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Method for preparing palladium nanocube

A cubic, nano-palladium technology, applied in the field of materials, can solve the problems of expensive equipment, severe reaction conditions, complicated preparation process, etc., and achieve the effects of simple structure, simple preparation process and easy operation.

Inactive Publication Date: 2019-06-07
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods have disadvantages such as complex preparation process, high cost, severe reaction conditions, and expensive equipment.
In addition, the use of toxic reagents in the preparation process will not only pollute the environment, but also cause great harm to the human body when applied to biomedicine

Method used

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  • Method for preparing palladium nanocube
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  • Method for preparing palladium nanocube

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preparation example Construction

[0023] The method disclosed by the present invention is a kind of preparation method of palladium nano cube, and its steps are:

[0024] (1) Dissolving vapreotide acetate in a hydrochloric acid solution with a pH of 1 to 3, and preparing 300 μL vapreotide acetate solution with a concentration of 0.1 to 0.2 mM;

[0025] (2) According to vapreotide acetate: the molar ratio of palladium chloride is 1:20~60 ratio, adds palladium chloride solution in the solution of step (1), is placed in the constant temperature metal bath of 60~80 ℃;

[0026] (3) by palladium chloride: the mol ratio of ascorbic acid is the ratio of 1:10~50, in the mixed solution of step (2), add the ascorbic acid solution of new preparation rapidly and reduce, and solution becomes dark brown gradually by light yellow, thereby Palladium nanocubes with regular shape and uniform particle size were obtained.

[0027] Among them, the concentration of palladium chloride solution is 4-6 mM, and the dosage is 800 μL; th...

Embodiment 1

[0030] Dissolve vapreotide acetate (Wuhan Dongkangyuan Technology Co., Ltd.) in hydrochloric acid solution with pH=3.0, and prepare 300 μL vapreotide acetate solution with a concentration of 0.1 mM; then add 800 μL of 6 mM chloropalladium acid solution, place in 15 min in a constant temperature metal bath at 80°C; finally, 40 μL of fresh 200 mM ascorbic acid solution was quickly added, and the mixed solution rapidly changed from light yellow to dark brown, namely delvapretide palladium nanocubes.

[0031] The morphology of silver-core-palladium-shell nanocubes was characterized by transmission electron microscopy, as shown in figure 1 As shown, the side length of the synthesized palladium nanocube is about 60nm, its shape is regular, and the metal and the template are well combined.

Embodiment 2

[0033] Dissolve vapreotide acetate (Wuhan Dongkangyuan Technology Co., Ltd.) in hydrochloric acid solution with pH=2.0, and prepare 300 μL vapreotide acetate solution with a concentration of 0.15 mM; then add 800 μL of 5 mM chloropalladium acid solution, place in 25 minutes in a constant temperature metal bath at 70°C; finally, 100 μL of fresh 100 mM ascorbic acid solution was quickly added, and the mixed solution rapidly changed from light yellow to dark brown, namely delvapretide palladium nanocubes.

[0034] The morphology of silver-core-palladium-shell nanocubes was characterized by transmission electron microscopy, as shown in figure 2 As shown, the side length of the synthesized palladium nanocube is about 80nm, its shape is regular, and the metal and the template are well combined.

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Abstract

The invention discloses a preparation method of a palladium nanocube, and belongs to the technical field of materials. According to the preparation method of the palladium nanocube, valproate acetateis dissolved in a hydrochloric acid solution with the pH value of 1-3 to prepare a 300-microliter valproate acetate solution with the concentration of 0.1-0.2 mM; a palladium chloride solution is added with the molar ratio of valprotide acetate to palladium chloride being 1:(20-60), and the mixture is placed in a constant-temperature metal bath of 60-80 DEG C; and a newly prepared ascorbic acid solution is rapidly added for reduction with the molar ratio of palladium chloride to ascorbic acid being 1:(10-50), and the solution gradually changes from light yellow to black brown, so that the palladium nanocube with regular morphology and uniform particle size is obtained. The preparation method of the palladium nanocube has simple preparation process and easy operation; and the method does not use toxic reagents and is environmentally friendly. The prepared palladium nanocube is regular in appearance, has good photothermal conversion performance, generates a rapid temperature rise phenomenon after short-time low-power laser irradiation, and can be used as a thermal therapeutic agent for cancer treatment.

Description

technical field [0001] The invention belongs to the technical field of materials, in particular to a preparation method of nanometer materials. Background technique [0002] Palladium metal nanomaterials have surface effects, quantum size effects, and macroscopic quantum tunneling effects, which make them exhibit good electrical, optical, and catalytic properties, and have been applied to the fields of catalysis, energy, biosensing, and biomedicine. The properties of these materials depend on the size, morphology, structure and composition, etc. The morphology and structure are the main factors affecting the surface plasmon resonance peak of the material, so the resonance peak can be changed by adjusting the morphology and structure, when it redshifts , which will make the material have the characteristics of photothermal conversion, and can be more widely used in photothermal therapy and other photothermal response related fields. Compared with the widely used gold nanomat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B82Y40/00
Inventor 高大威刘欢朱瑞艳李晓玲刘志伟王龙刚
Owner YANSHAN UNIV
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