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Preparation method and applications of clay modified electrode

A technology for modifying electrodes and clay, applied in the field of electrochemistry, can solve the problems of poor thermal stability, difficult operation control, etc., and achieve the effects of low price, large quantity, abundant resources, and easy control of operation steps.

Active Publication Date: 2018-06-15
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the existing modified clay technology has fatal problems such as difficult operation control and poor thermal stability. How to overcome these problems and prepare clay-modified electrodes with excellent performance is one of the keys to promote its application.

Method used

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  • Preparation method and applications of clay modified electrode
  • Preparation method and applications of clay modified electrode
  • Preparation method and applications of clay modified electrode

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Embodiment Construction

[0040] Cu 2 The preparation method of O / sepiolite composite, the steps are as follows:

[0041] Add 20g of sepiolite into 2000ml of deionized water, keep stirring for 3h and soak overnight. The next day, add a little ammonium carbonate solid to promote sedimentation, then filter the resulting precipitate with suction, wash it with deionized water several times, dry it at 90°C for 20 hours, and grind it thoroughly to 100 mesh to obtain pure sepiolite (referred to as Sep). .

[0042] Take 10g of purified sepiolite and add it to 200mL NaCl (1mol L -1 ) solution, sodiumized at 70°C for 2h, left at room temperature for 24h, vacuum filtered with deionized water, and washed until no Cl - Existence (with 0.1M AgNO 3 solution detection), dried at 110°C for 20 hours, and fully ground to 100 mesh to obtain sodium sepiolite (denoted as Na / sep).

[0043] in TiCl 4 Slowly add aqueous HCl solution (6mol / L) to the solution to achieve a molar ratio of [Ti] / [H+]=1:4, followed by stirring ...

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Abstract

The invention relates to a preparation method and applications of a clay modified electrode. The preparation method comprises following steps: sodium chloride is adopted for sodium modification of purified meerschaum; TiO2 is adopted for modification of meerschaum obtained via sodium modification; cuprous oxide nanometer particle assembling is carried out so as to prepare a cuprous oxide meerschaum composite; the cuprous oxide meerschaum composite is adopted to modify a clay electrode and detect H2O2. The preparation method possesses following advantages: the using amount of the composite material used for modifying the electrode is extremely low; the operation steps are convenient to control; the obtained modified electrode possesses excellent stability and electrochemical performance.

Description

technical field [0001] The invention relates to a preparation method and application of a clay-modified electrode. The prepared clay-modified electrode has high stability and good catalytic activity to hydrogen peroxide; it belongs to the field of electrochemistry. technical background [0002] Hydrogen peroxide (H 2 o 2 ) is an important chemical substance in the biological system, which seriously affects the metabolism and cell function, and the high concentration of H 2 o 2 It can even cause cell death, which poses a greater threat to human physical and mental health. However, excessive use of H 2 o 2 The phenomenon of illegally adding industrial hydrogen peroxide is becoming more and more serious, resulting in frequent occurrence of food poisoning incidents. With the improvement of people's health awareness, the hazards of residual hydrogen peroxide have gradually entered people's field of vision, and have attracted widespread attention from the society. Therefor...

Claims

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Application Information

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IPC IPC(8): G01N27/333G01N27/30
CPCG01N27/30G01N27/333
Inventor 唐爱东闫鹏
Owner CENT SOUTH UNIV
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