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Application of hydrazine, method for stabilizing cadmium sulfide, cadmium sulfide photoanode and preparation method of cadmium sulfide photoanode, and photoelectrochemical electrolytic cells

A photoanode, photoelectrochemical technology, applied in chemical instruments and methods, special compound water treatment, light water/sewage treatment, etc., to achieve the effect of improving stability

Inactive Publication Date: 2016-09-07
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a kind of purposes of hydrazine, the method for stabilizing cadmium sulfide, cadmium sulfide photoanode and preparation method, and photoelectrochemical electrolytic cell, to solve the stability problem of cadmium sulfide

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  • Application of hydrazine, method for stabilizing cadmium sulfide, cadmium sulfide photoanode and preparation method of cadmium sulfide photoanode, and photoelectrochemical electrolytic cells
  • Application of hydrazine, method for stabilizing cadmium sulfide, cadmium sulfide photoanode and preparation method of cadmium sulfide photoanode, and photoelectrochemical electrolytic cells
  • Application of hydrazine, method for stabilizing cadmium sulfide, cadmium sulfide photoanode and preparation method of cadmium sulfide photoanode, and photoelectrochemical electrolytic cells

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Embodiment 1

[0046] The method for stabilizing the CdS photoanode in the hydrazine solution of this embodiment comprises the following steps:

[0047] Step 1, prepare 0.1-1mol / L sodium sulfate solution with deionized water.

[0048] Step 2. Add 0.1-3 mol / L hydrazine to the solution in step 1 and stir to configure a hydrazine-containing electrolyte solution (pH=10.6).

[0049] Step 3, use the three-electrode system of the electrochemical workstation: the working electrode is a CdS photoanode, the counter electrode is a platinum wire, and the reference electrode is Ag / AgCl. At the same time, under the condition of light, test the current-time curve of CdS under the hydrazine solution ( 0.75V).

[0050] The present embodiment stabilizes the current-time curve of the CdS photoanode in the hydrazine solution as Figure 4 As shown, it can be seen from the figure that in 30 hours, the current is changed from 7.2mA / cm 2 Reduced to 6.4mA / cm 2 .

Embodiment 2

[0052] The method for stabilizing the CdS photoanode in the phenylhydrazine solution of this embodiment comprises the following steps:

[0053] Step 1, configure 0.1-1mol / L sodium sulfate solution with ultrapure water.

[0054]Step 2: Add 0.1-3 mol / L phenylhydrazine to the solution in step 1 and stir, then add sodium hydroxide to adjust the pH to 10.6 (consistent with the pH of hydrazine), and prepare an electrolyte solution containing phenylhydrazine.

[0055] Step 3, use the electrochemical workstation three-electrode system: the working electrode is a CdS photoanode, the counter electrode is a platinum wire, and the reference electrode is Ag / AgCl. At the same time, under the condition of light, test the current-time of CdS under the phenylhydrazine solution Figure (0.75V).

[0056] The present embodiment stabilizes the current-time curve of CdS photoanode in phenylhydrazine as Figure 5 , it can be seen from the figure that at 255sec, the current changes from 3.5mA / cm 2 ...

Embodiment 3

[0058] The method for stabilizing the CdS photoanode in the unsymmetrical dimethylhydrazine solution of the present embodiment comprises the following steps:

[0059] Step 1, configure 0.1-1.5 mol / L sodium sulfate solution with ultrapure water.

[0060] Step 2. Add 0.1-3 mol / L unsymmetrical dimethylhydrazine to the solution in step 1 and stir, then adjust the pH to 10.6 (consistent with the pH of hydrazine), and prepare an electrolyte solution containing unsymmetrical dimethylhydrazine.

[0061] Step 3, use the three-electrode system of the electrochemical workstation: the working electrode is a CdS photoanode, the counter electrode is a platinum wire, and the reference electrode is Ag / AgCl. At the same time, under the condition of light, test the current of CdS under the unsymmetrical dimethylhydrazine solution - Time graph (0.75V).

[0062] The present embodiment stabilizes the current-time curve of the CdS photoanode in unsymmetrical dimethylhydrazine as Image 6 , it can...

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Abstract

The invention discloses an application of hydrazine, a method for stabilizing cadmium sulfide, a cadmium sulfide photoanode and a preparation method of the cadmium sulfide photoanode, and photoelectrochemical electrolytic cells. According to the invention, by adding hydrazine or analogues thereof into an electrolytic solution, stability of cadmium sulfide is greatly improved, and can be maintained for 1 to 30 hours on average.

Description

【Technical field】 [0001] The invention relates to a method of photoelectric catalysis technology in sewage treatment, in particular to a use of hydrazine, a method for stabilizing a cadmium sulfide photoanode, and a preparation method for a cadmium sulfide photoanode. 【Background technique】 [0002] As the energy crisis and environmental pollution are two serious problems facing the world, it is urgent to find a renewable and environmentally friendly energy source to solve these problems. [0003] In recent years, the development and utilization of new visible light-responsive photocatalytic materials has become a research hotspot, which is of great significance in environmental pollution control and sustainable energy development and utilization. Many researchers have turned their targets to semiconductor photocatalysts because of their potential to solve energy and environmental problems, and many report that photocatalysts are utilized in water splitting to produce hydrog...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/30
CPCC02F1/30C02F1/46109C02F2001/46133C02F2305/10C02F2201/461Y02W10/37
Inventor 李远刚史永宏李华静杨淑莉周安宁
Owner XIAN UNIV OF SCI & TECH