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Method for inhibiting photo-corrosion on cadmium sulfide

A technology of cadmium sulfide and photocorrosion, applied in the direction of organic chemistry methods, organic chemistry, material electrochemical variables, etc., can solve the problems of pure cadmium sulfide photocorrosion, unstable photoelectric performance, etc.

Inactive Publication Date: 2018-09-28
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure cadmium sulfide is prone to photocorrosion after long-term illumination, resulting in unstable photoelectric performance.

Method used

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  • Method for inhibiting photo-corrosion on cadmium sulfide
  • Method for inhibiting photo-corrosion on cadmium sulfide
  • Method for inhibiting photo-corrosion on cadmium sulfide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Preparation of cadmium sulfide nanosheets (CdS NSs): Add 0.073g 2.5 cadmium chloride hydrate and 0.064g sublimed sulfur into 12mL diethylenetriamine, stir at room temperature for 1h, transfer the obtained yellow-green suspension to polytetrafluoroethylene Fluoride vinyl reactor (20mL), and heated at 80 ℃ for 48h. After naturally cooling to room temperature, the pale yellow precipitate was collected by centrifugation and washed three times with ethanol / water (V:V=1:1). The obtained light yellow powder was dried in an oven at 60 °C for 24 h.

[0027] 2) Synthesis of zinc tetrahydrazide phenylporphyrin

[0028] a. Synthesis of 5,10,15,20-tetrakis(4-carboxymethyl)phenylporphyrin: freshly steamed pyrrole and propionic acid by vacuum distillation. Add 7.5g (45mmol) methyl p-formylbenzoate and 200mL propionic acid to a 500ml three-necked flask, stir magnetically and heat to 128°C, dissolve 3.1mL (45mmol) pyrrole in 10mL propionic acid, drop The liquid funnel was slowly a...

Embodiment 2

[0043] 1) The preparation of cadmium sulfide nanosheets is the same as in Example 1.

[0044] 2) The preparation of zinc tetrahydrazide phenylporphyrin is the same as in Example 1.

[0045] 3) Cadmium sulfide nanosheets / zinc tetrahydrazide phenylporphyrin composite material: Weigh 20 mg of cadmium sulfide nanosheets, add 20 mL of DMF, sonicate for 1 hour to form a suspension, and then add zinc tetrahydrazide phenyl porphyrin 4 mg of morphine, continued to sonicate for 30 min, and then stirred at room temperature for 24 h at a rotational speed of 700 rpm. The product was obtained by centrifugation, washed several times with absolute ethanol, and dried at 60°C for 6h.

Embodiment 3

[0047] 1) The preparation of cadmium sulfide nanosheets is the same as in Example 1.

[0048] 2) The preparation of zinc tetrahydrazide phenylporphyrin is the same as in Example 1.

[0049] 3) Cadmium sulfide nanosheets / zinc tetrahydrazide phenylporphyrin composite material: Weigh 20 mg of cadmium sulfide nanosheets, add 20 mL of DMF, sonicate for 1 hour to form a suspension, and then add zinc tetrahydrazide phenyl porphyrin 6 mg of morphine, continued to sonicate for 30 min, and then stirred at room temperature for 24 h at a rotational speed of 700 rpm. The product was obtained by centrifugation, washed several times with absolute ethanol, and dried at 60°C for 6h.

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Abstract

The invention discloses a method for inhibiting photo-corrosion on cadmium sulfide. The method comprises the step of modifying the surface of cadmium sulfide by using zinc tetrahydrazide phenyl porphyrin, wherein the zinc tetrahydrazide phenyl porphyrin can be anchored in the surface of the cadmium sulfide through carbonyl groups. By introducing the zinc tetrahydrazide phenyl porphyrin, recombination of photo-generated electron-holes in cadmium sulfide nano sheets can be reduced, the photo-corrosion of the cadmium sulfide can inhibited, the migration rate of the photo-generated electrons can be accelerated, and the cadmium sulfide has good photoelectric performance, and can be an excellent photoelectric material which is applied to construction of dopamine photoelectric chemical sensors.

Description

technical field [0001] The invention relates to a method for suppressing cadmium sulfide photocorrosion. Background technique [0002] With the rapid development of industry and the massive burning of fossil fuels, the problems of environmental pollution and energy shortage faced by human beings have become increasingly prominent. Various pollutants are directly discharged into the agricultural environment, which will not only affect agricultural production, but also affect human health. At the same time, the massive consumption of fossil fuels will also bring about an increasingly severe energy crisis. Nowadays, solar energy, as an ideal, efficient and renewable energy source, has attracted the attention of more researchers, so scientists have devoted a lot of work to the preparation and application of photosensitized materials. [0003] Cadmium sulfide is an n-type inorganic semiconductor material with a direct band gap in the II-VI main group, with a band gap of 2.42eV....

Claims

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Application Information

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IPC IPC(8): C07D487/22B82Y30/00G01N27/26
CPCB82Y30/00C07B2200/11C07D487/22G01N27/26
Inventor 卢小泉武亚丽马小芳高瑞琴张彩中牛琦霞陕多亮
Owner NORTHWEST NORMAL UNIVERSITY