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Application of g-C3N4 nanosheet in detection of VB12

A technology of g-c3n4 and 1.g-c3n4 is applied in the field of chemical detection to achieve the effect of simple and convenient operation and high sensitivity

Pending Publication Date: 2020-06-05
NORTHWEST NORMAL UNIVERSITY
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  • Claims
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Problems solved by technology

However, so far, carbon nitride nanoparticles have not been applied to efficiently detect VB 12

Method used

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  • Application of g-C3N4 nanosheet in detection of VB12
  • Application of g-C3N4 nanosheet in detection of VB12
  • Application of g-C3N4 nanosheet in detection of VB12

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Embodiment 1

[0026] (1) g-C 3 N 4 Preparation of nanosheet materials

[0027] Put 10g of melamine powder into a 50ml alumina crucible, calcinate in a muffle furnace at 550°C for 4h, the heating rate is 2.5°C / min, and after annealing, a yellow bulk g-C is obtained 3 N 4 Material. The prepared bulk g-C 3 N 4 (1g) mixed with 500ml water and ultrasonicated for 16h, the dispersion was centrifuged at 3000rpm for 10min to remove agglomerates, and the supernatant was taken at 8000rpm to obtain white exfoliated g-C 3 N 4 Nanosheets. Such as figure 1 As shown, the prepared material g-C 3 N 4 It is flaky.

[0028] (2) VB 12 detection

[0029] ①. Grind and polish the glassy carbon electrode with 0.3 μm and 0.05 μm aluminum oxide powder in turn, then rinse with double distilled water and set aside.

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Abstract

The invention discloses an application of a g-C3N4 nanosheet in detection of VB12, the VB12 is detected by adopting an electrochemical luminescence method, and the g-C3N4 nanosheet is used as an electrochemical luminescence reagent. The invention also discloses a method for detecting VB12 by an electrochemical luminescence method. When the concentration of the VB12 is gradually increased when theconcentration of the VB12 is 0.01-105 [mu] mol / L, the ECL intensity of the g-C3N4 nanosheet / K2S2O8 system and the concentration of the VB12 form a linear relationship, and the lowest detection line is1.2 nmol / L. Compared with an existing VB12 detection method, the detection method is simple and convenient in operation process and high in sensitivity.

Description

technical field [0001] The invention belongs to the technical field of chemical detection methods, in particular to g-C 3 N 4 Nanosheets in the detection of VB 12 in the application. Background technique [0002] Carbon nitride material is a polymer with a long history. In 1834, prepared by Berzelius, the polymer derivative "Melon" of carbon nitride named by Liebig has appeared. In 1989, Liu and Cohen predicted β-C through theoretical calculation 3 N 4 Hardness comparable to diamond. Subsequently, Teter and Hemley theoretically proposed five different structural models of carbon nitride, among which, g-C 3 N 4 It is the most stable at normal temperature and pressure, and its density is lower than other superhard phase materials. Due to the excellent performance and broad application prospects of superhard carbon nitride materials, g-C 3 N 4 As a precursor for the synthesis of superhard carbon nitride, it has been widely studied by scientific researchers. [0003]...

Claims

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Application Information

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IPC IPC(8): G01N21/76G01N27/26
CPCG01N21/76G01N27/26
Inventor 卢小泉张鹏萍赵睿孙露刘秀娟王菊霞赵雅琪何耀荣
Owner NORTHWEST NORMAL UNIVERSITY
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