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A method for electrocatalytic oxidation of modified electrode to treat organic pollutant atrazine

A technology of electrocatalytic oxidation of organic pollutants, applied in the direction of oxidized water/sewage treatment, water pollutants, chemical instruments and methods, etc., can solve the problems of high electrocatalytic activity, unreliable bonding, and unfavorable deactivation, etc. High activity, low energy consumption, easy access to equipment

Active Publication Date: 2019-11-22
HUAINAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention solves matrix and TiO 2 Sometimes the combination between -NTs is not firm, TiO 2 - NTs resistance problem, and various existing SnO 2 To solve the problem of the conductivity and stability of the intermediate layer, a doped modified high-activity Y 2 o 3 -PbO 2 / SnO 2 -RuO 2 -Ce / Ni-TiO 2 -NTs / Ti modified electrode, which has the characteristics of high electrocatalytic activity, not suitable for deactivation during electrolysis, and corrosion resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This example uses Y 2 o 3 -PbO 2 / SnO 2 -RuO 2 -Ce / Ni-TiO 2 - A method for treating toxic organic pollutant atrazine by electrocatalytic oxidation of NTs / Ti modified electrode, the steps of which are as follows:

[0027] Step 1, preparing titanium dioxide nanotube arrays; increasing the specific surface area of ​​metal oxide deposition. The specific operation steps are:

[0028] 1) Pretreatment of titanium sheet: use titanium metal with a purity of 99.7% as the substrate, and polish the titanium substrate with 600, 1000, and 2000 mesh emery paper respectively, and then wash and remove the titanium substrate with secondary water, acetone, and absolute ethanol in sequence after polishing. Then put the degreased titanium substrate into the mixed solution of HF, ethylene glycol and deionized water to corrode for 10 minutes, and finally wash it ultrasonically with secondary water and absolute ethanol in sequence, and dry it at room temperature for use.

[0029] 2), pr...

Embodiment 2

[0037] This example uses Y 2 o 3 -PbO 2 / SnO 2 -RuO 2 -Ce / Ni-TiO 2 - A method for treating toxic organic pollutant atrazine by electrocatalytic oxidation of NTs / Ti modified electrode, the steps of which are as follows:

[0038] Step 1, preparing titanium dioxide nanotube arrays; increasing the specific surface area of ​​metal oxide deposition. The specific operation steps are:

[0039] 1) Pretreatment of titanium sheet: use titanium metal with a purity of 99.7% as the substrate, and polish the titanium substrate with 600, 1000, and 2000 mesh emery paper respectively, and then wash and remove the titanium substrate with secondary water, acetone, and absolute ethanol in sequence after polishing. Then put the degreased titanium substrate into the mixed solution of HF, ethylene glycol and deionized water to corrode for 10 minutes, and finally wash it ultrasonically with secondary water and absolute ethanol in sequence, and dry it at room temperature for use.

[0040] 2), pr...

Embodiment 3

[0047] This example uses Y 2 o 3 -PbO 2 / SnO 2 -RuO 2 -Ce / Ni-TiO 2 - A method for treating toxic organic pollutant atrazine by electrocatalytic oxidation of NTs / Ti modified electrode, the steps of which are as follows:

[0048] Step 1, preparing titanium dioxide nanotube arrays; increasing the specific surface area of ​​metal oxide deposition. The specific operation steps are:

[0049] 1) Pretreatment of titanium sheet: use titanium metal with a purity of 99.7% as the substrate, and polish the titanium substrate with 600, 1000, and 2000 mesh emery paper respectively, and then wash and remove the titanium substrate with secondary water, acetone, and absolute ethanol in sequence after polishing. Then put the degreased titanium substrate into the mixed solution of HF, ethylene glycol and deionized water to corrode for 10 minutes, and finally wash it ultrasonically with secondary water and absolute ethanol in sequence, and dry it at room temperature for use.

[0050] 2), pr...

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PUM

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Abstract

The invention discloses a method for treating poisonous and organic pollutant atrazine through a modified electrode in an electrocatalytic oxidation mode and belongs to the field of electrode electrocatalytic application. A titanium dioxide nanotube array (TiO2-NTs) is prepared, and layers of Ni are electroplated at the bottom of a substrate Ti and the bottom of TiO2NT; titanium dioxide nanotubes are coated with an intermediate layer SnO2-RuO2-Ce, components of deposition liquid are 18g of SnC14.5H2O, 0.1g of RuCl3, 0.7g of Ce(NO3)3.6H2O and 0.1g of sodium dodecyl benzene sulfonate, 2ml of HCl(37%) is dissolved in 100ml of an ethanol solution, and current density is 20mA / cm<2>; electro-depositing is carried out for 30 minutes at normal temperature, then the nanotubes are put into a muffle furnace of 500 DEG C to be calcined for 60 minutes, so that the intermediate layer SnO2-RuO2-Ce is obtained, and the lead dioxide and rare earth Y2O3 modified titanium dioxide nanotube electrode is prepared; the poisonous and organic pollutant atrazine is treated in the electrcatalytic oxidation mode. The self-made Y2O3-PbO2 doped modified high-activity Y2O3-PbO2 / SnO2-RuO2-Ce / Ni-TiO2-NTs / Ti modified electrode is adopted as an anode, the electrode is not suitable for inactivation in the electrolytic process, corrosion resistance of the electrode is good, and selectivity is good during degrading.

Description

technical field [0001] The invention relates to the application field of electrocatalytic degradation, using Y 2 o 3 -PbO 2 / SnO 2 -RuO 2 -Ce / Ni-TiO 2 - A method for treating toxic organic pollutant atrazine by electrocatalytic oxidation of NTs / Ti modified electrode. Background technique [0002] Water is an indispensable natural resource for human survival and development, and its function is irreplaceable by other social resources. my country's per capita annual water volume and per mu water volume only account for 1 / 4 and 2 / 3 of the world's average, so my country is listed as one of the 13 water-poor countries. Since the reform and opening up, my country's social and economic development has been very rapid. At the same time, a large amount of industrial wastewater has been produced, especially the wastewater discharged from factories such as chemicals, pesticides, pharmaceuticals and dyes, which has caused destructive pollution to the environment. These industrial...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461C02F1/72C02F101/36C02F101/38
CPCC02F1/46109C02F1/4672C02F2001/46142C02F2101/36C02F2101/38
Inventor 徐迈王凤武王智成魏亦军朱传高方文彦王灿永
Owner HUAINAN NORMAL UNIV
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