a kind of na + doped g-c 3 no 4 Composite material, electrochemical sensor, preparation method and application thereof

A composite material, g-c3n4 technology, applied in Na+ doped g-C3N4 composite material, electrochemical sensor and its preparation field, can solve the problems of low surface utilization rate, hydrophobic surface can not store charge, etc., to achieve easy operation and high efficiency The effect of electrochemical detection and electrochemical signal enhancement

Active Publication Date: 2021-06-04
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the low surface utilization of carbon paper and the inability to store charges on the hydrophobic surface, carbon paper itself cannot be directly used as a sensor material, so it is necessary to improve the three-dimensional structure of carbon paper, or Introduce suitable materials on the surface

Method used

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  • a kind of na <sup>+</sup> doped g-c <sub>3</sub> no <sub>4</sub> Composite material, electrochemical sensor, preparation method and application thereof
  • a kind of na <sup>+</sup> doped g-c <sub>3</sub> no <sub>4</sub> Composite material, electrochemical sensor, preparation method and application thereof
  • a kind of na <sup>+</sup> doped g-c <sub>3</sub> no <sub>4</sub> Composite material, electrochemical sensor, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 60mg of g-C 3 N 4 The powder was dispersed in 80 mL of deionized water, 15 mL of 4M NaOH solution was added dropwise thereto, and the resulting mixture was kept stirring at room temperature for 24 h. After the reaction, wash with deionized water and collect Na + doped g-C 3 N 4 product, and finally put the product into an electric blast drying oven to dry to obtain Na + doped g-C 3 N 4 Powder, recorded as NC-15.

Embodiment 2

[0029] Weigh 60mg of g-C 3 N 4 The powder was dispersed in 80 mL of deionized water, then 20 mL of 4M NaOH solution was added dropwise thereto, and the resulting mixture was placed at room temperature and stirred continuously for 24 h. After the reaction, wash with deionized water and collect Na + doped g-C 3 N 4 product, and finally put the product into an electric blast drying oven to dry to obtain Na + doped g-C 3 N 4 Powder, recorded as NC-20.

Embodiment 3

[0031]Weigh 60mg of g-C 3 N 4 The powder was dispersed in 80 mL of deionized water, and then 25 mL of 4M NaOH solution was added dropwise thereto, and the resulting mixture was placed at room temperature and stirred continuously for 24 h. After the reaction, wash with deionized water and collect Na + doped g-C 3 N 4 product, and finally put the product into an electric blast drying oven to dry to obtain Na + doped g-C 3 N 4 Powder, recorded as NC-25.

[0032] Na + doped g-C 3 N 4 Performance Testing:

[0033] 1. Analysis of Na + doped g-C 3 N 4 Morphological characteristics of composite materials:

[0034] figure 1 for Na + doped g-C 3 N 4 Scanning transmission electron microscope (SEM) image; From the morphology and structure of SEM, it can be clearly seen that Na + doped g-C 3 N 4 The powder presents an irregular massive structure, about 2–6 μm.

[0035] figure 2 for Na + doped g-C 3 N 4 The transmission electron microscope (TEM) picture; It can be...

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Abstract

The inventor provides a kind of Na + doped g‑C 3 N 4 Composite material, chemical sensor and its preparation method, application, its preparation method comprises the following steps: g-C 3 N 4 The powder was added into deionized water, ultrasonicated for 50-70min to obtain the first suspension; NaOH solution was added to the first suspension, and stirred continuously at room temperature for 22-25h to obtain the second suspension; the second suspension Perform solid-liquid separation, wash the precipitate with deionized water, and dry the precipitate to obtain Na + doped g‑C 3 N 4 powder. Na constructed by the present invention + doped g‑C 3 N 4 Electrochemical sensor, under the optimal experimental conditions, the electrochemical sensor can detect the concentration range of phenol from 1 to 110μM, the lowest detection limit concentration is 0.03μM (S / N=3), and the sensitivity is 1.029μAμM ‑1 .

Description

technical field [0001] The invention relates to the field of electrochemistry, in particular to a Na + doped g-C 3 N 4 Composite material, electrochemical sensor and its preparation method and application. Background technique [0002] In recent years, phenolic substances are often used as fungicides, insecticides, herbicides and synthetic intermediates of dyes, etc., and are widely used in many fields. Although it has a wide range of uses, phenol is toxic, and when discharged into the environment, this toxicity is difficult to be degraded by microorganisms, which will bring certain harm to the ecosystem and eventually pose a threat to people's health. Therefore, the quantitative detection of phenol is particularly important. So far, many analytical methods, such as gas chromatography, high performance liquid chromatography, spectrophotometry and capillary electrophoresis, have been used to detect phenol. Among the many methods for detecting phenol, the electrochemical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30G01N27/48C01B21/082
CPCC01B21/0605G01N27/308G01N27/48
Inventor 宋旭春宋冰冰黄宗益杨唐
Owner FUJIAN NORMAL UNIV
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