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Synthesis method of palladium nano sheet

A synthesis method, palladium nanotechnology, applied in the field of synthesis of palladium nanosheets, can solve the problems of photothermal instability, loss of near-infrared surface plasmon absorption spectrum, easy deformation, etc., to achieve significant photothermal benefits, excellent electrocatalytic performance, The effect of good absorption characteristics

Inactive Publication Date: 2012-09-12
XIAMEN UNIV
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  • Description
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  • Application Information

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Problems solved by technology

However, gold and silver nanomaterials generally have the characteristics of photothermal instability, and are easily deformed under the irradiation of light, thus losing the characteristics of near-infrared surface plasmon absorption spectrum.

Method used

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  • Synthesis method of palladium nano sheet
  • Synthesis method of palladium nano sheet
  • Synthesis method of palladium nano sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Preparation of 60nm palladium hexagonal nanosheets: 50mg palladium acetylacetonate, 160mg polypyrrolidone, 185mg hexadecyltrimethylammonium bromide were dissolved in 10ml N, N'-dimethylformamide and 2ml water, under carbon monoxide atmosphere, After slowly heating up to 100°C, keep the temperature constant for 3.0h, then drop to room temperature, add acetone and centrifuge to obtain palladium hexagonal nanosheets with a side length of 60nm (such as figure 1 ).

Embodiment 2

[0040] Preparation of 35nm palladium hexagonal nanosheets: 50mg palladium acetylacetonate, 160mg polypyrrolidone, 185mg hexadecyltrimethylammonium bromide were dissolved in 10ml N, N'-dimethylpropionamide and 2ml water, under carbon monoxide atmosphere, After slowly warming up to 100°C, keep the temperature constant for 3.0h, then drop to room temperature, add acetone and centrifuge to obtain palladium hexagonal nanosheets with a side length of 35nm (such as figure 2 ).

Embodiment 3

[0042] Prepare 125nm palladium hexagonal nanosheets: dissolve 50mg palladium acetylacetonate, 160mg polypyrrolidone, and 185mg hexadecyltrimethylammonium bromide in 10ml phenylethyl alcohol, and slowly heat up to 100°C under a carbon monoxide atmosphere, then keep the temperature at 3.0 h, then down to room temperature, add acetone and centrifuge to obtain palladium hexagonal nanosheets (such as image 3 ).

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Abstract

The invention provides a synthesis method of a palladium nano sheet, and relates to a palladium nano material. The method comprises the following steps: adding a palladium precursor, a surface protectant, and halogen ion-containing organic salt or halogen ion-containing inorganic salt to a solvent to obtain mixed liquor; placing the mixed liquor under a carbon monoxide atmosphere, and heating to 10-200 DEG C; and then cooling to room temperature, adding acetone, carrying out centrifugal purification, and cleaning to obtain the palladium nano sheet. The synthesized palladium nano sheet has theadvantages of high yield greater than 80%, uniform particle diameter with the deviation smaller than 10%, ultrathin structure with the thickness about 1.8nm, larger specific area, high atom utilization ratio and favorable electro-catalytic activity. The size of the obtained palladium nano sheet can be well adjusted. The palladium nano sheet has good near-infrared spectrum absorption feature, has prodigious potential application in the biological thermal therapy, such as the application in the near-infrared thermal therapy for tumors; and the palladium nano sheet has favorable electro-catalytic performance.

Description

technical field [0001] The invention relates to a palladium nanometer material, in particular to a synthesis method of a palladium nanosheet. Background technique [0002] Metal palladium has attracted great attention because of its high-efficiency catalytic activity and wide application prospects. Metal palladium is even considered to be an indispensable star element in the development of modern society. In the past time, the research on palladium nanomaterials has attracted more and more attention and achieved gratifying results. Many palladium nanostructures with different sizes and shapes have been prepared and obtained, and it has also shown a good Application prospect. However, compared with gold and silver nanomaterials, palladium nanomaterials still have an important property that has not been well developed, such as its surface plasmon resonance absorption property. [0003] Surface plasmon resonance is an important property of metal nanomaterials. With the develo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24
Inventor 郑南峰黄小青汤少恒
Owner XIAMEN UNIV
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