An electrochemiluminescent method for detecting catechol

A catechol and electrochemical technology, which is applied in the field of electrochemiluminescence for detecting catechol, can solve the problems of long test time and harsh experimental operating conditions of catechol, and achieves high and stable electrochemiluminescence intensity. The effect of good sex and fast response

Active Publication Date: 2021-08-24
CHANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a highly sensitive, simple, fast and accurate detection method for catechol, which mostly relies on large-scale experimental instruments and has harsh experimental operating conditions and long test time. Preparation method of diphenol electrochemical luminescence sensor

Method used

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  • An electrochemiluminescent method for detecting catechol
  • An electrochemiluminescent method for detecting catechol
  • An electrochemiluminescent method for detecting catechol

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Embodiment

[0032] (1) UiO-66-g-C 3 N 4 / Preparation of GC modified electrodes

[0033] 0.233g of ZrCl 4(1.0 mmol) and 0.166 g of 1,4-phthalic acid (1.0 mmol) were dissolved in 50 mL of DMF, and the solution was transferred to a 100 mL Teflon-lined stainless steel autoclave. Place in an oven at 120°C for 24 hours. After natural cooling, the obtained product was centrifuged and washed with absolute ethanol to obtain the UiO-66 product, which was dried at 60° C. for 12 hours for use.

[0034] Put 10g of urea in a crucible and heat it in a muffle furnace at 5°C min -1 The heating rate was heated to 550 ° C and reacted for 4 hours. After cooling to room temperature, 0.1 g of the obtained g-C 3 N 4 Disperse in 100 mL of water and sonicate for 10 h, then centrifuge the mixture several times at 10,000 rpm to remove unstripped g-C 3 N 4 , the supernatant was dried to obtain nano g-C 3 N 4 . Take UiO-66 and g-C respectively 3 N 4 Thoroughly mix and grind to get UiO-66-g-C 3 N 4 , ...

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Abstract

The invention provides an electrochemiluminescence method for detecting catechol, and specifically belongs to the field of electrochemiluminescence detection. The operation process includes: (1) UiO‑66 and g‑C 3 N 4 Preparation of composite materials; (2) UiO‑66‑g‑C 3 N 4 Modified on the surface of glassy carbon (GC) electrode to prepare an electrochemiluminescent sensor, namely UiO‑66‑g‑C 3 N 4 / GC chemically modified electrode; (3) detection of catechol by electrochemiluminescence. where UiO‑66‑g‑C 3 N 4 The / GC chemically modified electrode is used as the working electrode, the Ag / AgCl electrode is used as the reference electrode, and the platinum electrode is used as the auxiliary electrode to form a traditional three-electrode system. The detection range of this method is 1.0x10 ‑11 ~5.0x10 ‑6 mol / L, the lowest detection limit is 9.0x10 ‑12 mol / L. The method for detecting catechol of the invention has high sensitivity, is simple and fast.

Description

technical field [0001] The invention relates to a method for detecting catechol electrochemiluminescence, in particular to a method using UiO-66 and g-C 3 N 4 Modified glassy carbon electrode, namely UiO-66-g-C 3 N 4 The / GC modified electrode is used as the working electrode, and the electrochemiluminescence analysis method is used to quantitatively detect catechol in the water sample. Background technique [0002] Catechol, also known as catechol, is an important pollutant in medicine, food and the environment. Among them, phenolic industrial wastewater is one of the most harmful industrial wastewater in the world today, and it is also the most concerned issue in water pollution treatment and control. . Therefore, it is of great significance to establish a highly sensitive, simple and quick method for the determination of catechol. At present, the commonly used detection methods mainly include fluorescence photometry, liquid chromatography, gas chromatography, spectro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/76G01N27/30G01N27/48
CPCG01N21/76G01N27/308G01N27/48
Inventor 单晓梦单学凌陈智栋
Owner CHANGZHOU UNIV
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