A kind of preparation method and application of palladium-doped graphite phase carbon nitride nanomaterial
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: 2019-05-10
FUZHOU UNIV
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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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[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 Dissolved in 100mL deionized water, ultrasonic 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 again at roo...
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Abstract
The invention discloses a preparation method and application of a palladium-doped graphite phase carbon nitride nanomaterial. The present invention first uses melamine to prepare graphite phase carbon nitride nanosheets, and then adds H 2 PdCl 4 solution, sodium borohydride solution and sodium citrate solution to prepare Pd doped g-C3N4 nanomaterials. The palladium-doped graphite-phase carbon nitride nanomaterial prepared by the present invention has catalytic activity similar to biological enzyme (horseradish peroxidase), and a highly sensitive visual rapid detection method of glucose in serum is established. The method has sensitivity It has the advantages of high (up to 0.0735mM), strong specificity, strong resistance to matrix interference, simplicity, speed and low cost. It can be used for on-site rapid visual detection of trace glucose molecules in human serum samples, providing a rapid clinical detection of diabetes. method.
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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IPC IPC(8): B01J27/24G01N21/78
CPCG01N21/78B01J27/24B01J35/393
Inventor 付凤富金鑫
Owner FUZHOU UNIV