Tin dioxide modified ceramic electrode making method

A technology of tin dioxide and ceramic electrodes, which is applied in the field of preparation of tin dioxide modified ceramic electrodes, can solve problems such as large resistance at room temperature, and achieve the effects of low equipment requirements, high conductivity and good stability

Inactive Publication Date: 2014-01-01
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still a series of problems in the use of tin dioxide to prepare anode electrodes: for example, tin dioxide is a semiconductor, and its resistance at room temperature is very large.

Method used

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  • Tin dioxide modified ceramic electrode making method
  • Tin dioxide modified ceramic electrode making method
  • Tin dioxide modified ceramic electrode making method

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preparation example Construction

[0019] A kind of preparation method of tin dioxide modified ceramic electrode of the present invention is characterized in that: comprise the following steps:

[0020] Step 1: Ingredients: Select SnO with a particle size of 0.1-20μm 2 Powder, sintering aid choose TiO with a particle size of 0.1-0.5μm 2 Powder, paraffin liquid as plasticizer, 0.1-0.5μm Sb as additive 2 o 3 Powder and 0.1-0.5μm Fe 2 o 3 Powder, among them, TiO 2 The quality of the powder is SnO 2 0.5-2.5% of the mass of the powder, the mass of the paraffin liquid is SnO 2 3-5% of powder mass, Sb 2 o 3 The quality of the powder is SnO 2 15-25% of powder mass, Fe 2 o 3 The quality of the powder is SnO 2 10-20% of the powder mass, spare;

[0021] Step 2: Granulation: SnO 2 Powder raw material, TiO 2 Powder, Sb 2 o 3 Powder, Fe 2 o 3 The powder and the paraffin liquid are fully ground and mixed in a mortar, and the uniformly mixed slurry is poured into a container, and left to age at room temperat...

Embodiment 1

[0039] 1) Ingredients: 0.1μm SnO with a purity of 99% in an electronic balance 2 Powder, 0.2μm TiO with a purity of 99% 2 Powder, 0.2μm Sb with a purity of 98% 2 o 3 Powder, 0.2μm Fe with a purity of 98% 2 o 3 Powder, and paraffin liquid, according to the mass ratio of 100:1.5:20:20:4 (wherein SnO 2 The mass is 60g) to weigh and set aside. 2) Granulation: the above SnO 2 Powder, TiO 2 Powder, Sb 2 o 3 Powder, Fe 2 o 3 The powder and paraffin are fully ground and mixed in a mortar, and the evenly mixed slurry is poured into a container, and aged at room temperature for 24 hours to obtain a mixed powder; 3) cold isostatic pressing: put the mixed powder into a mold 4) drying: put the prepared embryo body in an oven to dry; 5) pressureless sintering: put the embryo body into a muffle Sintering in the furnace, the sintering atmosphere is air, the sintering temperature is 1500°C, the holding time is 150min, and the tin dioxide electrode ceramic material is obtained by na...

Embodiment 2

[0044] 1) Ingredients: 10μm SnO with a purity of 99% in an electronic balance 2 Powder, 0.2μm TiO with a purity of 99% 2 Powder, 0.2μm Sb with a purity of 98% 2 o 3 Powder, 0.2μm Fe with a purity of 98% 2 o 3 Powder, and paraffin liquid, according to the mass ratio of 100:1.5:20:20:4 (wherein SnO 2 The mass is 60g) to weigh and set aside. 2) Granulation: the above SnO 2 Powder, TiO 2 Powder, Sb 2 o 3 Powder, Fe 2 o 3 The powder and paraffin are fully ground and mixed in a mortar, and the evenly mixed slurry is poured into a container, and aged at room temperature for 24 hours to obtain a mixed powder; 3) cold isostatic pressing: put the mixed powder into a mold 4) drying: put the prepared embryo body in an oven to dry; 5) pressureless sintering: put the embryo body into a muffle Sintering in the furnace, the sintering atmosphere is air, the sintering temperature is 1500°C, the holding time is 150min, and the tin dioxide electrode ceramic material is obtained by nat...

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Abstract

The invention discloses a tin dioxide modified ceramic electrode making method. The method comprises the steps of burdening, granulating, cold isostatic pressing, pressureless sintering and the like. The method has the advantages of simplicity, low cost and low apparatus requirement. A tubular tin dioxide electrode made through the method has a good stability and a high conductivity, has a higher oxygen evolution potential than general anodes, and has a greatly improved electrocatalysis performance.

Description

technical field [0001] The invention belongs to the technical field of electrocatalytic electrode preparation, in particular to a preparation method of a tin dioxide modified ceramic electrode. Background technique [0002] Electrochemical oxidation has attracted widespread attention due to its high efficiency, environmental compatibility and friendliness. Electrochemical oxidation mainly uses electrons as reagents, and does not need to add any chemical reagents, which avoids the secondary pollution caused by additional reagents. Electrochemical oxidation can generally be carried out at normal temperature and pressure, and is an energy-saving and environmentally friendly technology. . In the process of electrochemical oxidation treatment of organic wastewater, electrodes not only play the role of transmitting current, but also catalyze the degradation of organic matter. Therefore, the selection of electrode materials directly affects the degradation rate of organic matter....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/622C04B35/63C04B35/457
Inventor 韩卫清林娟顾芸刘晓东王连军孙秀云李健生沈锦优
Owner NANJING UNIV OF SCI & TECH
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