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Application of cadmium sulfide two-dimensional nano-sheet in hydrogen and oxygen production by acoustic wave assisted photolysis of water

A two-dimensional nano, cadmium sulfide technology, applied in the production of cadmium sulfide, oxygen/ozone/oxide/hydroxide, hydrogen, etc., can solve the problem of low hydrogen and oxygen production

Inactive Publication Date: 2018-08-28
FUZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN 107537519 A discloses a cadmium sulfide two-dimensional nanorod array to decompose pure water through sound wave-assisted photocatalysis, but the sound wave in this patent is limited to ultrasonic waves, and the production of hydrogen and oxygen is relatively low

Method used

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  • Application of cadmium sulfide two-dimensional nano-sheet in hydrogen and oxygen production by acoustic wave assisted photolysis of water
  • Application of cadmium sulfide two-dimensional nano-sheet in hydrogen and oxygen production by acoustic wave assisted photolysis of water
  • Application of cadmium sulfide two-dimensional nano-sheet in hydrogen and oxygen production by acoustic wave assisted photolysis of water

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Example 1 Synthesis of two-dimensional CdS nanosheet hybrid precursor

[0026] Weigh 0.4mmol of anhydrous cadmium chloride and 2mmol of sublimated sulfur powder, disperse in diethylenetriamine solution with a concentration of 9.12mol / L, stir at room temperature for 30min to make the precursors evenly mixed, then transfer to the reaction kettle, cover and seal , put it into a stainless steel sleeve and lock it tightly, raise the temperature to 80°C, and keep it warm for 48h; the obtained yellow powder was washed 4-5 times with deionized water and absolute ethanol respectively, and then transferred to a vacuum oven at 60°C for 12h to obtain a hybrid Precursor samples.

Embodiment 2

[0027] Example 2 Synthesis of two-dimensional CdS nanosheets

[0028] Take 40 mg of the hybrid precursor sample obtained in Example 1, disperse it in 50 ml of deionized water, disperse it ultrasonically for 2 minutes to dissolve the powder, and reflux it under stirring at 80°C for 12 hours to remove all the organic matter in the hybrid precursor. Wash with deionized water and absolute ethanol three times respectively, and transfer to a 60°C vacuum oven to dry for 6 hours. The obtained sample is labeled as CdS-NS.

Embodiment 3

[0029] Example 3 Structural Characterization

[0030] The CdS-NS synthesized in Example 2 is scanned by an X-ray diffractometer, and the results are shown in figure 1 . Depend on figure 1 It can be determined that it is a hexagonal wurtzite CdS crystal.

[0031] The CdS-NS synthesized in Example 2 was observed with an atomic force microscope, and the results are shown in figure 2 , 3 . Depend on figure 2 , 3 It can be seen that the obtained CdS is a two-dimensional nanosheet with an average thickness of about 1-3 nm and a length of not less than 800 nm.

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Abstract

The invention discloses an application of a cadmium sulfide two-dimensional nano-sheet in hydrogen and oxygen production by acoustic wave assisted photolysis of water, wherein the two-dimensional cadmium sulfide nano-sheet is a wurtzite crystal structure and belongs to non-central symmetric crystal. The specially oriented nano-sheet can accumulate acoustic energy in the environment through piezoelectric effect. An electric field is generated on the surface of the nanometer. The electric field can promote the separation of photo-generated carriers, and promote the photocatalytic decomposition of pure water to generate hydrogen and oxygen. The cadmium sulfide nano-sheet can decompose water into hydrogen and oxygen under the co-action of solar energy and acoustic energy without adding a terminator, has wide application prospect in the field of hydrogen energy. The preparation method has simple operations and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of photoacoustic catalysis, and in particular relates to an application of using two-dimensional cadmium sulfide nanosheets to enrich the acoustic energy of different frequencies in the environment to promote photocatalytic decomposition of pure water to produce hydrogen and oxygen. Background technique [0002] Energy shortage and environmental pollution are becoming more and more serious, which have become two major problems restricting the survival and development of human society. Traditional fossil energy reserves are limited, and combustion products are not environmentally friendly enough to meet the needs of sustainable development of human society. Therefore, there is an urgent need to develop and utilize clean energy. Hydrogen energy is recognized as one of the most potential energy carriers in the future due to its high efficiency and clean characteristics. Nowadays, the use of solar energy, a cle...

Claims

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Application Information

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IPC IPC(8): C01G11/02C01B3/04C01B13/02B01J27/04
CPCC01B3/042C01B13/0207C01G11/02B01J27/04C01B2203/1041C01B2203/0277C01P2002/30C01P2004/20B01J35/00B01J35/30B01J35/39Y02E60/36Y02P20/133
Inventor 刘平赵燕黄学烟张璐璐
Owner FUZHOU UNIVERSITY
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