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Electrochemical sensor for rapid trace detection of phloroglucinol, preparation method and application thereof

A phloroglucinol and electrochemical technology, which is applied in the field of electroanalytical chemistry and electrochemical sensors, can solve problems such as complex detection steps, and achieve the effects of simple operation, simple preparation, and fast analysis speed

Inactive Publication Date: 2018-03-16
XINYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the detection of phloroglucinol in the above-mentioned prior art, which is often completed by means of expensive instruments, and the detection steps are complicated, the present invention provides a Cu-based 2 O hollow submicrospheres@graphene oxide (Cu 2 Preparation method and application of electrochemical sensor for rapid detection of phloroglucinol with trace amount of O hollow submicrosphere @GO), this method can effectively reduce the interference of complex matrix components and obtain satisfactory results

Method used

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  • Electrochemical sensor for rapid trace detection of phloroglucinol, preparation method and application thereof
  • Electrochemical sensor for rapid trace detection of phloroglucinol, preparation method and application thereof
  • Electrochemical sensor for rapid trace detection of phloroglucinol, preparation method and application thereof

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preparation example Construction

[0039] The preparation method of the electrochemical sensor for fast detection of trace amount of phloroglucinol comprises the following steps:

[0040] Step ① Cu 2 Synthesis of O hollow submicrospheres@GO:

[0041] Analytical grade (AR) copper acetate monohydrate (Cu(CH 3 COO) 2 ·H2 O), ammonia (NH 3 ·H 2 O, 25−28%) and hydroxylamine hydrochloride (NH 2 OH·HCl, 98.5%) were purchased from Sinopharm Chemical Reagent Co., Ltd., and used directly without purification; the specific synthesis steps are as follows: 0.199 g Cu(CH 3 COO) 2 ·H 2 O (1 mmol) and 0.069 g NH 2 OH·HCl (1 mmol) was dissolved in 60 mL of secondary water and stirred at room temperature for 10 min; then 0.35 mL of NH 3 ·H 2 O, seal the reaction tank immediately after the blue solution is formed, and ultrasonicate for 5 min at room temperature, and the formation of a brick red suspension can be observed; the suspension is centrifuged, and the obtained product is washed several times with secondary wate...

Embodiment 1

[0058] Electrochemical sensors for the rapid detection of phloroglucinol at trace levels, such as figure 1 Shown, comprise working electrode, reference electrode, auxiliary electrode; It is characterized in that: described working electrode is that the surface is drop-coated with very high electroactive Cu 2 Glassy carbon electrode of O hollow submicrosphere@GO modified membrane;

[0059] The preparation method of the electrochemical sensor for fast detection of trace amount of phloroglucinol comprises the following steps:

[0060] Step ① Cu 2 Synthesis of O hollow submicrospheres@GO:

[0061] Analytical grade (AR) copper acetate monohydrate (Cu(CH 3 COO) 2 ·H 2 O), ammonia (NH 3 ·H 2 O, 25−28%) and hydroxylamine hydrochloride (NH 2 OH·HCl, 98.5%) were purchased from Sinopharm Chemical Reagent Co., Ltd. and used directly without purification. The specific synthesis steps are as follows: 0.199 g Cu(CH 3 COO) 2 ·H 2 O (1 mmol) and 0.069 g NH 2 OH·HCl (1 mmol) was di...

Embodiment 2

[0078] Electrochemical sensors for the rapid detection of phloroglucinol at trace levels, such as figure 1 Shown, comprise working electrode, reference electrode, auxiliary electrode; It is characterized in that: described working electrode is glassy carbon substrate 2 surfaces drop-coated with very high Cu of electroactivity 2 O the glassy carbon electrode of the hollow submicrosphere@GO modified film 1; the glassy carbon substrate 2 is provided with an insulating layer 3 and an electrode lead 4;

[0079] The preparation method of the electrochemical sensor for fast detection of trace amount of phloroglucinol comprises the following steps:

[0080] Step ① Cu 2 Synthesis of O hollow submicrospheres@GO:

[0081] Analytical grade (AR) copper acetate monohydrate (Cu(CH 3 COO) 2 ·H 2 O), ammonia (NH 3 ·H 2 O, 25−28%) and hydroxylamine hydrochloride (NH 2 OH·HCl, 98.5%) were purchased from Sinopharm Chemical Reagent Co., Ltd. and used directly without purification. The spe...

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Abstract

The invention relates to the fields of electrochemical sensor and electroanalytical chemistry, and particularly discloses an electrochemical sensor for trace rapid detection of phloroglucinol and a preparation method thereof; the electrochemical sensor has the advantages of high determination sensitivity on phloroglucinol, good selectivity, simple operation, low cost and reliable results. The electrochemical sensor includes a working electrode, a reference electrode and an auxiliary electrode; the working electrode is a glassy carbon electrode having the surface dropwise coated with a high-electrical-activity Cu2O hollow submicrospheres@GO modified film. The prepared electrochemical sensor is successfully applied to detection of phloroglucinol in a water body.

Description

technical field [0001] The invention relates to the fields of electroanalytical chemistry and electrochemical sensors, specifically a Cu-based 2 O hollow submicrosphere@graphene oxide electrochemical sensor for rapid detection of phloroglucinol in trace amounts and its preparation method and application. Background technique [0002] Phloroglucinol widely exists in natural polyphenolic compounds in some higher plants, and it is one of the important pollutants in leather industry and food wastewater. Phloroglucinol can be used as a biological reagent, dye, and can cause vomiting, hypothermia, weakness, coma, suffocation, and even death. Long-term exposure can cause anemia, jaundice, etc.; it is sensitizing to the skin and can cause eczema. [0003] Cu 2 O is a semiconductor material, which has been widely used in light energy conversion, superconducting materials, catalytic reactions, electrochemical sensors and other fields due to its unique electrical, optical and cataly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/48G01N27/30
CPCG01N27/308G01N27/48
Inventor 甘甜孙俊永吕珍赵爱霞史朝霞孙云云
Owner XINYANG NORMAL UNIVERSITY
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