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Preparation method and water photolysis hydrogen production application of covalently bonded titanium dioxide@TpPa-1 composite material

A composite material, covalent bond technology, applied in the direction of organic compound/hydride/coordination complex catalyst, hydrogen, inorganic chemistry, etc. The effect of hydrogen performance

Inactive Publication Date: 2019-09-13
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the efficiency of hydrogen production by photolysis of water in existing materials is not high, and to provide a TiO 2 Preparation method of @TpPa-1 composite material

Method used

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  • Preparation method and water photolysis hydrogen production application of covalently bonded titanium dioxide@TpPa-1 composite material
  • Preparation method and water photolysis hydrogen production application of covalently bonded titanium dioxide@TpPa-1 composite material
  • Preparation method and water photolysis hydrogen production application of covalently bonded titanium dioxide@TpPa-1 composite material

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specific Embodiment approach 1

[0025] Specific embodiment one: a kind of TiO of this embodiment 2 The preparation of the @TpPa-1 composite was done as follows:

[0026] 1. Amino modified TiO 2 (APTEs-TiO 2 ) preparation;

[0027] 2. Aldehyde titanium dioxide (CHO-TiO 2 ) preparation: the APTEs-TiO 2 Place it in dioxane, and ultrasonically treat it for 10 minutes under the condition of ultrasonic frequency of 35-45KHz. After fully mixing, add trialdehyde phloroglucinol (Tp) and acetic acid aqueous solution, and place the obtained mixed solution in heat-resistant glass tube, and vacuum stirred at 115-125°C for 6h, the product was filtered and washed three times with tetrahydrofuran, and dried to obtain CHO-TiO 2 ;

[0028] 3. TiO linked by covalent bonds 2 Preparation of @TpPa-1 composites: Tp and p-phenylenediamine were mixed with different masses of the above-synthesized CHO-TiO 2 The material is placed in a mixed solution of dioxane solution and mesitylene, and ultrasonically treated for 30 minutes...

specific Embodiment approach 2

[0036] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the CHO-TiO described in step three 2 The amount of addition is 10mg, and other steps and parameters are the same as in Embodiment 1.

specific Embodiment approach 3

[0037] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the CHO-TiO described in step three 2 The added amount is 15 mg, and other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a preparation method and a water photolysis hydrogen production application of a covalently bonded TiO2@TpPa-1 composite material. The novel composite material TiO2@TpPa-1 composite material is provided to solve the problem of low hydrogen production efficiency of existing photocatalytic hydrogen production materials. The method comprises the following steps: preparation of amino-modified TiO2; 2, preparation of aldehyde-modified TiO2; and 3, preparation of the TiO2@TpPa1 composite material. The preparation method has the advantages of simple and effective preparationprocess, small consumption of reagents, and high yield; and the photocatalyst provided by the invention can effectively solve the problem of the low water photolysis hydrogen production efficiency ofTpPa-1. The composite material is applied to the field of water photolysis hydrogen production; and experiments show that the composite material has an excellent photolysis water hydrogen production performance, and the water photolysis hydrogen production efficiency can reach 11.6 mmol.g<-1>.h<-1>.

Description

technical field [0001] The invention relates to the preparation of a covalently bonded titanium dioxide@TpPa-1 composite material and the production of hydrogen by photolysis of water. Background technique [0002] With the rapid development of social economy and science and technology, the per capita energy consumption is also increasing. Many problems also followed. First of all, current human activities mainly rely on fossil energy represented by oil, coal, and natural gas. These resources are not renewable in the short term and are facing a crisis of energy shortage. Secondly, the use of fossil energy under the current technological conditions will inevitably cause many environmental problems, such as water pollution, greenhouse effect, and air pollution. The survival and development of human beings, as well as the progress of the economy and technological society cannot be separated from the support of energy, but fossil energy is accompanied by many problems, so we a...

Claims

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Application Information

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IPC IPC(8): B01J31/16C01B3/04
CPCB01J31/1691C01B3/042C01B2203/0277B01J35/39Y02E60/36
Inventor 张凤鸣李长城孙晓君高梦遥
Owner HARBIN UNIV OF SCI & TECH
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