehyde, etc., and under light conditions, it generates photogenerated electron-hole pairs by itself, and induces the production of highly active substances, such as superoxide radicals, Hydroxyl radicals. These highly active substances undergo a redox reaction with the organic matter adsorbed by titanium oxide, and the product is CO 2 、H 2 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J35/04B01J35/10B01J37/34
Inventor 曾和平冯光
Owner GUANGDONG ROI OPTOELECTRONICS TECH CO LTD
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