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Preparation method of palladium-copper bimetallic nanoflower peroxide and application of palladium-copper bimetallic nanoflower peroxide to glucose detection

A bimetallic nano-peroxide technology, applied in the field of optical sensing, can solve the problems of cumbersome steps and low catalytic activity, and achieve the effects of simple preparation process, increased contact area, and fast detection rate

Active Publication Date: 2020-11-27
UNIV OF JINAN
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Problems solved by technology

[0003] Aiming at the current problems of cumbersome preparation steps and low catalytic activity of palladium-based noble metal nanozymes, we have successfully prepared a three-dimensional nanoflower structure assembled from two-dimensional nanosheets of PdCu double alloy by a one-pot method, and the preparation process is simple.

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  • Preparation method of palladium-copper bimetallic nanoflower peroxide and application of palladium-copper bimetallic nanoflower peroxide to glucose detection

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Embodiment 1

[0025] (1) Preparation and characterization of palladium-copper nanoflowers: 10 mg sodium tetrachloropalladate, 50 mg tungsten hexacarbonyl, x mg (x=0, 2.9, 5.8, 10, 29) copper chloride dihydrate, 8 mL Dimethylformamide and 2 mL of glacial acetic acid were added to a 25 mL round-bottomed flask; the above solution was ultrasonically mixed for 10 min, and then the homogeneously mixed solution was heated and stirred in an oil bath at 120 °C for 2 h; finally, the obtained product was mixed with water and Ethanol was washed by centrifugation several times, and finally dispersed in water. According to the stoichiometric ratio of palladium-copper precursors, the five products are recorded as Pd, Pd 1 Cu 0.5 , Pd 1 Cu 1.7 , Pd 1 Cu 3 and Pd 1 Cu 5 . The prepared PdCu nanoflowers were characterized by transmission electron microscopy, scanning electron microscopy, and X-ray photoelectron spectroscopy. from figure 1 and image 3 Transmission electron microscope and scanning e...

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Abstract

The invention provides a preparation method of a palladium-copper bimetallic nanoflower peroxide. The preparation method comprises the following steps: adding sodium tetrachloropalladate, tungsten hexacarbonyl, copper chloride dihydrate, dimethylformamide and glacial acetic acid to a round-bottom flask; ultrasonically and uniformly mixing the above solutions, and then heating and stirring the uniformly mixed solutions through an oil bath; and finally, centrifugally washing the obtained product by using water and ethanol for serval times, so as to obtain a bimetallic alloy nanomaterial, namelyPdCu nanoflower. The preparation process of the palladium-copper bimetallic nanoflower peroxide is simple and the yield is high; and through the prepared unique two-dimensional structure, the reactionrate is promoted and the detection time is saved. The invention further discloses the application of the palladium-copper bimetallic nanoflower peroxide to glucose detection. Through such a detectionmethod, the sensitivity and the selective detection of glucose can be achieved.

Description

technical field [0001] The invention belongs to the technical field of optical sensing, and in particular relates to a preparation method of a palladium-copper bimetallic nano-flower peroxide and its application in glucose detection. Background technique [0002] Natural enzymes are effective biocatalysts that exist in living organisms. Because of its high catalytic activity and specificity, it is widely used in the fields of biology, medicine, chemical industry and environment. Horseradish peroxidase is the most common natural peroxidase, which can catalyze the chemical reaction of hydrogen peroxide and is often used in the detection of hydrogen peroxide and glucose. However, its catalytic activity is easily affected by the reaction system environment such as pH and temperature. In addition, the preparation and purification costs of natural enzymes are high. Therefore, it is of great significance to study peroxidase biomimetics with high catalytic activity, stability and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B82Y40/00B01J23/89G01N21/33G01N21/78G01N31/10
CPCB22F9/24B82Y40/00B01J23/8926G01N21/33G01N21/78G01N31/10B01J35/23
Inventor 逯一中刘文栋陈传霞倪朋娟姜媛媛
Owner UNIV OF JINAN
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