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Preparation method and application of palladium doped graphite phase carbon nitride nano material

A graphitic carbon nitride and nanomaterial technology, applied in chemical instruments and methods, analysis by chemical reaction of materials, and material analysis by observing the influence on chemical indicators, etc., can solve the problem of low sensitivity and low activity. , unable to meet the needs and other problems, to achieve good stability

Inactive Publication Date: 2017-07-28
FUZHOU UNIV
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Problems solved by technology

Recently, some studies have also shown that graphitic carbon nitride (g-C 3 N 4 ) also has some catalytic activities similar to biological enzymes (horseradish peroxidase), which can be used for the construction of new technologies for visual biosensing and detection, but pure g-C 3 N 4 The activity of similar horseradish peroxidase is low, and the sensitivity is low when used to construct a visual biosensor, which cannot meet the needs

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  • Preparation method and application of palladium doped graphite phase carbon nitride nano material
  • Preparation method and application of palladium doped graphite phase carbon nitride nano material
  • Preparation method and application of palladium doped graphite phase carbon nitride nano material

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Embodiment

[0021] Pd-doped g-C with superstrong horseradish peroxidase-like catalytic activity 3 N 4 Nanomaterials (g-C 3 N 4 -PdNPs) The specific preparation steps are as follows:

[0022] (1) Preparation of graphitic carbon nitride (g-C 3 N 4 ) Nanosheets: Take 5g of melamine in an alumina crucible with a cover, place it in a muffle furnace, raise it from 25°C to 600°C at a heating rate of 2.3°C / min, and heat at 600°C for 2h, , to get lumpy g-C 3 N 4 . block g-C 3 N 4 Grind into powder, take 100mg powder g-C 3 N 4 Dissolve in 100mL deionized water and ultrasonicate for 10h. The obtained solution was centrifuged, and the supernatant light yellow liquid was taken to obtain g-C with a size of 70-200nm 3 N 4 nanosheet dispersion.

[0023] (2) Pd doped g-C 3 N 4 Nanomaterials (g-C 3 N 4 -PdNPs) preparation: take 5 ml of the g-C synthesized above with a size of 70–200 nm 3 N 4 Nanosheet dispersion was sonicated for 0.5 h, and 10 μL of 0.1M H 2 PdCl 4solution. Stir aga...

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Abstract

The invention discloses a preparation method and an application of a palladium doped graphite phase carbon nitride nano material. The preparation method comprises the following steps: firstly preparing a graphite phase carbon nitride nanosheet by utilizing melamine, and then adding a H2PdCl4 solution, a sodium borohydride solution and a sodium citrate solution, so that the Pd-doped g-C3N4 nano material is obtained. The prepared palladium doped graphite phase carbon nitride nano material has catalytic activity similar to a biological enzyme (horseradish peroxidase), a high-sensitivity visual rapid detection method for glucose in serum is established, the method has the advantages of high sensitivity (can reach 0.0735mM), strong specificity, strong matrix interference resistance, simplicity, speediness and low cost and can be applied to field rapid visual detection for trace amount of glucose molecules in a human body serum sample, and a rapid method is provided for clinical detection of diabetes.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a preparation method and application of a palladium-doped graphite phase carbon nitride nanomaterial. Background technique [0002] As a non-metallic semiconductor material, graphitic carbon nitride (g-C 3 N 4 ) has the advantages of non-toxicity, high chemical stability, simple preparation process, low price and visible light excitation. Hexagonal g-C 3 N 4 Each unit in the molecule is connected by N atoms, and the N atoms at the connection are sp 3 The form of hybridization forms a covalent bond with the C atoms in the adjacent 3 units, and the other 3 N atoms in the unit are sp 2 The hybridized form forms covalent bonds with adjacent C atoms. g-C 3 N 4 In the material, the N atom provides the basic conditions for the C-N-C six-membered ring conjugated system, and also provides a lone pair of electrons. So g-C 3 N 4 With a certain specifi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24G01N21/78
CPCG01N21/78B01J27/24B01J35/393
Inventor 付凤富金鑫
Owner FUZHOU UNIV
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