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Cadmium sulfide ultrathin nanometer flaky material preparation method and application thereof

A nano-flaky, cadmium sulfide technology, applied in cadmium sulfide, chemical instruments and methods, nanotechnology, etc., can solve the problems of easy agglomeration, increased surface energy, and decreased activity of ultra-thin sheet-shaped materials, and achieves low-cost, synthetic Effect of low temperature and stable structure

Inactive Publication Date: 2017-05-24
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main advantage of ultra-thin flake materials is high activity due to large specific surface area, on the other hand, too large specific surface area will also lead to increased surface energy, making ultra-thin flake materials very easy to agglomerate and lead to a decrease in activity

Method used

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  • Cadmium sulfide ultrathin nanometer flaky material preparation method and application thereof
  • Cadmium sulfide ultrathin nanometer flaky material preparation method and application thereof
  • Cadmium sulfide ultrathin nanometer flaky material preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. Raw materials: analytically pure cadmium chloride 5 / 2 hydrate, sulfur powder, diethylenetriamine, L-cysteine.

[0039] 2. Weigh 0.0732g of cadmium chloride 5 / 2 hydrate and 0.064g of sulfur powder in a 20mL autoclave, and add 12mL of diethylenetriamine into it, and stir magnetically for 30 minutes at room temperature.

[0040] 3. Seal the autoclave well, put it in an oven and react at 70°C for 48 hours.

[0041] 4. After the reactor was naturally cooled to room temperature, it was taken out, and the product was transferred from the reactor to a centrifuge tube for centrifugation, washed with water and ethanol three times, and then dried in a vacuum oven at 40°C for 6 hours.

[0042] 5. Weigh 20 mg of the above product and 10 mg of L-cysteine ​​into a 100 mL beaker, then add 0.1 mL of diethylenetriamine and 50 mL of water, and then put the beaker into an ultrasonic machine for continuous low-power ultrasonication for two hours.

[0043] 6. Transfer the sonicated produ...

Embodiment 2

[0045] 1. Raw materials: analytically pure cadmium chloride 5 / 2 hydrate, sulfur powder, diethylenetriamine, L-cysteine.

[0046] 2. Weigh 0.183g of cadmium chloride 5 / 2 hydrate and 0.16g of sulfur powder into a 50mL autoclave, and add 30mL of diethylenetriamine into it, and stir magnetically for 30 minutes at room temperature.

[0047] 3. Seal the autoclave well, put it in an oven and react at 80°C for 48 hours.

[0048] 4. After the reactor was naturally cooled to room temperature, it was taken out, and the product was transferred from the reactor to a centrifuge tube for centrifugation, washed with water and ethanol three times, and then dried in a vacuum oven at 40°C for 6 hours.

[0049] 5. Weigh 75mg of the above product and 25mg of L-cysteine ​​into a 250mL beaker, then add 0.25mL of diethylenetriamine and 100mL of water to it, and then put the beaker into an ultrasonic machine for continuous low-power ultrasonication for two hours.

[0050] 6. Transfer the sonicated pr...

Embodiment 3

[0052] 1. Raw materials: analytically pure cadmium chloride 5 / 2 hydrate, sulfur powder, diethylenetriamine, L-cysteine.

[0053] 2. Weigh 0.366g of cadmium chloride 5 / 2 hydrate and 0.32g of sulfur powder in a 100mL autoclave, and add 60mL of diethylenetriamine into it, and stir magnetically for 30 minutes at room temperature.

[0054] 3. Seal the autoclave well, put it in an oven and react at 90°C for 40 hours.

[0055] 4. After the reactor was naturally cooled to room temperature, it was taken out, and the product was transferred from the reactor to a centrifuge tube for centrifugation, washed with water and ethanol three times, and then dried in a vacuum oven at 40°C for 6 hours.

[0056] 5. Weigh 750mg of the above product and 50mg of L-cysteine ​​into a 500mL beaker, then add 0.5mL of diethylenetriamine and 150mL of water to it, and then put the beaker into an ultrasonic machine for continuous low-power ultrasonication for two hours.

[0057] 6. Transfer the sonicated pro...

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PUM

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Abstract

The invention discloses a cadmium sulfide ultrathin nanometer flaky material preparation method and application thereof. The preparation method comprises the steps of using cadmium chloride, powdered sulfur and diethylene triamine as raw materials to prepare a cadmium sulfide-amine hybridized nanosheet; then mixing the nanosheet, L-cysteine, water and the diethylene triamine to obtain uniform-distribution cadmium sulfide ultrathin nanometer flaky material water solution under an ultrasonic effect. A nanometer flaky material disclosed by the invention has the size of 100 to 300 nanometers, and the thickness of 3 to 5 nanometers. A two-step synthesizing method of the cadmium sulfide ultrathin nanometer flaky material disclosed by the invention has the characteristics of low cost, low synthesizing temperature, high product purity, ultrathin nanosheet, certain quantum size effect, stable structure and obvious advantage on phototcatalytic hydrogen production.

Description

technical field [0001] The invention relates to the technical field of semiconductor nanomaterials, and more specifically relates to a preparation method and application of a cadmium sulfide ultrathin nanosheet material. Background technique [0002] In order to solve the increasingly severe energy crisis and environmental problems, hydrogen production by photolysis of water is considered as one of the potential, environment-friendly methods to convert solar energy into chemical energy. Since Japanese scholars Fujishima and Hongda discovered in 1972 what happened in Ti 2 After the phenomenon of photo-splitting water on the O electrode, people began to devote a lot of energy to study the photo-splitting hydrogen production performance of various semiconductor catalysts. Among these semiconductors, cadmium sulfide is considered to be one of the most promising catalysts for hydrogen production from water splitting due to its suitable conduction and valence band positions and s...

Claims

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Application Information

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IPC IPC(8): C01G11/02C01B3/04B01J27/04B82Y40/00
CPCC01B3/042C01G11/02B01J27/04C01P2002/72C01P2002/85C01P2004/04C01P2004/24B01J35/40B01J35/39Y02E60/36
Inventor 张兵史艳梅许友赵为为许蕊
Owner TIANJIN UNIV
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