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A preparation method of two-dimensional ordered nano-se lattice on the surface of medical 316l stainless steel

A stainless steel and nanotechnology, applied in the field of 316LSS materials, achieves the effect of convenient operation, good repeatability, and simple and easy preparation method

Inactive Publication Date: 2019-10-08
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for preparing a two-dimensional ordered nano-Se lattice on the surface of medical 316L stainless steel. The method solves the problem of preparing an ordered nano-Se lattice. low

Method used

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  • A preparation method of two-dimensional ordered nano-se lattice on the surface of medical 316l stainless steel
  • A preparation method of two-dimensional ordered nano-se lattice on the surface of medical 316l stainless steel
  • A preparation method of two-dimensional ordered nano-se lattice on the surface of medical 316l stainless steel

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Experimental program
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Effect test

Embodiment 1

[0034] (1) Preparation of nano-pit arrays on the surface of 316LSS: put 316LSS in a mixture of perchloric acid and ethylene glycol (V:V=1:15), the temperature of the system solution is 0°C, anodize at 40V for 10 minutes, and the diameter of the pits is 50nm, the pit depth is 5nm, and the pit density is 1.5×10 10 (pcs / cm 2 ).

[0035] (2) Preparation of Se solution: Add 0.1 g of sodium selenite into 10 mL of deionized water at a temperature of 3° C. and stir evenly; add 0.2 g of ascorbic acid into 20 mL of deionized water at a temperature of 3° C. and stir evenly , and then the sodium selenite solution was added dropwise into the aqueous solution of ascorbic acid while stirring while keeping the temperature at 0° C. for 1 min to obtain the Se solution.

[0036] (3) The Se solution prepared in (2) was quickly dropped into a 316LSS glass vial equipped with a nanopit array, and stood at 5°C for 4h.

[0037] (4) Take out the sample, wash the surface of the material alternately w...

Embodiment 2

[0044] (1) Preparation of nano-pit arrays on the surface of 316LSS: put 316LSS in a mixture of perchloric acid and ethylene glycol (V:V=1:19), the temperature of the system solution is 2°C, anodize at 40V for 11min, the diameter of the pits 70nm, pit depth 7nm, pit density 1.3×10 10 (pcs / cm 2 ).

[0045] (2) Preparation of Se solution: Add 0.1 g of sodium selenite to 10 mL of deionized water at a temperature of 5° C. and stir evenly; add 0.3 g of ascorbic acid to 30 mL of deionized water at a temperature of 5° C. and stir evenly , and then the sodium selenite solution was added dropwise into the aqueous solution of ascorbic acid while stirring while keeping the temperature at 2° C. for 1 min to obtain a Se solution.

[0046] (3) The Se solution prepared in (2) was quickly dropped into a 316LSS glass vial equipped with a nano-pit array, and stood at 5°C for 18h.

[0047] (4) Take out the sample, wash the surface of the material alternately with ethanol and deionized water, a...

Embodiment 3

[0052] (1) Preparation of nano-pit arrays on the surface of 316LSS: put 316LSS in a mixture of perchloric acid and ethylene glycol (V:V=1:25), the temperature of the system solution is 0°C, anodize at 70V for 30s, and the diameter of the pits is 150nm, the pit depth is 5nm, and the pit density is 1.2×10 10 (pcs / cm 2 ).

[0053] (2) Preparation of Se solution: Add 0.1 g of sodium selenite into 10 mL of deionized water at a temperature of 8° C. and stir evenly; add 0.4 g of ascorbic acid into 40 mL of deionized water at a temperature of 8° C. and stir evenly , and then the sodium selenite solution was added dropwise into the aqueous solution of ascorbic acid while stirring while keeping the temperature at 8° C. for 1 min to obtain a Se solution.

[0054] (3) The Se solution prepared in (2) was quickly dropped into a 316LSS glass vial equipped with a nanopit array, and stood at 8°C for 18h.

[0055] (4) Take out the sample, wash the surface of the material alternately with eth...

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Abstract

The invention relates to a preparation method for a two-dimensional ordered nanometer Se dot matrix on the medical 316L stainless steel surface. The preparation method comprises the steps that (1) 316LSS is placed in a glycol electrolyte of perchloric acid for anodic oxidation, and 316LSS with a nanometer concave pit array is obtained; (2) a seleninic acid solution or a selenite solution is added to an ascorbic acid solution by drops while stirring and stirred, and a Se solution is obtained; and (3) the Se solution in the step (2) is dropped into the 316LSS with the nanometer concave pit array in the step (1), standing is conducted at the temperature of -5 DEG C-10 DEG C for 4-24 h, and the two-dimensional ordered nanometer Se dot matrix is obtained after cleaning, drying and calcination. The problem of preparing ordered nanometer Se dot matrix is solved, the preparation method is simple and efficient, environmental friendliness and low cost are achieved, the obtained Se nanometer dot matrix is uniform in particle size and regular in distribution, and a nanometer Se dot matrix structure is in long-range order and dense in distribution and can be used for material surface function modification and the biological medicine fields such as antisepsis and tumor resistance.

Description

technical field [0001] The invention belongs to the field of 316LSS materials, in particular to a method for preparing a two-dimensional ordered nano-Se lattice on the surface of medical 316L stainless steel. Background technique [0002] 316LSS is widely used in the field of clinical medicine because of its excellent performance and low price. In its long-term clinical application, there are still unavoidable problems and deficiencies, such as lack of biological activity and antibacterial and antitumor properties. In order to endow 316LSS with biological activity and improve its antibacterial and antitumor properties, an effective method is to modify the surface of the matrix material. [0003] Se element is an essential trace element for the human body and participates in the normal metabolism of the body. Nano-Se has the advantages of weak toxicity, good anti-oxidation performance, and high biological activity. It can protect organisms and cells from oxidative damage, re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/00C23C18/54C25D11/34A61L31/08A61L31/16
Inventor 倪似愚梅琳刘玉昆崔冉
Owner DONGHUA UNIV
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