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Hydrogen material from photocatalytic water decomposition and preparation method thereof

A water splitting and photocatalytic technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of fossil energy depletion and limited content, and achieve repeatable Good performance, simple operation, good photocatalytic water splitting hydrogen production effect

Inactive Publication Date: 2011-11-23
NANCHANG HANGKONG UNIVERSITY
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  • Abstract
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Problems solved by technology

However, the content of these fossil energy sources on the earth is limited, not inexhaustible. People's excessive exploitation of energy sources has caused fossil energy sources to face depletion.

Method used

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  • Hydrogen material from photocatalytic water decomposition and preparation method thereof
  • Hydrogen material from photocatalytic water decomposition and preparation method thereof
  • Hydrogen material from photocatalytic water decomposition and preparation method thereof

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Embodiment Construction

[0011] The material of the present invention Sr 2 / 3 Zn 1 / 3 TiO 3 Synthesis:

[0012] Dissolve 0.01 mol of strontium nitrate, 0.01 mol of zinc nitrate and 0.04 mol of citric acid in 100 ml of deionized water, then add a mixed solution of n-tetrabutyl titanate (5 ml) and ethylene glycol (10 ml) to the In the above aqueous solution, stir at a constant temperature of 50°C for 30 minutes, then heat to 80°C and stir at a constant temperature for about 2 hours to form a sol, dry the obtained sol at 100°C, and then calcinate the dried sol at 600~1000°C for 10 hour, the white powder obtained will be soaked in 36% acetic acid for 24 hours, and finally the target compound Sr 2 / 3 Zn 1 / 3 TiO 3 . The powder diffractometer and elemental analysis tests showed that the compound was the target product Sr 2 / 3 Zn 1 / 3 TiO 3 .

[0013] Such as figure 1 , figure 2 Shown, show through analysis, compound of the present invention is a kind of material with perovskite structure, and its ch...

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Abstract

The invention relates to a hydrogen material from photocatalytic water decomposition. The target compound is a perovskite structured material with a chemical formula of Sr2 / 3Zn1 / 3TiO3. Belonging to the cubic system, the compound has a space group of Pm-3m and the unit cell parameters of a=3.90-3.95??, b=3.90-3.95??, c=3.90-3.95??, a=89-91??, b=89-91??, g=89-91??, and Z=1. Induced by the ultraviolet light with a wavelength of 150-300 nanometers, and with ethanol as the sacrifice agent, the material of the invention can have high photocatalysis efficiency, and can reach a hydrogen production rate of 73.2??mol*h<-1>*g<-1> without a precious metal cocaralyst. The material of the invention has the advantages of: 1. simple sol-gel preparation method, low production cost, high synthetic yield, high purity and good repeatability, thus satisfying the requirements of expanded production; 2. good thermostability, strong acid and alkali resistance; 3. and good effect of hydrogen production from photocatalytic water decomposition.

Description

technical field [0001] The invention relates to a novel photocatalytic water splitting hydrogen production material and a preparation method thereof. Background technique [0002] Energy is one of the material bases for the development of human society and an indispensable factor for human survival and development. In the current development of science and technology, most of the energy required comes from the three major fossil energy sources - oil, coal and natural gas. However, the content of these fossil energy sources on the earth is limited and not inexhaustible. People's excessive exploitation of energy sources has caused fossil energy sources to face depletion. Since the use of fossil energy has produced many adverse consequences, such as environmental pollution and greenhouse effect, people have to look for new energy sources. [0003] New energy sources such as solar energy, wind energy, geothermal energy, and biomass energy are gradually being paid attention to...

Claims

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Application Information

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IPC IPC(8): C01G23/00B01J23/06C01B3/04
CPCY02E60/364Y02E60/36
Inventor 邹建平张龙珠邢秋菊彭强蔺万峰
Owner NANCHANG HANGKONG UNIVERSITY
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