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Preparation method of glassy carbon electrode modified by reduced graphene-polyaniline-o-aminophenol-palladium complex and its application in detecting bromate in water

A technology of polyaniline o- and glassy carbon electrodes, applied in the direction of material electrochemical variables, etc., to achieve the effect of convenient operation, high-efficiency catalytic oxidation performance, and no secondary pollution

Inactive Publication Date: 2015-12-09
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, bromate is often inert on the surface of traditional electrode materials

Method used

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  • Preparation method of glassy carbon electrode modified by reduced graphene-polyaniline-o-aminophenol-palladium complex and its application in detecting bromate in water
  • Preparation method of glassy carbon electrode modified by reduced graphene-polyaniline-o-aminophenol-palladium complex and its application in detecting bromate in water
  • Preparation method of glassy carbon electrode modified by reduced graphene-polyaniline-o-aminophenol-palladium complex and its application in detecting bromate in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) Set up the three electrodes used in the electrolytic cell, with graphite oxide modified glassy carbon as the working electrode, platinum as the counter electrode, and saturated calomel as the reference electrode.

[0030] 2) Dissolve potassium monohydrogen phosphate and potassium dihydrogen phosphate in water to form a pH value of 2 to 3.0 and a concentration of 0.05mol dm -3 Phosphate buffer solution, through 0.5h nitrogen to drive away the oxygen in the solution.

[0031] 3) Put the three electrodes in step 1) into the prepared phosphate buffer solution to form a three-electrode system electrolytic cell, and perform cyclic voltammetry to reduce graphene oxide under the condition of a voltage of -2.0-1.0V.

[0032] 4) After the reduction, the working electrode was removed and washed several times with deionized water to obtain a reduced graphene-modified glassy carbon electrode.

[0033] 5) Re-set the electrolytic cell, the three electrodes are the working electrod...

Embodiment 2

[0043] 1) Set up the three electrodes used in the electrolytic cell, with graphite oxide modified glassy carbon as the working electrode, platinum as the counter electrode, and saturated calomel as the reference electrode.

[0044] Dissolve phosphoric acid and potassium hydroxide in water to form a pH value of 6.0 and a concentration of 2.0mol dm -3 Phosphate buffer solution, nitrogen gas was passed through for 1.0h to drive away the oxygen in the solution.

[0045] 3) Put the three electrodes in step 1) into the prepared phosphate buffer solution to form a three-electrode system electrolytic cell, and perform cyclic voltammetry to reduce graphene oxide under the condition of a voltage of -2.0-1.0V.

[0046] 4) After the reduction, the working electrode was removed and washed several times with deionized water to obtain a reduced graphene-modified glassy carbon electrode.

[0047] 5) Re-set the electrolytic cell, and among the three electrodes, use the reduced graphene-modifi...

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Abstract

The invention discloses a preparation method of a reduced graphene-polyaniline-o-aminophenol-palladium compound modified glassy carbon electrode and the application thereof in detection of bromate in a water body, which relate to the technical field of preparation of glassy carbon electrodes and applications thereof in detection of bromate in water bodies. According to the preparation method, a reduced graphene-polyaniline-o-aminophenol-palladium compound prepared through a three-step method is of a special nanorod structure; and under the help of graphene, the specific surface area of the compound is effectively increased; compared with a single material modified electrode, the compound modified electrode has better catalytic properties and can be used for detecting the bromate content of a water body.

Description

technical field [0001] The invention relates to the technical field of preparation of glassy carbon electrodes, and also relates to a method for detecting bromate in water bodies. Background technique [0002] Bromate ions are frequently detected in drinking water as a by-product of drinking water chlorination. In addition, bromate is also widely used in bread fermentation process. For example, "Hoigny, the process of ozonation of bromine-containing water to form bromate radicals: the interaction of ozone and hydroxyl radicals" published in "Environmental Science and Technology" No. 28, page 1234-1242 in 1994 "The content disclosed in the article is another example of the article "Bromate in chlorinated drinking waters: occurrence and implications for future regulation" published in "Environmental Science and Technology" No. 37, page 3104-3110 in 2003 What is disclosed. Studies have found that if people are exposed to excessive bromate for a long time, it will lead to dis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30G01N27/48
Inventor 张娅王宏归赵彦花温芳芳徐赛赛
Owner YANGZHOU UNIV
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