Bismuth sulfide nanorod with CT (computed tomography) angiography function, nano-composite material and preparation thereof

A nanocomposite material, bismuth sulfide technology, applied in X-ray contrast agent preparation, nanotechnology, bismuth compounds, etc., can solve the problems of uncontrollable shape of bismuth sulfide nanoparticles, limit the application of bismuth sulfide, harsh reaction conditions, etc., to achieve The effect of controllable shape, uniform size and short reaction time

Inactive Publication Date: 2012-08-15
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, from the perspective of the preparation process, the reaction conditions are relatively harsh and the reaction time is relatively long; from the perspective of the preparation effect, there are some defects in the morphology and monodispersity
For example, the Weissleder, R research group (Nat.

Method used

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  • Bismuth sulfide nanorod with CT (computed tomography) angiography function, nano-composite material and preparation thereof
  • Bismuth sulfide nanorod with CT (computed tomography) angiography function, nano-composite material and preparation thereof
  • Bismuth sulfide nanorod with CT (computed tomography) angiography function, nano-composite material and preparation thereof

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Experimental program
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Effect test

Embodiment 1

[0027] 80mL of oleylamine was added into the reaction flask, the temperature was raised to 170°C under the protection of argon, and kept at this temperature for 20min. 1.26g BiCl 3 Ultrasonic dissolved in 20mL oleylamine and 0.5g sulfur powder or 1.5g thioacetamide ultrasonically dissolved in 20mL oleylamine and added to a three-necked flask in turn, stirred for 30min. Remove the heating device, cool to room temperature, add ethanol and centrifuge, then wash the precipitate three times, and dry at room temperature. figure 1 is the TEM image of the obtained product, figure 2 It is an XRD pattern, which proves that bismuth sulfide nanorods are obtained, and the molar ratio of Bi to S is 2:3.

[0028] image 3 It is the TEM figure (A) 10min, (B) 20min, (C) 30min of the bismuth sulfide nanorod obtained in embodiment 1 at different reaction times. It can be seen from the figure that the bismuth sulfide nanorods synthesized in the oleylamine phase increase in length (~70nm, ~80...

Embodiment 2

[0031] Add 80mL of ethylene glycol and 8g of PVP (15K) into the reaction flask, raise the temperature to 170°C under the protection of argon, and keep at this temperature for 20min. 1.26g BiCl 3 Ultrasonic dissolved in 20mL of ethylene glycol and 1.5g of thioacetamide ultrasonically dissolved in 20mL of ethylene glycol and added to a three-necked flask in turn, stirred and reacted for 30min. Remove the heating device, cool to room temperature, add ethanol and centrifuge, then wash the precipitate three times, and dry at room temperature.

Embodiment 3

[0033] 80 mL of glycerin and 8 g of PVP (15K) were added to the reaction flask, and the temperature was raised to 170° C. under the protection of argon, and kept at this temperature for 20 min. 1.26g BiCl 3 Ultrasonic dissolving in 20mL glycerin and 1.5g thioacetamide ultrasonically dissolving in 20mL glycerin were added to a three-necked flask in turn, and stirred for 30min. Remove the heating device, cool to room temperature, add ethanol and centrifuge, then wash the precipitate three times, and dry at room temperature.

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Abstract

The invention discloses a bismuth sulfide nanorod with a CT (computed tomography) angiography function, a nano-composite material and preparation thereof. The preparation method of the bismuth sulfide nanorod comprises the following steps of: (1) dissolving bismuth chloride in a solvent in an ultrasonic manner to get a solution A; (2) dissolving sulfur powder or thiacetamide in the solvent in the ultrasonic manner to get a solution B; and (3) increasing the temperature of the solvent to 80-180 DEG C under the protection of argon, sequentially adding the solution A and the solution B, stirring to realize complete reaction, cooling, and then adding ethanol for centrifugation so as to get the bismuth sulfide nanorod, wherein the solvent is selected from oleyl amine, ethylene glycol and glycerin. The oleyl amine and a metal salt type compound are added into a toluene solution of the bismuth sulfide nanorod, stirring is performed at room temperature, and the ethanol is added for centrifugation so as to get the nano-composite material. The method disclosed by the invention is fast, simple and convenient, and the prepared bismuth sulfide nanorod and the nano-composite material thereof have the advantages of controllable appearance, uniform size and low cost and have excellent CT signals.

Description

technical field [0001] The invention relates to a synthesis of nanomaterials and its application in CT imaging, in particular to a bismuth sulfide nanorod, a nanocomposite material and a preparation method thereof. Background technique [0002] Bismuth sulfide (Bi 2 S 3 ) as A 2 V B 3 VI (A = Sb, Bi, As; B = S, Se, Te) is an important semiconductor material, which has potential application value in thermoelectric, electronic and optoelectronic devices, as well as electrochemical hydrogen storage and hydrogen sensors. Photosensitive materials, nonlinear optical materials, photocatalytic materials, bioimaging materials, coating materials, etc. have broad application prospects. In recent years, Bi 2 S 3 The research of nanomaterials mainly focuses on obtaining nanostructures with different shapes and sizes, including: nanowires, nanotubes, nanorods, nanofibers, nanosheets, nanospheres, nanoflowers, and quantum dots. These novel nanostructures They often have their own...

Claims

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Application Information

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IPC IPC(8): C01G29/00B82Y40/00A61K49/04
Inventor 顾宏伟鲁英杰曹雪琴郭亮李永刚王佳庆朱婧
Owner SUZHOU UNIV
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