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Method for preparing cadmium sulfide-titanium dioxide nano-tube composite catalyst

A nanotube composite and catalyst technology is applied in physical/chemical process catalysts, chemical instruments and methods, hydrogen production, etc. simple method effect

Inactive Publication Date: 2010-07-28
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above applications are all TiO 2 Nanoparticles loaded with CdS or CdS and TiO 2 Nanoparticle composite photocatalysts are not suitable for CdS-doped TiO 2 Preparation of Nanotube Composite Catalyst

Method used

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  • Method for preparing cadmium sulfide-titanium dioxide nano-tube composite catalyst
  • Method for preparing cadmium sulfide-titanium dioxide nano-tube composite catalyst
  • Method for preparing cadmium sulfide-titanium dioxide nano-tube composite catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Step 1, take 0.40g anatase TiO 2 Nanoparticles, placed in a polytetrafluoroethylene reactor, add 100ml deionized water, stir until evenly mixed;

[0027] Step 2, add 2.76ml 0.01molL to the polytetrafluoroethylene reaction kettle in turn -1 CdCl 2 2.5H 2 Aqueous solution of O and 2.76ml of 0.01molL -1 Na 2 S9H 2 O aqueous solution, mixed, then added 40g NaOH, and ultrasonically oscillated for 30min;

[0028] Step 3, place the polytetrafluoroethylene reactor in a microwave reactor with a reflux device, microwave the polytetrafluoroethylene reactor, the microwave emission power is 300w, and the microwave heating time is 120min; then let it stand for 6 hours, use Wash the product with deionized water until the pH of the washing solution is 7, filter it with suction, and dry it in vacuum at 80°C to obtain CdS-TiO 2 Nanotube Composite Catalysts.

[0029] Implementation effect of this embodiment: figure 1 CdS-TiO prepared for this example 2 Photos of nanotube catalys...

Embodiment 2

[0031] Step 1, take 0.10g anatase TiO 2 Nanoparticles, placed in a polytetrafluoroethylene reactor, add 100ml deionized water, stir until evenly mixed;

[0032] Step 2, add 5.52ml 0.01molL to the polytetrafluoroethylene reaction kettle in turn -1 CdCl 2 2.5H2 Aqueous solution of O and 5.52ml of 0.01molL -1 Na 2 S9H 2 O aqueous solution, mixed, then added 40g NaOH, and ultrasonically oscillated for 30min;

[0033] Step 3, place the polytetrafluoroethylene reactor in a microwave reactor with a reflux device, microwave the polytetrafluoroethylene reactor, the microwave emission power is 300w, and the microwave heating time is 120min; then let it stand for 6 hours, use Wash the product with deionized water until the pH of the washing solution is 7, filter it with suction, and dry it in vacuum at 80°C to obtain CdS-TiO 2 Nanotube Composite Catalysts.

[0034] Implementation effect of this example: CdS-TiO prepared in this example 2 Catalytic properties of nanotube composite...

Embodiment 3

[0036] Step 1, take 0.20g anatase TiO 2 Nanoparticles, placed in a polytetrafluoroethylene reactor, add 100ml deionized water, stir until evenly mixed;

[0037] Step 2, add 11.04ml 0.01molL to the polytetrafluoroethylene reaction kettle in turn -1 CdCl 2 2.5H 2 O in water and 11.04ml of 0.01molL -1 Na 2 S9H 2 O aqueous solution, mixed, then added 40g NaOH, and ultrasonically oscillated for 30min;

[0038] Step 3, place the polytetrafluoroethylene reactor in a microwave reactor with a reflux device, microwave the polytetrafluoroethylene reactor, the microwave emission power is 300w, and the microwave heating time is 120min; then let it stand for 6 hours, use Wash the product with deionized water until the pH of the washing solution is 7, filter it with suction, and dry it in vacuum at 80°C to obtain CdS-TiO 2 Nanotube Composite Catalysts.

[0039] Implementation effect of this example: CdS-TiO prepared in this example 2 Catalytic properties of nanotube composite cataly...

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Abstract

The invention provides a method for preparing a cadmium sulfide-titanium dioxide nano-tube composite catalyst in the technical field of photocatalyst. The method comprises the following steps: 1, putting anatase TiO2 nano-particles in a polytetrafluoroethylene reaction kettle, adding deionized water into the reaction kettle, and stirring the mixture; 2, adding aqueous solution of CdCl2.2.5H2O and aqueous solution of Na2S.9H2O into the polytetrafluoroethylene reaction kettle in sequence, mixing the mixture, adding NaOH into the mixture, and performing ultrasonic oscillation on the mixture; and 3, performing microwave heating on the polytetrafluoroethylene reaction kettle, standing the mixture, cleaning the mixture until the pH of the lotion is 7, pumping and filtering the lotion, and drying the filter cake in vacuum to obtain the CdS-TiO2 nano-tube composite catalyst. In the CdS-doped TiO2 nano-tube prepared by the method, spectral response of the titanium dioxide nano-tube is expanded to a visible light range to ensure that the catalyst can absorb the visible light, so that the catalytic hydrogen production activity of the catalyst is improved.

Description

technical field [0001] The invention relates to a method for preparing a catalyst in the technical field of photocatalysts, in particular to a CdS-TiO 2 Preparation method of nanotube composite catalyst. Background technique [0002] Hydrogen, as an ideal renewable energy source, has attracted great interest. As a way to produce hydrogen, solar energy splitting water to produce hydrogen has also received extensive attention. Therefore, finding suitable photocatalysts to improve the efficiency of hydrogen production from water splitting by sunlight is becoming a research hotspot. At present, the photocatalysts that people have studied a lot are mainly TiO 2 . TiO 2 Because of its non-toxic, good chemical stability, strong oxidation ability, cheap and easy to obtain, it has become the most ideal photocatalyst. However TiO 2 The band gap is 3.2eV, and it can only absorb ultraviolet light with a wavelength of less than 387.5nm, which accounts for only about 5% of sunlight...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J21/06C01B3/04
CPCY02E60/364Y02E60/36
Inventor 蒋淇忠董源胡肖俊马紫峰上官文峰
Owner SHANGHAI JIAO TONG UNIV
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