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Manufacturing method of electrode for electrocatalytic degradation of nitrobenzene and product and application thereof

A technology of electrocatalytic degradation and preparation method, applied in the field of catalytic environmental protection, can solve the problems of high cost of precious metal decoration, secondary pollution of metal dissolution, and hindering large-scale industrial application, etc.

Pending Publication Date: 2022-02-15
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there is some improvement in removal / degradation efficiency, on the one hand, heavy metal ions modify Ti / Sb-SnO 2 The resulting metal dissolution is easy to cause secondary pollution, on the other hand, the high cost of using noble metal modification hinders large-scale industrial application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of electrode for electrocatalytic degradation of nitrobenzene is made according to the following steps:

[0021] (1) Pretreatment of titanium sheets: Wash titanium sheets with a thickness of 0.1mm and a size of 2×3 cm with 40% sodium hydroxide solution and 6M HCl at 90°C for 1 hour, then wash with deionized water for 3 times, and dry naturally Get pre-treated titanium sheet, spare;

[0022] (2) Prepare a mixed solution of precursor solutions containing antimony Sb and tin Sn: respectively configure the concentration of 1mol / L SnCl 4 ˙5H 2 O n-butanol solution, 1mol / L SbCl 3 n-butanol solution; according to the doping ratio of antimony, take SnCl 4 ˙5H 2 O n-butanol solution 10ml, SbCl 3 0.2 ml of n-butanol solution, ultrasonically mixed for 5 min to obtain a mixed solution;

[0023] (3) Soak the graphite felt with a thickness of 2 mm and a size of 2×3 cm in the mixed solution of the precursor solution containing antimony and tin for 10 min to obtain the gra...

Embodiment 2

[0027] A kind of electrode that is used for electrocatalytic degradation of nitrobenzene, is similar to embodiment 1 step, is made according to the following steps:

[0028] (1) Pretreatment of titanium sheets: Wash the titanium sheets with a thickness of 0.1mm and a size of 2×3 cm with 40% sodium hydroxide solution and 6M HCl at 90°C for 1 hour, then wash with deionized water for 3 times, and dry naturally Get pre-treated titanium sheet, spare;

[0029] (2) Prepare a mixed solution of precursor solutions containing antimony Sb and tin Sn: respectively configure the concentration of 1mol / L SnCl 4 ˙5H 2 O n-butanol solution, 1mol / L SbCl 3 n-butanol solution; according to the doping ratio of antimony, take SnCl 4 ˙5H 2 O n-butanol solution 10ml, SbCl 3 0.5 ml of n-butanol solution, ultrasonicated for 5 min to make the mixture uniform, and a mixed solution was obtained;

[0030] (3) Soak graphite felt with a thickness of 3 mm and a size of 2×3 cm in the above mixed solution...

Embodiment 3

[0034] A kind of electrode that is used for electrocatalytic degradation of nitrobenzene, is similar to embodiment 1 step, is made according to the following steps:

[0035] (1) Pretreatment of titanium sheets: Wash titanium sheets with a thickness of 0.2mm and a size of 2×3 cm with 40% sodium hydroxide solution and 6M HCl at 90°C for 1 hour, then wash with deionized water for 3 times, and dry naturally Get pre-treated titanium sheet, spare;

[0036] (2) Prepare a mixed solution of precursor solutions containing antimony Sb and tin Sn: respectively configure the concentration of 1mol / L SnCl 4 ˙5H 2 O n-butanol solution, 1mol / L SbCl 3 Butanol solution; take SnCl 4 ˙5H 2 O n-butanol solution 10ml, SbCl 3 1 ml of n-butanol solution, mixed evenly by ultrasonication for 5 min, to obtain a mixed solution;

[0037] (3) Soak a graphite felt with a thickness of 2 mm and a size of 2×3 cm in the above mixed solution for 30 minutes to obtain a graphite felt with a precursor solution...

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Abstract

The invention discloses a manufacturing method of an electrode for electrocatalytic degradation of nitrobenzene and a product and application thereof. The manufacturing method comprises the following steps: preparing a precursor solution containing antimony Sb and tin Sn; soaking the graphite felt in a precursor solution containing antimony and tin; paving the graphite felt adsorbed with the antimony and tin-containing precursor solution on a titanium sheet substrate, and preparing the carbon-modified antimony-doped tin dioxide Sb-SnO2 electrode material on the surface of the titanium sheet by using a thermal decomposition method. The electrode obtained through the method shows high nitrobenzene electrochemical degradation activity; on the one hand, the charge transfer capacity of the surface of Sb-SnO2 is effectively improved due to the fact that the carbon-based material has high electron transmission capacity; on the other hand, the surface structure of Sb-SnO2 is optimized and reaction active sites are increased due to the fact that the carbon material serves as a reaction substrate.

Description

technical field [0001] The invention belongs to the technical field of catalysis and environmental protection, and in particular relates to a method for making an electrode for electrocatalytically degrading nitrobenzene and its product and application. Background technique [0002] Nitrobenzene compounds are important raw materials or intermediates in industrial production, and are widely used in many fields such as chemical industry, dyestuff, medicine, pesticide and organic synthesis. Nitrobenzene is highly toxic. Inhalation of a large amount of vapor or a large amount of skin contamination can cause acute poisoning. Nitrobenzene has extremely high stability in water. Because its density is higher than that of water, nitrobenzene that enters the water body will sink to the bottom of the water and remain unchanged for a long time. And because it has a certain solubility in water, the water pollution caused by it will last for a long time, and nitrobenzene is difficult to ...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F101/38
CPCC02F1/46109C02F2001/46133C02F2101/38
Inventor 崔大祥马玉丽赵昆峰童琴陈晓彤
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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