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Pt(IV)-5-CN-PADAT complex/modified electrode thereof/electrochemical sensor and application thereof

A -5-CN-PADAT, 5-CN-PADAT technology, applied in the field of Pt-5-CN-PADAT complex/modified electrode/electrochemical sensor field, can solve the problems of refractory degradation, high toxicity and the like, Achieve the effect of preventing agglomeration, large specific surface area, and increasing the thickness of the electrical layer

Active Publication Date: 2020-03-27
XIAN UNVERSITY OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is highly toxic and difficult to degrade, and is a recognized carcinogen

Method used

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  • Pt(IV)-5-CN-PADAT complex/modified electrode thereof/electrochemical sensor and application thereof
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  • Pt(IV)-5-CN-PADAT complex/modified electrode thereof/electrochemical sensor and application thereof

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Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1: Pt(IV)-5-CN-PADAT complex

[0031] (1) Preparation of basic solution, platinum standard solution: 5×10 -3 mol / L, accurately weigh 0.2400 g potassium chloroplatinate in a 25mL beaker, dissolve in water, transfer to a 100 mL volumetric flask, dilute to the mark with water, and shake well; HAc-NaAc buffer solution: 0.25 mol / L of HAc- NaAc buffer solution was adjusted to pH=4.60 on the pH meter; ethanol solution of 5-CN-PADAT: 1.0×10 -2 mol / L;

[0032] (2) Preparation of 5-CN-PADAT complex, first add 1 mL of 5×10 -3 mol / L platinum standard solution, then add 2.0 mL pH=4.60 HAc-NaAc buffer solution and 2 mL 1.0×10 -2 mol / L ethanol solution of 5-CN-PAD AT, heated in a boiling water bath for 18 min, cooled to room temperature under running water, made to volume with water, and shaken to obtain 5×10 -4 mol / L Pt(IV)-5-CN-PADAT complex.

Embodiment 2

[0033] Embodiment 2: Pt(IV)-5-CN-PADAT complex

[0034] (1) Preparation of basic solution, platinum standard solution: 5×10 -2 mol / L, accurately weigh 2.4000 g of potassium chloroplatinate in a 25 mL beaker, dissolve in water, transfer to a 100 mL volumetric flask, dilute to the mark with water, and shake well; HAc-NaAc buffer solution: 0.20 mol / L of HAc -NaAc buffer solution was adjusted to pH=3.6 on the pH meter; ethanol solution of 5-CN-PADAT: 1.0×10 -3 mol / L;

[0035] (2) Preparation of Pt(IV)-5-CN-PADAT complex: Add 1 mL of 5×10 -2 mol / L platinum standard solution, then add 2.0 mL pH=3.6 HAc-NaAc buffer solution and 2 mL 1.0×10 -3 mol / L ethanol solution of 5-CN-PADAT, heated in a boiling water bath for 45 min, cooled to room temperature under running water, made to volume with water, and shaken to obtain 5.0×10 -3 mol / L Pt(IV)-5-CN-PADAT complex.

Embodiment 3

[0036] Embodiment 3: Pt(IV)-5-CN-PADAT complex

[0037] (1) Preparation of basic solution, platinum standard solution: 5×10 -2 mol / L, accurately weigh 2.4000g of potassium chloroplatinate in a 25 mL beaker, dissolve it in water, transfer it to a 100 mL volumetric flask, dilute to the mark with water, and shake well; HAc-NaAc buffer solution: 0.23mol / L of HAc -NaAc buffer solution was adjusted to pH=4.0 on the pH meter; ethanol solution of 5-CN-PADAT: 1.0×10 -2 mol / L;

[0038] (2) Preparation of Pt(IV)-5-CN-PADAT complex: add 1 mL5×10-2 mol / L platinum standard solution, then add 2.0 mL pH=4.0 HAc-NaAc buffer solution and 2 mL 1.0×10 -2 mol / L ethanol solution of 5-CN-PADAT, heated in a boiling water bath for 25min, cooled to room temperature under running water, made to volume with water, and shaken to obtain 5.0×10 -3 mol / L Pt(IV)-5-CN-PADAT complex.

[0039] The formation principle of the complex Pt(IV)-5-CN-PADAT: Platinum is located in Group VIII of the sixth cycle, and...

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Abstract

The invention discloses a Pt(IV)-5-CN-PADAT complex / modified electrode thereof / electrochemical sensor and application thereof. The preparation method of the Pt(IV)-5-CN-PADAT complex comprises the following steps: sequentially adding an acetic acid and sodium acetate mixed solution and an ethanol solution of 5-CN-PADAT into a potassium chloroplatinate solution, heating in a boiling water bath for25 minutes, and cooling to room temperature to obtain the Pt(IV)-5-CN-PADAT complex; polishing an initial glassy carbon electrode, ultrasonically cleaning the glassy carbon electrode for 7 minutes byusing nitric acid, absolute ethyl alcohol and ultrapure water in a ratio of 1: 1 in sequence, and airing the glassy carbon electrode; then putting the electrode into a Pt(IV)-5-CN-PADAT complex and aKCl solution, and scanning for 40 circles by adopting a first cyclic voltammetry (CV) at a scanning speed of 0.02 v / s and a voltage of -0.35 v to-1.35 v to form a treated electrode; and taking out theelectrode, washing with water, and naturally airing to obtain the PtNPs-5-CN-PADAT modified glassy carbon electrode. And the electrode is used for HQ detection. By optimizing the influence of experimental parameters on the performance of the sensor, a new electrochemical analysis method of HQ is established. The modified electrode provided by the method is simple to prepare, shows good stabilityand reproducibility, and can be used for detecting HQ in a sample.

Description

technical field [0001] The invention belongs to the field of electrochemistry, and specifically relates to a Pt(IV)-5-CN-PADAT complex / modified electrode / electrochemical sensor and application thereof. Background technique [0002] Hydroquinone (HQ) is an important chemical raw material, which is widely used in the fields of dyes, preservatives and chemical intermediates. However, it is highly toxic and difficult to degrade, and is a recognized carcinogen. Accidental ingestion can cause tinnitus, dizziness, dyspnea and other symptoms. Therefore, it is of great practical significance to study the rapid detection of HQ. At present, the main methods for determining HQ are: photometric method, fluorescence method, high performance liquid chromatography, and electrochemical analysis method. Because it is easy to oxidize and has good electrochemical activity, many electrochemical determination methods are used. Nanomaterial-modified electrodes have the advantages of small pola...

Claims

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Application Information

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IPC IPC(8): G01N27/30G01N27/48
CPCG01N27/308G01N27/48
Inventor 霍燕燕韩权杨晓慧
Owner XIAN UNVERSITY OF ARTS & SCI