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Electrolysis electrode loaded with graphene modified tin dioxide and preparation method thereof

A technology of tin dioxide and electrolytic electrodes, which is applied in the field of electrochemical catalysis, can solve the problems of high cost of oxides, secondary pollution, and difficulty in recycling, and achieve the effects of simple preparation methods, improved catalytic efficiency, and low manufacturing costs

Inactive Publication Date: 2012-07-04
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, these oxides have high cost, are difficult to recycle, and are easy to cause secondary pollution and other defects.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The electrolytic electrode loaded with graphene-modified tin dioxide in this embodiment consists of a titanium substrate and graphene-modified tin dioxide loaded on the titanium substrate, wherein each square centimeter of titanium substrate is loaded with 4 μg of graphene-modified tin dioxide; The mass ratio of the graphene and tin dioxide is 0.1:1000.

[0025] Its preparation method is:

[0026] (1) Pretreatment of the titanium substrate: polish the titanium substrate with 120-mesh sandpaper and place it in a NaOH solution with a mass concentration of 40% at a temperature of 80°C for 30 minutes to chemically degrease, then wash the degreased titanium substrate with distilled water Wash and dry, then immerse the dried titanium substrate in an oxalic acid solution with a temperature of 80°C and a mass concentration of 10% for etching for 2 hours, and finally rinse the etched titanium substrate with distilled water, and dry it at room temperature;

[0027] (2) Preparati...

Embodiment 2

[0032] The electrolytic electrode loaded with graphene-modified tin dioxide in this embodiment consists of a titanium substrate and graphene-modified tin dioxide loaded on the titanium substrate, wherein each square centimeter of titanium substrate is loaded with 2 μg of graphene-modified tin dioxide; The mass ratio of graphene and tin dioxide is 0.27:1000.

[0033] Its preparation method is:

[0034] (1) Pretreatment of the titanium substrate: the titanium substrate is polished smooth with 120 mesh sandpaper and then placed in a NaOH solution with a temperature of 90 ° C and a mass concentration of 30% to chemically degrease for 40 minutes, and then the degreased titanium substrate is washed with distilled water Wash and dry, then immerse the dried titanium substrate in an oxalic acid solution with a temperature of 70°C and a mass concentration of 15% for etching for 3 hours, finally rinse the etched titanium substrate with distilled water, and dry it at room temperature;

...

Embodiment 3

[0040] The electrolytic electrode loaded with graphene-modified tin dioxide in this embodiment consists of a titanium substrate and graphene-modified tin dioxide loaded on the titanium substrate, wherein each square centimeter of titanium substrate is loaded with 0.1 μg of graphene-modified tin dioxide ; The mass ratio of the graphene and tin dioxide is 0.5: 1000.

[0041] Its preparation method is:

[0042](1) Pretreatment of the titanium substrate: the titanium substrate is polished smooth with 120 mesh sandpaper, and then placed in a NaOH solution with a temperature of 85 ° C and a mass concentration of 35% for 20 minutes, and then the titanium substrate after degreasing is cleaned with distilled water Wash and dry, then immerse the dried titanium substrate in an oxalic acid solution with a temperature of 75°C and a mass concentration of 5% for etching for 4 hours, finally rinse the etched titanium substrate with distilled water, and dry it at room temperature;

[0043] (2...

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PUM

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Abstract

The invention discloses an electrolysis electrode loaded with graphene modified tin dioxide and a preparation method thereof. The electrolysis electrode consists of a titanium substrate and the graphene modified tin dioxide loaded on the titanium substrate, wherein each square centimeter of titanium substrate is loaded with 0.1 to 4mu g of graphene modified tin dioxide; and a mass ratio of graphene to tin dioxide is (0.1-2.5):1,000. The preparation method comprises the following steps of: pretreating the titanium substrate; preparing graphene-tin tetrachloride sol; vertically immersing the pretreated titanium substrate in the graphene-tin tetrachloride sol for impregnation, airing, drying, and roasting; and impregnating and roasting for three to five times, and cooling with a furnace to obtain the electrolysis electrode loaded with the graphene modified tin dioxide. The preparation method is simple, and easy to popularize and apply, the high property of the graphene is furthest protected, the catalysis efficiency of the electrolysis electrode is maximally improved, and the prepared electrolysis electrode has high electro-catalysis efficiency and stable property and is reusable.

Description

technical field [0001] The invention belongs to the technical field of electrochemical catalysis, and in particular relates to an electrolytic electrode loaded with graphene-modified tin dioxide and a preparation method thereof. Background technique [0002] As a clean water treatment technology, electrochemical wastewater treatment technology has attracted attention because of its small equipment size, no secondary pollution, and easy combination with other treatment methods, showing a good application prospect. [0003] Since 1968, Beer et al. have successfully developed titanium-based coated electrodes. For decades, this type of electrode has developed into the main form of metal oxide electrode, which is called dimensionally stable anode (DSA). The term DSA comes from the fact that the distance between the cathode and the anode does not change over time, indicating that the electrode wears very little and can maintain dimensional stability. The emergence of DSA electro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/46
Inventor 杨胜科朱涛王文科赵钺陈静周敏费晓华
Owner CHANGAN UNIV
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