Composite photo-catalyst and preparation method and application thereof

A photocatalyst and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of restricting the practical application of photocatalytic technology, low quantum efficiency, low solar energy utilization rate, etc., to achieve It is conducive to large-scale promotion and the effect of simple and easy preparation method

Inactive Publication Date: 2013-10-30
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, semiconductor photocatalytic technology has attracted extensive attention from scientists in many fields due to its important application prospects in hydrogen energy development and environmental pollution control. However, due to the traditional TiO 2 The shortcomings of low quantum efficiency and low utilization rate of solar energy in photocatalysts restrict the practical application of photocatalytic technology. Therefore, the successful development and design of new high-efficiency photocatalysts is one of the key technologies for using solar energy to control environmental pollution and develop hydrogen energy.

Method used

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  • Composite photo-catalyst and preparation method and application thereof
  • Composite photo-catalyst and preparation method and application thereof
  • Composite photo-catalyst and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1, composite photocatalyst SnO x / LaCO 3 Preparation of OH

[0020] Weigh 0.006 mol CO(NH 2 ) 2 The solid was dissolved in 35 mL deionized water to prepare a urea solution; 0.001 mol La(NO 3 ) 3 ·6H 2 Dissolve the O solid in 35 mL deionized water to prepare a lanthanum nitrate solution; weigh 0.0001 mol SnCl 2 2H 2 O solid was dissolved in 35 mL of absolute ethanol to obtain stannous chloride alcohol solution; while stirring, urea solution and stannous chloride solution were successively added dropwise to the lanthanum nitrate solution, and the stirring was continued for 30 minutes, and the mixed solution was transferred to the high-pressure reaction In the kettle, keep the temperature at 90°C for 24 hours, cool down to room temperature naturally, centrifuge the obtained precipitate, wash, dry at 40°C under normal pressure for 24 hours, and grind to obtain light yellow SnO x / LaCO 3 OH composite photocatalyst powder.

Embodiment 2

[0021] Embodiment 2, composite photocatalyst SnO x / LaCO 3 Preparation of OH

[0022] Weigh 0.006 mol CO(NH 2 ) 2 The solid was dissolved in 35 mL deionized water to prepare a urea solution; 0.001 mol La(NO 3 ) 3 ·6H 2 Dissolve the O solid in 35 mL deionized water to prepare a lanthanum nitrate solution; weigh 0.001 mol SnCl 2 2H 2 O solid was dissolved in 35 mL of absolute ethanol to obtain stannous chloride alcohol solution; while stirring, urea solution and stannous chloride solution were successively added dropwise to the lanthanum nitrate solution, and the stirring was continued for 180 minutes, and the mixed solution was transferred to the high-pressure reaction In the kettle, keep the temperature at 180°C for 12 hours, cool down to room temperature naturally, centrifuge the obtained precipitate, wash, dry at 120°C under normal pressure for 24 hours and grind to obtain light yellow SnO x / LaCO 3 OH composite photocatalyst powder.

Embodiment 3

[0023] Embodiment 3, composite photocatalyst SnO x / LaCO 3 Preparation of OH

[0024] Weigh 0.006 mol CO(NH 2 ) 2 The solid was dissolved in 35 mL deionized water to prepare a urea solution; 0.001 mol La(NO 3 ) 3 ·6H 2 Dissolve the O solid in 35 mL deionized water to prepare a lanthanum nitrate solution; weigh 0.0005 mol SnCl 2 2H 2 O solid was dissolved in 35 mL of absolute ethanol to obtain stannous chloride alcohol solution; while stirring, urea solution and stannous chloride solution were successively added dropwise to the lanthanum nitrate solution, and the stirring was continued for 60 minutes, and the mixed solution was transferred to the high-pressure reaction In the kettle, keep the temperature at 120°C for 24 hours, cool down to room temperature naturally, centrifuge the obtained precipitate, wash, dry at 60°C under normal pressure for 24 hours, and grind to obtain light yellow SnO x / LaCO 3 OH composite photocatalyst powder. figure 1 Demonstrated the compo...

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Abstract

The invention discloses a composite photo-catalyst and a preparation method and application thereof. The photo-catalyst is a composite material prepared by basic lanthanum carbonate (LaCO3OH) and stannic oxide (SnOx), and a chemical formula is SnOx / LaCO3OH. The SnOx / LaCO3OH composite material is first applied to the fields of photo-catalytic water decomposition for hydrogen production and photo-catalytic environmental pollution improvement. The preparation method is simple, easy to perform and temperate in synthesis condition, does not need complicated and expensive devices and facilitates large-scale popularization.

Description

technical field [0001] The invention belongs to the technical field of new material preparation, photocatalytic environmental pollution control, and photocatalytic decomposition of water to produce hydrogen, and specifically relates to composite photocatalyst SnO x / LaCO 3 The preparation method and application of OH. Background technique [0002] With the increasingly serious energy crisis and environmental pollution, the sustainable development of human society is facing great challenges. Since 1972, Fujishima and Honda first reported TiO on Nature. 2 Since hydrogen can be produced by photolysis of water, how to effectively use solar energy to control pollution and develop new energy has attracted widespread attention from all over the world. In recent years, semiconductor photocatalytic technology has attracted extensive attention from scientists in many fields due to its important application prospects in hydrogen energy development and environmental pollution control....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/236C01B3/04C02F1/30C02F101/30
CPCY02E60/364Y02E60/36
Inventor 苏文悦付贤智王绪绪刘平陈旬吴棱员汝胜解泉华
Owner FUZHOU UNIV
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