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Titanium dioxide/zinc oxide heterojunction material with dendritic structure and preparation method thereof

A heterojunction and dendritic technology, which is applied in the field of titanium dioxide/zinc oxide heterojunction materials and preparation, can solve the problem of non-selectivity in degradation, achieve easy mass industrial production, simple preparation process, and improve electron-hole The effect of the separation effect

Active Publication Date: 2021-07-09
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

3. Degradation is non-selective and can degrade almost any organic pollutants

Method used

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  • Titanium dioxide/zinc oxide heterojunction material with dendritic structure and preparation method thereof

Examples

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Effect test

Embodiment 1

[0027] A method for preparing a titanium dioxide / zinc oxide heterojunction material with a dendritic structure, comprising the following steps:

[0028] 1) 1 part (weight ratio) of p-methylphenethylamine, 1 part (weight ratio) of polyethylene-polypropylene glycol and 10 ml of water were mixed and stirred for 3 hours to obtain solution 1;

[0029] 2) 1 part (by weight) of zinc nitrate (Zn(NO 3 ) 2 ·6H 2 0), 0.5 parts (weight ratio) of hexamethylenetetramine ((CH 2 ) 6 N 4 ) by adding 5ml ethylenediamine (C 2 h 8 N 2 ) solution to obtain solution 2;

[0030] 3) Add solution 2 to solution 1, add 0.2 parts (by weight) of butyl orthotitanate while stirring, and stir for 3 minutes;

[0031] 4) Place the solution obtained in step 3) in an autoclave, and treat it under 140 degree hydrothermal condition for 12 hours; after centrifugation, wash the white product 3 times with ethanol and deionized water to obtain a dendritic structure titanium dioxide / ZnO heterojunction materi...

Embodiment 2

[0034] A method for preparing a titanium dioxide / zinc oxide heterojunction material with a dendritic structure, comprising the following steps:

[0035] 1) 7 parts (weight ratio) of p-methylphenethylamine, 7.4 parts (weight ratio) of polyethylene-polypropylene glycol and 40 ml of water were mixed and stirred for 5 hours to obtain solution 1;

[0036] 2) 5 parts (by weight) of zinc nitrate (Zn(NO 3 ) 2 ·6H 2 0), 7 parts (weight ratio) of hexamethylenetetramine ((CH 2 ) 6 N 4 ) by adding 15ml ethylenediamine (C 2 h 8 N 2 ) solution, ultrasonic for 30 minutes to obtain solution 2;

[0037] 3) Add solution 2 to solution 1, add 0.7 parts (by weight) of butyl orthotitanate while stirring, and stir for 10 minutes;

[0038] 4) Place the solution obtained in step 3) in an autoclave, and treat it under hydrothermal conditions of 160 degrees for 48 hours; after centrifugation, wash the white product with ethanol and deionized water 3 times to obtain a dendritic structure titaniu...

Embodiment 3

[0040] A method for preparing a titanium dioxide / zinc oxide heterojunction material with a dendritic structure, comprising the following steps:

[0041] 1) 4 parts (weight ratio) of p-methylphenethylamine, 5 parts (weight ratio) of polyethylene-polypropylene glycol and 25ml of water were mixed and stirred for 4 hours to obtain solution 1;

[0042] 2) 3 parts (by weight) of zinc nitrate (Zn(NO 3 ) 2 ·6H 2 0), 4 parts (weight ratio) of hexamethylenetetramine ((CH 2 ) 6 N 4 ) by adding 10ml ethylenediamine (C 2 h 8 N 2 ) solution, ultrasonic for 20 minutes to obtain solution 2;

[0043] 3) Add solution 2 to solution 1, add 0.5 parts (weight ratio) of butyl orthotitanate while stirring, and stir for 6 minutes;

[0044] 4) Place the solution in an autoclave and treat it for 30 hours under 150 degree hydrothermal condition;

[0045] After centrifugation, the white product was washed three times with ethanol and deionized water to obtain a titanium dioxide / zinc oxide hetero...

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Abstract

The invention discloses a titanium dioxide / zinc oxide heterojunction material with a dendritic structure and a preparation method thereof. The preparation method comprises the following steps: 1) mixing 1-7 parts by weight of p-methyl phenylethylamine, 1-7.4 parts by weight of polyethylene-polypropylene glycol and 10-40ml of water to obtain a solution 1; 2) adding 1 to 5 parts (by weight) of zinc nitrate (Zn(NO3)<2>.6 H2O) and 0.5 to 7 parts (by weight) of hexamethylenetetramine ((CH2)6N4) into 5 to 15 ml of ethylenediamine (C2H8N2) solution, so as to obtain a solution 2; 3) adding the solution 2 into the solution 1, and adding 0.2-0.7 part (weight ratio) of n-butyl titanate while stirring; (4) carrying out hydrothermal treatment on the solution obtained in the step (3) to obtain a solution containing the dendritic heterojunction material. The unique titanium dioxide / zinc oxide heterojunction material with the dendritic structure is obtained, the preparation process is relatively simple and easy to control, and large-scale industrial production is facilitated.

Description

technical field [0001] The invention relates to a titanium dioxide / zinc oxide heterojunction material with dendritic structure and a preparation method. Background technique [0002] Under the irradiation of light, semiconductor materials can convert light energy into chemical energy, and the process of promoting the synthesis of compounds or decomposing compounds (organic and inorganic) is called semiconductor photocatalysis. [0003] Titanium dioxide and zinc oxide are common semiconductor photocatalytic materials. As a photocatalytic material, it has the following advantages: 1. It converts solar energy into chemical energy and utilizes it. 2. The degradation speed is fast, and the OH generated by light-excited holes is a strong oxidizing free radical, which can successfully decompose most organic substances including refractory organic substances in a short period of time. 3. The degradation is non-selective and can degrade almost any organic pollutants. 4. It has the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/06B01J35/02
CPCB01J23/06B01J35/00B01J35/30B01J35/39
Inventor 王晟朱滢滢王騊纪律律
Owner ZHEJIANG SCI-TECH UNIV
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