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Preparation of alpha-Fe2O3/TpPa-2 composite and application of alpha-Fe2O3/TpPa-2 composite in water photolysis for hydrogen production

A composite material, tppa-2 technology, applied in the direction of organic compound/hydride/coordination complex catalyst, hydrogen/synthesis gas production, hydrogen, etc., can solve the problem of low efficiency of hydrogen production by photolysis of water, and improve the efficiency of light The effect of water splitting hydrogen production performance

Active Publication Date: 2019-08-09
HARBIN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing material photolysis water hydrogen production efficiency is not high, and provide a kind of α-Fe 2 o 3 The preparation method of / TpPa-2 composite material

Method used

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  • Preparation of alpha-Fe2O3/TpPa-2 composite and application of alpha-Fe2O3/TpPa-2 composite in water photolysis for hydrogen production
  • Preparation of alpha-Fe2O3/TpPa-2 composite and application of alpha-Fe2O3/TpPa-2 composite in water photolysis for hydrogen production
  • Preparation of alpha-Fe2O3/TpPa-2 composite and application of alpha-Fe2O3/TpPa-2 composite in water photolysis for hydrogen production

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Experimental program
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Effect test

Embodiment 1

[0021] Example 1: A kind of α-Fe of this embodiment 2 o 3 The preparation of / TpPa-2 material is accomplished in the following steps:

[0022] Step 1, α-Fe 2 o 3 preparation of

[0023] Step 2, α-Fe 2 o 3 / TpPa-2 composite material preparation: α-Fe 2 o 3 (3.8mg), 1,3,5-trialdehyde phloroglucinol (0.021g) and 2,5-dimethyl-p-phenylenediamine (0.020g) were added into a heat-resistant glass tube, followed by 1,3, 5-trimethylbenzene (1.5mL), 1,4-dioxane (1.5mL) and acetic acid (0.5mL, 3mol·L -1 ) mixed solution, ultrasonically treated for 30min at an ultrasonic frequency of 40KHz, degassed by three freeze-thaw cycles in a liquid nitrogen bath, sealed and heated at 120°C for 72h, filtered and washed several times with tetrahydrofuran, and dried to obtain α -Fe 2 o 3 / TpPa-2 (mass ratio 1:9) composite material;

Embodiment 2

[0024] Example 2: The difference between this embodiment and Example 1 is that the α-Fe described in step 2 2 o 3 The quality of is 8.5mg, and other steps and parameter are identical with embodiment 1. get α-Fe 2 o 3 / TpPa-2 (mass ratio is 2:8) composite material;

Embodiment 3

[0025] Example 3: The difference between this embodiment and Example 1 or 2 is: the α-Fe described in step 2 2 o 3 The quality of is 14.6mg, and other steps and parameter are identical with embodiment 1 or 2. get α-Fe 2 o 3 / TpPa-2 (mass ratio is 3:7) composite material;

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Abstract

The invention relates to preparation of an alpha-Fe2O3 / TpPa-2 heterojunction catalyst and application of the alpha-Fe2O3 / TpPa-2 heterojunction catalyst in water photolysis for hydrogen production. Theproblem that an existing TpPa-2 material for water photolysis for hydrogen production does not have high hydrogen producing efficiency is solved. A preparation method of the catalyst comprises the steps of 1, preparation of alpha-Fe2O3, and 2, preparation of an alpha-Fe2O3 / TpPa-2 composite. The preparing process is simple and effective, few reagents are consumed, and the yield is high; moreover,the photocatalyst can effectively solve the problem that the efficiency of TpPa-2 in water photolysis for hydrogen production is low. The preparation of the alpha-Fe2O3 / TpPa-2 heterojunction catalystis applied to the field of photocatalysis water photolysis for hydrogen production, as is shown through experiments, the composite has excellent performance of catalysis in water photolysis for hydrogen production, and the speed of decomposing H2O and producing hydrogen under the irradiation of a 300-W xenon lamp can reach 3.77 mmol.h<-1>.g<-1>.

Description

technical field [0001] The present invention relates to a kind of α-Fe 2 o 3 Preparation of / TpPa-2 composite material and hydrogen production by photolysis of water. Background technique [0002] As people pay more and more attention to the global issues of energy crisis and environmental pollution, finding sustainable and clean energy alternatives to fossil fuels has become one of the most significant challenges facing human society. In this context, people are gradually turning their attention to clean renewable energy, and hydrogen energy is considered the most suitable substitute because of its cleanliness and high calorific value. Among the many ways to produce hydrogen, obtaining hydrogen by photocatalytic water splitting technology is considered to be one of the green and sustainable ways to achieve this energy conversion. In 1972, Japanese scholars Fujishima and Honda found that when the light n-type semiconductor TiO 2 Electrodes can cause water decomposition. ...

Claims

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Application Information

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IPC IPC(8): B01J31/28C01B3/04
CPCB01J31/28C01B3/042C01B2203/0277B01J35/39Y02E60/36
Inventor 孙晓君张养鹏张凤鸣董鸿
Owner HARBIN UNIV OF SCI & TECH
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