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Method for preparing titanium dioxide/metalloporphyrin composite nanomaterial through laser liquid phase method

A technology of composite nanomaterials and titanium dioxide is applied in the field of preparing titanium dioxide/metal porphyrin composite nanomaterials by a laser liquid phase method, which can solve the problems of low production efficiency, time-consuming, cumbersome and the like, and achieves high production efficiency, simple process and safety. high effect

Inactive Publication Date: 2017-04-26
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current traditional method for preparing titanium dioxide / metalloporphyrin composite nanomaterials is to firstly mix TiO 2 Place the metalloporphyrin in an organic solvent and reflux for a certain period of time, so that the metalloporphyrin can be physically adsorbed on TiO 2 surface, then the solvent is spin-dried, and the final sample can be dried to prepare titanium dioxide / metalloporphyrin composite nanomaterials. This preparation method is time-consuming, cumbersome, and low in production efficiency.

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Embodiment 1

[0023] Embodiment 1: a kind of laser liquid phase method prepares the method for titanium dioxide / metalloporphyrin composite nano material, comprises the following steps:

[0024] Step 1. Preparation of titanium dioxide nanomaterials: Add 0.6 mg of titanium tetrachloride to 5 ml of absolute ethanol, continue stirring for 30 min, then add 20 ml of absolute ethanol and 0.2 ml of hydrofluoric acid, stir for 40 min, and dissolve the mixture Transfer to an autoclave, place in an electric furnace and continue heating at a temperature of 180°C for 15 hours for heat treatment, then cool the autoclave naturally at room temperature, collect the product by centrifugation, and then wash with deionized water until the pH reach 7, then wash with 0.1mol / l NaOH solution to remove the fluorine on the surface, and then rinse with deionized water to restore the pH to 7.

[0025] Step 2, preparation of tetraphenyl zinc porphyrin solution: add 4mg of tetraphenyl porphyrin and 10mL of DMF into a th...

Embodiment 2

[0028] Embodiment 2: a kind of method for preparing titanium dioxide / metalloporphyrin composite nanomaterial by laser liquid phase method, comprises the following steps:

[0029] Step 1. Preparation of titanium dioxide nanomaterials: Add 0.8 mg of titanium tetrachloride to 6 ml of absolute ethanol, continue stirring for 35 min, then add 20 ml of absolute ethanol and 0.2 ml of hydrofluoric acid, stir for 30 min, and dissolve the mixture Transfer to an autoclave, place in an electric furnace and continue heating at 200°C for 16 hours for heat treatment, then cool the autoclave naturally at room temperature, collect the product by centrifugation, and then wash with deionized water until the pH reach 7, then wash with 0.1mol / l NaOH solution to remove the fluorine on the surface, and then rinse with deionized water to restore the pH to 7.

[0030] Step 2, preparation of tetraphenyl zinc porphyrin solution: add 5mg of tetraphenyl porphyrin and 12mL of DMF into a three-necked flask e...

Embodiment 3

[0033] Embodiment 3: a kind of method for preparing titanium dioxide / metalloporphyrin composite nanomaterial by laser liquid phase method, comprises the following steps:

[0034]Step 1. Preparation of titanium dioxide nanomaterials: Add 0.9 mg of titanium tetrachloride to 8 ml of absolute ethanol, continue stirring for 40 min, then add 26 ml of absolute ethanol and 0.4 ml of hydrofluoric acid, stir for 40 min, and dissolve the mixture Transfer to an autoclave, place in an electric furnace and continue heating at a temperature of 195°C for 18 hours for heat treatment, then cool the autoclave naturally at room temperature, collect the product by centrifugation, and then wash with deionized water until the pH reach 7, then wash with 0.1mol / l NaOH solution to remove the fluorine on the surface, and then rinse with deionized water to restore the pH to 7.

[0035] Step 2: Prepare tetraphenyl zinc porphyrin solution: add 6mg of tetraphenyl porphyrin and 13mL of DMF into a three-necke...

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Abstract

The invention discloses a method for preparing a titanium dioxide / metalloporphyrin composite nanomaterial through a laser liquid phase method. The method for preparing the titanium dioxide / metalloporphyrin composite nanomaterial through the laser liquid phase method comprises the steps of preparation of a titanium dioxide nanomaterial; preparation of a tetraphenyl zinc-protoporphyrin solution; laser radiation treatment; and aftertreatment of a product. The prepared titanium dioxide / metalloporphyrin composite nanomaterial is of a three-dimensional structure, the utilization rate of a titanium dioxide surface can be increased to a greater extent, the photocatalytic activity is improved, and large consumption of organic solvents is not needed; and the technique is simple, the safety is high, and the production efficiency is high.

Description

technical field [0001] The invention relates to a method for preparing nanomaterials, in particular to a method for preparing titanium dioxide / metalloporphyrin composite nanomaterials by laser liquid phase method. Background technique [0002] TiO 2 It is a wide bandgap semiconductor, its bandgap width is generally 3.0-3.4eV, and it is widely used in electroluminescence, solar cells, photocatalysis and other fields. It can only absorb ultraviolet light with a wavelength of less than 387nm, which makes the utilization rate of sunlight energy only about 4%, resulting in low light conversion efficiency and greatly restricting industrial applications. Moreover, the mutual coverage between layers in the two-dimensional titanium dioxide may reduce the photoconversion efficiency, and the preparation of three-dimensional titanium dioxide can increase the utilization rate of the titanium dioxide surface to a greater extent and increase the photocatalytic activity. [0003] When the...

Claims

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Application Information

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IPC IPC(8): B01J31/38B01J31/22B01J37/34
CPCB01J31/183B01J31/38B01J37/349B01J35/39
Inventor 彭志勤赵芬芬万军民王秉胡智文
Owner ZHEJIANG SCI-TECH UNIV
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