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High-activity cubic-block silver chloride micron-crystal and electrochemical preparation method thereof

A technology of silver chloride and cubes, applied in chemical instruments and methods, silver halide, chemical/physical processes, etc., can solve problems such as complicated experimental methods, and achieve simple synthesis methods and steps, good uniformity, and high crystallinity. Effect

Inactive Publication Date: 2013-12-25
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently reported methods for synthesizing highly active silver chloride are to control the exchange rate of silver ions or the hydrothermal process through multi-step experimental steps to achieve the desired results, and the experimental methods are relatively complicated.

Method used

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  • High-activity cubic-block silver chloride micron-crystal and electrochemical preparation method thereof
  • High-activity cubic-block silver chloride micron-crystal and electrochemical preparation method thereof
  • High-activity cubic-block silver chloride micron-crystal and electrochemical preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Measure 100ml of deionized water into the beaker, add 1.42g of sodium sulfate to the above solution, stir for 10 minutes to fully dissolve the solid; then add 0.175g of sodium chloride solution into the above solution, and keep stirring to make the solution uniform Add the above solution into the H-type electrochemical reaction cell; finally put the 1×1cm silver sheet into one section of the reaction cell and connect it with the anode of the constant potential power supply, put the same size platinum sheet at the other end The cathode of the potential power supply is connected, the distance between the two electrodes is kept at 6 cm, the output voltage of the constant potential power supply is adjusted to 6V, and the reaction is carried out at room temperature for 30 minutes. Washed twice with deionized water, dried in a constant temperature oven at 60°C to obtain cubic silver chloride micro-crystals.

[0034] attached figure 1 (b) is the X-ray diffraction figure of em...

Embodiment 2

[0037] Measure 100ml of deionized water into the beaker, add 1.42g of sodium sulfate to the above solution, stir for 10 minutes to fully dissolve the solid; then add 0.175g of sodium chloride solution into the above solution, and keep stirring to make the solution uniform Add the above solution into the H-type electrochemical reaction cell; finally put the 1×1cm silver sheet into one section of the reaction cell and connect it with the anode of the constant potential power supply, put the same size platinum sheet at the other end The cathode of the potential power supply is connected, and the distance between the two electrodes is kept at 6 cm. The output voltage of the constant potential power supply is adjusted to 1.5V and reacted at room temperature for 30 minutes. The precipitation in the H-type electrochemical reaction cell on one side of the silver sheet is filtered. Wash twice with deionized water, and dry in a constant temperature oven at 60° C. to obtain cubic silver c...

Embodiment 3

[0040]Measure 100ml of deionized water into the beaker, add 1.42g of sodium sulfate into the above solution, stir for 10 minutes to fully dissolve the solid; then add 0.058g of sodium chloride solution into the above solution, and keep stirring to make the solution uniform Add the above solution into the H-type electrochemical reaction cell; finally put the 1×1cm silver sheet into one section of the reaction cell and connect it with the anode of the constant potential power supply, put the same size platinum sheet at the other end The cathode of the potential power supply is connected, and the distance between the two electrodes is kept at 6 cm. The output voltage of the constant potential power supply is adjusted to 3V and reacted at room temperature for 30 minutes. Washed twice with deionized water, dried in a constant temperature oven at 60°C to obtain cubic silver chloride micro-crystals.

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Abstract

The invention relates to a high-activity cubic-block silver chloride micron-crystal and an electrochemical preparation method thereof. The high-activity cubic-block silver chloride micron-crystal is of pure cubic-phase silver chloride and has a {100}-face-exposed crystal face structure. The method comprises the steps of adding sodium sulfate into a certain volume of deionized water, stirring to dissolve solids, then, adding sodium chloride, and stirring for mixing uniformly; transferring the prepared mixed solution into an H-shaped electrochemical reaction tank, adding a silver sheet to one end of the reaction tank, connecting the end of the reaction tank to the positive pole of a constant-potential power supply, adding a platinum sheet to the other end of the reaction tank, and connecting the other end of the reaction tank to the negative pole of the constant-potential power supply; regulating the voltage output by the power supply, oxidizing the silver sheet so as to generate silver ions, reacting for 30-40 minutes at room temperature, filtering and washing precipitates at the bottom of the reaction tank nearby the silver sheet electrode, and drying in a thermostat, thereby obtaining the cubic-block silver chloride micron-crystal. Under visible light, the activity of a photocatalyst formed by the cubic-block silver chloride micron-crystal is relatively high.

Description

technical field [0001] The invention relates to a silver chloride crystal, in particular to a highly active cubic silver chloride micron crystal and an electrochemical preparation method thereof, which can be used in the environmental protection field of visible light degradation of organic pollutants. Background technique [0002] Since Japanese scientists discovered in 1972 that titanium dioxide electrodes can photolyze water to produce hydrogen under light, photocatalytic technology has attracted the attention of scientists all over the world. Using photocatalytic technology can not only photolyze water to generate hydrogen and oxygen, but also degrade organic pollutants and heavy metal pollutants. Therefore, photocatalytic technology has the potential to replace fossil fuels as a sustainable green energy technology. At present, the efficient and stable photocatalytic materials are mainly some wide-bandgap semiconductor materials, which only use the ultraviolet part of su...

Claims

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Application Information

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IPC IPC(8): C01G5/02C25B1/26B01J27/10
Inventor 秦晓燕娄在祝黄柏标张晓阳
Owner SHANDONG UNIV
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