Metal-modified superhydrophobic material and preparation method thereof

Abstract

The invention discloses a metal-modified superhydrophobic material and a preparation method thereof, belongs to the field of preparation of superhydrophobic materials, and aims to solve the technical problems in environmentally-friendly, energy-saving and efficient preparation of the superhydrophobic material. The preparation method comprises the following steps: S1, preparing conical nano nickel by using a polylactic acid template; S2, impregnating the conical nano nickel in a gold ion-containing gold plating solution for replacement reaction; S3, carrying out cleaning and drying; S4, then impregnating the conical nano nickel in a hexadecyl mercaptan solution for complex reaction; S5, carrying out cleaning and drying, thus obtaining the metal-modified superhydrophobic material, wherein the metal-modified superhydrophobic material is sulfydryl-carried metal gold, and hill-shaped bulges are formed on the surface of the metal-modified superhydrophobic material. The metal-modified superhydrophobic material is prepared according to the preparation method; the metal-modified superhydrophobic material is the sulfydryl-carried metal gold, and the hill-shaped bulges are formed on the surface of the metal-modified superhydrophobic material.

Description

technical field

[0001] The invention relates to the field of preparation of superhydrophobic materials, in particular to a metal-modified superhydrophobic material and a preparation method thereof. Background technique

[0002] Hydrophobic materials have broad application prospects in both scientific research and daily life. The hydrophobic effect mainly relies on two aspects: the material has a hydrophobic microscopic morphology and the surface contains hydrophobic substances or groups. Due to the good super-hydrophobic function on the surface of the lotus leaf, the water falling on the lotus leaf will form water droplets due to the surface tension and slide down. Observed under a high electron microscope, the leaf surface of the lotus leaf is covered with "small bags" one by one. If water droplets fall on the contact points of the "small bags", it will achieve a hydrophobic effect. At the same time, coating low surface energy substances on the surface of materials is als...

Examples

Embodiment 1

[0046] The preparation method of the metal-modified superhydrophobic material of the present invention comprises the following steps:

[0047] (1) Using polylactic acid as a template, place the template in a sodium hydroxide solution with a concentration of 4M and immerse it for 10 minutes at a temperature of 40 °C, and etch holes on the template through the sodium hydroxide solution to obtain a template with holes ;

[0048] (2) Immerse the template with holes in a sensitizing solution mainly composed of 90 mg stannous chloride, 3.3 mL ethanol, 46 uL trifluoroacetic acid and 6.7 mL deionized water for 1 min to sensitize the template , to obtain a template adsorbed with divalent tin ions;

[0049] (3) Immerse the template adsorbed with divalent tin ions in an activation solution mainly composed of 218mg palladium chloride, 10mL deionized water and 47mg sodium chloride for 1min to activate the template, and then return the template to Adsorbed with divalent palladium ions to ...

Embodiment 2

[0061] The preparation method of the metal-modified superhydrophobic material of the present invention comprises the following steps:

[0062] (1) Using polylactic acid as a template, place the template in a sodium hydroxide solution with a concentration of 4M and immerse it for 10 minutes at a temperature of 40 °C, and etch holes on the template through the sodium hydroxide solution to obtain a template with holes ;

[0063] (2) Immerse the template with holes in a sensitizing solution mainly composed of 90 mg stannous chloride, 3.3 mL ethanol, 46 uL trifluoroacetic acid and 6.7 mL deionized water for 1 min to sensitize the template , to obtain a template adsorbed with divalent tin ions;

[0064] (3) Immerse the template adsorbed with divalent tin ions in an activation solution mainly composed of 218mg palladium chloride, 10mL deionized water and 47mg sodium chloride for 1min to activate the template, and then return the template to Adsorbed with divalent palladium ions to ...

