Preparation of nano zinc powder by single groove ultrasonic electrolytic process

A technology of nano-zinc powder and ultrasound, which is applied in the direction of photographic process, instrument, photographic auxiliary process, etc., to achieve the effect of easy process, good catalytic performance, and stable composition and content

Inactive Publication Date: 2007-02-14
HUAZHONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Preparation of nano zinc powder by single groove ultrasonic electrolytic process
  • Preparation of nano zinc powder by single groove ultrasonic electrolytic process

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Prepare nano-zinc powder, the preparation steps are:

[0023] Step 1, distilled water and dimethyl sulfoxide are mixed and dissolved according to the volume ratio of 1:80;

[0024] Step 2, using the solution obtained in step 1 as a solvent, adding zinc sulfate and dissolving it, making an electrolyte solution with a zinc ion concentration of 0.02 mol / liter, then adding surfactant sodium oleate to a concentration of 0.2 g / L Lift;

[0025] Step 3. Insert a titanium alloy ultrasonic probe into the solution obtained in step 2 as the cathode, and a zinc plate as the anode, apply pulsed direct current, and turn on the ultrasonic function at the same time, with an average current density of 0.2 amperes / cm 2 , the pulse frequency is 50 Hz, and the ultrasonic power is 10 kW;

[0026] Step 4. After applying the current at 6 o'clock, stop the electrolysis and filter the electrolyte, wash the collected zinc powder with absolute ethanol, and dry it with nitrogen at room temperatur...

Embodiment 2

[0028] Prepare nano-zinc powder, the preparation steps are:

[0029] Step 1, distilled water and dimethyl sulfoxide are mixed and dissolved according to the volume ratio of 1:50;

[0030] Step 2, using the solution obtained in step 1 as a solvent, adding zinc chloride and dissolving it to form an electrolyte solution with a zinc ion concentration of 0.1 mol / liter, and then adding surfactant polyethylene glycol to a concentration of 0.8 g / L;

[0031] Step 3. Insert a titanium alloy ultrasonic probe into the solution obtained in step 2 as the cathode, and a zinc plate as the anode, apply pulsed direct current, and turn on the ultrasonic function at the same time, with an average current density of 0.5 ampere / cm 2 , the pulse frequency is 50 Hz, and the ultrasonic power is 30 kW.

[0032] Step 4. After applying the current for 6 hours, stop the electrolysis and filter the electrolyte, wash the collected zinc powder with absolute ethanol, and dry it with nitrogen at room tempera...

Embodiment 3

[0034] Prepare nano-zinc powder, the preparation steps are:

[0035] Step 1, distilled water and dimethyl sulfoxide are mixed and dissolved according to the volume ratio of 1:20;

[0036] Step 2, take the solution obtained in step 1 as a solvent, add zinc nitrate and dissolve it thereinto, and make an electrolyte solution with a zinc ion concentration of 0.15 mol / liter, then add surfactant polyvinylpyrrolidone to a concentration of 5 grams / liter Lift;

[0037] Step 3. Insert a titanium alloy ultrasonic probe into the solution obtained in step 2 as the cathode, and a zinc plate as the anode, apply pulsed direct current, and turn on the ultrasonic function at the same time, with an average current density of 1 ampere / cm 2 , the pulse frequency is 50 Hz, and the ultrasonic power is 80 kW.

[0038] Step 4. After applying the current for 5 hours, stop the electrolysis and filter the electrolyte, wash the collected zinc powder with absolute ethanol, and dry it with nitrogen at roo...

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Abstract

The invention relates to a nanometer zinc dust single groove ultrasound electrolytic preparing method. Its features are that adding certain distilled water, zinc salt, and surface active agent into conductivity organic solution; cutting into titanium alloy ultrasound probe as cathode, zinc plate as anode; exerting pulse current; zinc ion will electrodeposit on the titanium alloy probe, and peel off from the cathode under the action of the ultrasound to form nanometer simple substance zinc powder. The whole electrolytic process is processed in one groove, and can be continuous by using zinc as the anode to complement the consumed zinc ion. The filtrate can be continuously used after zinc powder collecting. Thus this can realize no waste liquor producing in the whole preparation course which is controllable, and can satisfy the real production demand.

Description

technical field [0001] The invention relates to a single-tank ultrasonic electrolysis preparation method of nano-zinc powder, which belongs to the field of nano-metal material preparation. Background technique [0002] The characteristics of high activity and large specific surface area of ​​nanopowders make them suitable for use as catalysts. Experimental research shows that nano-zinc powder has a strong catalytic effect. Catalysts made of these nano-powders have a catalytic efficiency dozens of times higher than traditional catalysts in the chemical synthesis of some organic substances, and can be used for hydrogenation of organic substances, automobile exhaust gas treatment, etc. In addition, adding nano-zinc powder to the coating can not only improve the cathodic protection ability of the coating, but also improve the sealability of the coating due to the wider size distribution of the zinc powder, resulting in a greatly improved corros...

Claims

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Application Information

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IPC IPC(8): C25C5/02C25C1/16
Inventor 张礼知贾法龙胡䶮唐一文
Owner HUAZHONG NORMAL UNIV
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