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Photocatalytic water splitting hydrogen production material CdS/Ba0.9Zn0.1TiO3 and preparation method thereof

A technology for photocatalysis and water splitting, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problem of fast recombination rate of photo-induced holes and photo-generated electrons, low quantum efficiency, and pollutant adsorption Poor performance and other problems, to achieve the effect of easy reuse, simple operation and good stability

Inactive Publication Date: 2015-01-07
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

However TiO 2 There are some problems as follows: 1. The recombination rate of photo-induced holes and photo-generated electrons is fast, and the quantum efficiency is low; 2. TiO 2 Poor adsorption of pollutants; 3. Wide band gap (Eg=3.2ev)

Method used

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  • Photocatalytic water splitting hydrogen production material CdS/Ba<sub>0.9</sub>Zn<sub>0.1</sub>TiO<sub>3 </sub> and preparation method thereof
  • Photocatalytic water splitting hydrogen production material CdS/Ba<sub>0.9</sub>Zn<sub>0.1</sub>TiO<sub>3 </sub> and preparation method thereof
  • Photocatalytic water splitting hydrogen production material CdS/Ba<sub>0.9</sub>Zn<sub>0.1</sub>TiO<sub>3 </sub> and preparation method thereof

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Experimental program
Comparison scheme
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Embodiment Construction

[0013] 1. Compound Ba 0.9 Zn 0.1 TiO 3 Synthesis

[0014] Dissolve 9 mmol (2.4609 g) of barium acetate and 1 mmol (0.2195 g) of zinc acetate in 10 ml of acetic acid solution with a concentration of 36% (acetic acid accounts for the volume ratio of the solution), and stir for 30 minutes to obtain solution A . Then, 10 mmol of tetra-n-butyl titanate was dissolved in 5 ml of isopropanol, and 1.5 ml of glacial acetic acid was added and stirred to obtain B solution. Slowly add solution B to solution A, and stir for 30 minutes to obtain solution C. The C solution was charged into a 25 ml polytetrafluoroethylene reaction kettle, and put into a muffle furnace at 100° C. for hydrothermal reaction for 2 hours. The obtained xerogel was ground and calcined at 900°C for 10 hours to obtain Ba 0.9 Zn 0.1 TiO 3 powder.

[0015] 2. Catalyst 10%CdS / Ba 0.9 Zn 0.1 TiO 3 Synthesis

[0016] Weigh 2 g of the prepared Ba 0.9 Zn 0.1 TiO 3 Disperse the powder in 30 ml of water, stir ev...

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Abstract

A photocatalytic water splitting hydrogen production material CdS / Ba0.9Zn0.1TiO3 is a catalyst with a heterostructure formed by enabling CdS to be loaded to Ba0.9Zn0.1TiO3 , and the catalyst is obtained by a hydrothermal sol-gel process. When the molar ratio of CdS and Ba0.9Zn0.1TiO3 is 1:5, the expression is 20%CdS / Ba0.9Zn0.1TiO3 , and the catalytic effect of the material is optimal. Under the exposure of a xenon lamp of 300 watts, Na2S / Na2SO3 serves as a sacrifice reagent. The photocatalytic water splitting hydrogen production material CdS / Ba0.9Zn0.1TiO3 has the advantages that the catalyst is directly synthesized in a hydrothermal sol-gel process and is simple in operate, low in production cost, high in synthesis yield, extremely high in purity, good in repeatability and suitable for the requirements of expanded production; the catalyst is good in stability and convenient to recycle; and the catalyst is high in photocatalysis hydrogen production efficiency.

Description

technical field [0001] The invention relates to a photocatalytic water decomposition hydrogen production material CdS / Ba 0.9 Zn 0.1 TiO 3 and its preparation method. Background technique [0002] Energy is the basis of human activities and the material premise of the development of human society. Compared with traditional fossil energy (such as coal and petroleum), hydrogen energy is a clean energy source. It can be obtained from water, and the product of complete combustion is water. It will not cause any pollution to the environment and is the cleanest energy in the world. Although the technology of using natural gas, oil, coal and other fossil energy to produce hydrogen through thermochemical method is relatively mature, it is neither economical nor environmentally friendly, and the method of electrolyzing water consumes a lot of energy. If we can use renewable energy (Such as solar energy) decomposes water to produce hydrogen, then hydrogen can be called a real "gree...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/04C01B3/04
CPCY02E60/364Y02E60/36Y02P20/584
Inventor 邹建平雷斯亮辛林花罗胜联彭刘琪朱红允于雷孙益群
Owner NANCHANG HANGKONG UNIVERSITY
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