Embodiment 3

[0076] The preparation method of the metal-modified superhydrophobic material of the present invention comprises the following steps:

[0077] (1) Using polylactic acid as a template, place the template in a sodium hydroxide solution with a concentration of 2M and immerse it for 20 minutes at a temperature of 50 °C, and etch holes on the template through the sodium hydroxide solution to obtain a template with holes;

[0078] (2) Immerse the template with holes in a sensitizing solution mainly composed of 90 mg stannous chloride, 3.3 mL ethanol, 46 uL trifluoroacetic acid and 6.7 mL deionized water for 1 min to sensitize the template , to obtain a template adsorbed with divalent tin ions;

[0079] (3) Immerse the template adsorbed with divalent tin ions in an activation solution mainly composed of 218mg palladium chloride, 10mL deionized water and 47mg sodium chloride for 1min to activate the template, and then return the template to Adsorbed with divalent palladium ions to ob...

technical field

[0001] The invention relates to the field of preparation of superhydrophobic materials, in particular to a metal-modified superhydrophobic material and a preparation method thereof. Background technique

[0002] Hydrophobic materials have broad application prospects in both scientific research and daily life. The hydrophobic effect mainly relies on two aspects: the material has a hydrophobic microscopic morphology and the surface contains hydrophobic substances or groups. Due to the good super-hydrophobic function on the surface of the lotus leaf, the water falling on the lotus leaf will form water droplets due to the surface tension and slide down. Observed under a high electron microscope, the leaf surface of the lotus leaf is covered with "small bags" one by one. If water droplets fall on the contact points of the "small bags", it will achieve a hydrophobic effect. At the same time, coating low surface energy substances on the surface of materials is als...

Examples

Embodiment 1

[0046] The preparation method of the metal-modified superhydrophobic material of the present invention comprises the following steps:

[0047] (1) Using polylactic acid as a template, place the template in a sodium hydroxide solution with a concentration of 4M and immerse it for 10 minutes at a temperature of 40 °C, and etch holes on the template through the sodium hydroxide solution to obtain a template with holes ;

[0048] (2) Immerse the template with holes in a sensitizing solution mainly composed of 90 mg stannous chloride, 3.3 mL ethanol, 46 uL trifluoroacetic acid and 6.7 mL deionized water for 1 min to sensitize the template , to obtain a template adsorbed with divalent tin ions;

[0049] (3) Immerse the template adsorbed with divalent tin ions in an activation solution mainly composed of 218mg palladium chloride, 10mL deionized water and 47mg sodium chloride for 1min to activate the template, and then return the template to Adsorbed with divalent palladium ions to ...

Embodiment 2

[0061] The preparation method of the metal-modified superhydrophobic material of the present invention comprises the following steps:

[0062] (1) Using polylactic acid as a template, place the template in a sodium hydroxide solution with a concentration of 4M and immerse it for 10 minutes at a temperature of 40 °C, and etch holes on the template through the sodium hydroxide solution to obtain a template with holes ;

[0063] (2) Immerse the template with holes in a sensitizing solution mainly composed of 90 mg stannous chloride, 3.3 mL ethanol, 46 uL trifluoroacetic acid and 6.7 mL deionized water for 1 min to sensitize the template , to obtain a template adsorbed with divalent tin ions;

[0064] (3) Immerse the template adsorbed with divalent tin ions in an activation solution mainly composed of 218mg palladium chloride, 10mL deionized water and 47mg sodium chloride for 1min to activate the template, and then return the template to Adsorbed with divalent palladium ions to ...

Embodiment 3

[0076] The preparation method of the metal-modified superhydrophobic material of the present invention comprises the following steps:

[0077] (1) Using polylactic acid as a template, place the template in a sodium hydroxide solution with a concentration of 2M and immerse it for 20 minutes at a temperature of 50 °C, and etch holes on the template through the sodium hydroxide solution to obtain a template with holes;

[0078] (2) Immerse the template with holes in a sensitizing solution mainly composed of 90 mg stannous chloride, 3.3 mL ethanol, 46 uL trifluoroacetic acid and 6.7 mL deionized water for 1 min to sensitize the template , to obtain a template adsorbed with divalent tin ions;

[0079] (3) Immerse the template adsorbed with divalent tin ions in an activation solution mainly composed of 218mg palladium chloride, 10mL deionized water and 47mg sodium chloride for 1min to activate the template, and then return the template to Adsorbed with divalent palladium ions to ob...

Images