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Application of bismuth phosphate compound serving as catalyst for photochemical water splitting hydrogen production

A technology of photolysis of water to produce hydrogen and compounds, applied in the field of catalysis, can solve the problems of increasing catalyst cost, difficult batch controllable preparation of catalysts, etc., and achieve the effect of excellent hydrogen production rate

Inactive Publication Date: 2014-02-19
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, due to the limitation of preparation technology, it is difficult to prepare a variety of semiconductor catalysts in a batch-controlled manner, and this type of catalyst needs to support noble metal co-catalysts in order to show a high hydrogen production rate, which greatly increases the cost of the catalyst.

Method used

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  • Application of bismuth phosphate compound serving as catalyst for photochemical water splitting hydrogen production
  • Application of bismuth phosphate compound serving as catalyst for photochemical water splitting hydrogen production

Examples

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Effect test

Embodiment 1

[0013] Using bismuth chloride, sodium phosphate, and ethanol as starting materials, weigh 100mmol of bismuth chloride and 100mmol of sodium phosphate, and dissolve the two in 1000mL of ethanol; stir for 12 hours to fully react, and then separate the reacted solution A precipitate was obtained; the obtained precipitate was washed 10 times with deionization, and dried at 60° C. for 4 hours to obtain the final product.

[0014] The bismuth phosphate compound can be used as a catalyst for hydrogen production by photolysis of water. According to the above test conditions for hydrogen production by photolysis of water, the obtained performance curve of hydrogen production by photolysis of water is as follows figure 1 shown. It can be seen from the figure that the hydrogen production rate is 10.8 μmol h -1 .

Embodiment 2

[0016] Using bismuth nitrate, ammonium dihydrogen phosphate, and ethylene glycol as starting materials, weigh 100mmol of bismuth nitrate and 100mmol of ammonium dihydrogen phosphate, and dissolve the two in 100mL of ethylene glycol; stir for 12 hours to fully react, Then the reacted solution was separated to obtain a precipitate; the obtained precipitate was washed 10 times with deionization, and dried at 60° C. for 4 hours to obtain a final product.

[0017] The bismuth phosphate compound can be used as a catalyst for hydrogen production by photolysis of water. According to the above test conditions for hydrogen production by photolysis of water, the obtained performance curve of hydrogen production by photolysis of water is as follows figure 2 shown. It can be seen from the figure that the hydrogen production rate is 11.3 μmol h -1 .

Embodiment 3

[0019] Taking bismuth nitrate, potassium phosphate, and ethylene glycol methyl ether as starting materials, weigh 100mmol of bismuth nitrate and 100mmol of potassium phosphate, and dissolve the two in 1000mL of ethylene glycol methyl ether; stir for 12 hours to make it fully react, and then The reacted solution was separated to obtain a precipitate; the obtained precipitate was washed 10 times with deionization, and dried at 60° C. for 4 hours to obtain the final product.

[0020] The bismuth phosphate compound can be used as a catalyst for hydrogen production by photolysis of water. According to the above test conditions of hydrogen production by photolysis of water, the performance curve of hydrogen production by photolysis of water was obtained. Analysis showed a hydrogen production rate of 9.6 μmol h -1 .

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Abstract

The invention relates to the catalytic field of application of a bismuth phosphate compound serving as a catalyst for photochemical water splitting hydrogen production. The bismuth phosphate compound serves as the catalyst for photochemical water splitting hydrogen production, and is characterized in that during the process of photochemical water splitting hydrogen production, ultraviolet light is used. Due to the application of the bismuth phosphate compound serving as the catalyst for photochemical water splitting hydrogen production, the hydrogen production rate is higher that of P25 commercial titanium dioxide.

Description

technical field [0001] The invention relates to the application of a bismuth phosphate compound in the field of catalysis as a catalyst for hydrogen production by photolysis of water. Background technique [0002] The limitation of the existing hydrogen production efficiency by photo-splitting of water is that the catalytic efficiency of photo-splitting water catalysts is low. Most current catalysts, such as TiO 2 , ZnS, CdS and other traditional semiconductor materials have narrow photoresponse range and low catalytic activity, and their catalytic ability under ultraviolet light conditions cannot meet the growing practical needs of people. The development of new photocatalytic materials for hydrogen production from water splitting is still at the door. On the other hand, due to the limitation of preparation technology, it is difficult to prepare a variety of semiconductor catalysts in a batch-controlled manner, and this type of catalyst needs to support noble metal co-cat...

Claims

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Application Information

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IPC IPC(8): B01J27/186C01B3/04
CPCY02E60/364Y02E60/36
Inventor 李广社赵明磊李莉萍
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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