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Catalyst for hydrolysis hydrogen production photocatalytic reaction and preparation method thereof

A photocatalytic reaction and catalyst technology, applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., can solve the problems of performance failure, agglomeration, disadvantage, etc. Effects on performance and cycle stability

Pending Publication Date: 2022-08-05
SHIHEZI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recycling conditions, this structure is unfavorable
The instability of the structure leads to the collapse and agglomeration of the structure, and even the phenomenon of lattice mismatch in the constructed heterojunction, which makes its performance invalid

Method used

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  • Catalyst for hydrolysis hydrogen production photocatalytic reaction and preparation method thereof
  • Catalyst for hydrolysis hydrogen production photocatalytic reaction and preparation method thereof
  • Catalyst for hydrolysis hydrogen production photocatalytic reaction and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] TiO 2 (B) synthesis steps are as follows:

[0054] 9 mL of ethylene glycol was transferred to an 80 mL Teflon-lined stainless steel autoclave.

[0055] Then, 0.3 mL of TiCl was added at room temperature 4 It was gradually added dropwise to the suspension until no HCl gas formed at room temperature. After that, an equal volume of deionized water was added to the mixture. The sealed autoclave was heated in an oven at 150 °C for 4 hours.

[0056] Finally, the resulting TiO 2 (B) The nanoflower product was collected by centrifugation, washed with deionized water and absolute ethanol, and dried in a vacuum oven at 60 °C for 24 h.

[0057] It was determined that TiO 2 (B) The specific surface area of ​​the nanoflower is 395.574m 2 / g, the photocatalytic hydrogen production rate was 0.482 mmol / g / h.

Embodiment 2

[0059] The molar ratio of Zn:Ti in the catalyst is 1:1, and the synthesis steps are as follows:

[0060] (1) Preparation of ZnO nanorods:

[0061] In a containing 0.05mol / L Zn(NO 3 ) 2 And 0.05mol / L urotropine mixed aqueous solution was carried out in a quartz electrolytic cell, and the quartz electrolytic cell was placed in a water bath environment of 90 ℃ for electrodeposition.

[0062] Then, the white product was collected by centrifugation, washed several times with deionized water and absolute ethanol, and dried at 60 °C overnight to obtain ZnO nanorods.

[0063] Among them, CFs, platinum plate and saturated calomel electrode (SCE) were used as working electrode, counter electrode and reference electrode, respectively; the voltage on the working electrode was negative 1.1v, and the reaction time was 2h.

[0064] Before the preparation of CFs working electrodes, CFs were separately placed in acetone, deionized water and ethanol for ultrasonic treatment.

[0065] (2) Pr...

Embodiment 3

[0071] In the catalyst, the mol ratio of Zn:Ti is 1:2, and the synthesis step is the same as in Example 2, and the difference is:

[0072] Weigh 0.6mL TiCl 4 Gradually drop into 18 ml of the ethylene glycol suspension.

[0073] It has been determined that the specific surface area of ​​nanoflowers with a Zn:Ti molar ratio of 1:2 is 352.465m 2 / g, the photocatalytic hydrogen production rate was 1.064 mmol / g / h.

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Abstract

The invention relates to a catalyst for hydrolysis hydrogen production photocatalytic reaction and a preparation method thereof. The invention relates to a preparation method of a catalyst for hydrolysis hydrogen production photocatalytic reaction, which comprises the following steps: dispersing ZnO nanorods into a solvent, adding TiCl4 and water, and carrying out hydrothermal treatment, washing and drying to obtain a ZnO-coated TiO2 (B) nanoflower catalyst, namely the catalyst. According to the catalyst for the photocatalytic reaction for hydrolysis hydrogen production and the preparation method of the catalyst, ZnO nanocrystals are embedded into TiO2 (B) crystal lattices, so that the stability of photocatalytic hydrogen production can be improved.

Description

technical field [0001] The invention belongs to the technical field of nano-composite photocatalyst materials, in particular to a catalyst for photocatalytic reaction of hydrogen production by hydrolysis and a preparation method thereof. Background technique [0002] The demand for energy in contemporary society aggravates the depletion of fossil energy and the deterioration of the living environment, which restricts the further development of the economy and society. In the field of natural science, people urgently need to develop new clean energy to solve these two problems, and have achieved certain results. For example, the use of wind, water and solar power in nature can replace traditional power generation methods such as burning coal and oil. It contributes to the sustainable development of human society, but these measures still have many shortcomings, such as high requirements on geographical location, poor continuity, and inappropriate storage of the generated ene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J23/06B01J35/00B01J35/02B01J37/10B01J37/34C01B3/04
CPCB01J23/06B01J21/063B01J37/348B01J37/10C01B3/042B01J35/50B01J35/39Y02P20/133Y02E60/36B01J35/30B01J35/615B01J37/009B01J37/0236B01J37/035B01J37/04B01J37/06B01J37/342B01J35/23
Inventor 杨盛超李琦刘志勇吴建宁孟桂花
Owner SHIHEZI UNIVERSITY
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