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A kind of gold nano triangular plate-titanium dioxide core-shell nanocomposite, its preparation method and application

A nanocomposite, titanium dioxide technology, applied in the fields of biomedicine and material chemistry, can solve the problem of less research on photothermal therapy, and achieve the effect of good ability to kill cancer cells, good application prospects, and good photothermal effect.

Inactive Publication Date: 2020-09-01
HUANGHE S & T COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are relatively few studies on the photothermal treatment of gold nanocrystals in the second infrared window.

Method used

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  • A kind of gold nano triangular plate-titanium dioxide core-shell nanocomposite, its preparation method and application
  • A kind of gold nano triangular plate-titanium dioxide core-shell nanocomposite, its preparation method and application
  • A kind of gold nano triangular plate-titanium dioxide core-shell nanocomposite, its preparation method and application

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Embodiment 1

[0029] A kind of preparation method of gold nano triangular plate-titanium dioxide core-shell nanocomposite:

[0030] 1. Preparation of Gold Nanotriangular Plate Seeds

[0031] 1 mL of 0.01M chloroauric acid (HAuCl 4 ) solution and 1mL 0.01M trisodium citrate solution were sequentially added to 36mL of ultrapure water, and 1mL of freshly prepared 0.01M sodium borohydride solution (NaBH 4 ), stirred vigorously for 30s, and then stood at room temperature for 2h.

[0032] 2. Preparation of Gold Nanotriangular Plate Growth Solution

[0033] Growth Solution 1 and Growth Solution 2 are the exact same solution. The specific preparation is as follows, first prepare 9 mL of 0.05M cetyltrimethylammonium bromide solution (CTAB), and then add 0.01M 250 μL HAuCl to it sequentially 4 , 0.1M 50 μL sodium hydroxide solution (NaOH), 0.01M 50 μL potassium iodide solution (KI) and 0.1M 50 μL ascorbic acid solution (AA), mix well. The solution color eventually became colorless.

[0034] Gro...

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Abstract

A gold nano triangular plate-titanium dioxide core-shell nanocomposite, its preparation method and application, belonging to the technical field of biomedicine and material chemistry, the preparation method includes the following steps: (1) centrifuging the gold nano triangular plate mother liquor, dispersing it in the mother liquor Obtain the gold nano-triangular plate solution in an equal volume of ultrapure water; (2) Add the gold nano-triangular plate solution dropwise into the sodium polystyrene sulfonate solution, stir for 8-12 hours, centrifuge, and then disperse the obtained solid in ultrapure water, Obtain gold nanoplate-sodium polystyrene sulfonate solution; (3) mix titanium trichloride and ultrapure water, add sodium bicarbonate solution dropwise under stirring, then add gold nanoplate-sodium polystyrene sulfonate solution, Mix and stir for 0.5~1.5h; the obtained gold nanoplate-titanium dioxide core-shell nanocomposite. By culturing and illuminating cancer cells, it has demonstrated a good ability to kill cancer cells. This nanostructure shows good application prospects in cancer treatment.

Description

technical field [0001] The invention belongs to the technical fields of biomedicine and material chemistry, and in particular relates to a gold nano triangular plate-titanium dioxide core-shell nanocomposite, its preparation method and application. Background technique [0002] Photothermal therapy, which refers to providing high-temperature local heating to remove tumors when lasers are irradiated to tumor sites, has great application potential in cancer treatment. Near-infrared light is widely used in photothermal therapy because it can effectively pass through biological tissues and accurately locate tumor sites. In the near-infrared region, there are two infrared windows, the wavelength range of the first infrared window is 650nm-950nm, and the wavelength range of the second infrared window is 1000nm-1350nm. Although the penetration depth of traditional lasers in the first infrared window range is greatly improved compared with visible light, it is still unsatisfactory ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/02
CPCB22F1/0553B22F1/054B22F1/145B22F1/16
Inventor 高凤丽张守仁魏士礼何广莉杨保成
Owner HUANGHE S & T COLLEGE
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