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Method for synthesizing chain-globular nano platinum in self-assembly manner by using bacitracin as template

A technology of template self-assembly and bacitracin, applied in the field of preparation of precious metal nanomaterials, can solve the problems of raw materials and intermediates easily polluting the environment, application limitations of platinum nanoparticles, easy precipitation of platinum nanoparticles, etc., and achieves high yield and size. Uniform and good dispersion effect

Active Publication Date: 2016-07-06
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The platinum nanoparticles prepared by these traditional chemical techniques are easy to precipitate and aggregate, and the shape is not easy to control.
In addition, the preparation process requires high-strength instruments, the raw materials and intermediates are easy to pollute the environment, the cost is high, the preparation process is complicated, and the yield is low
The above shortcomings have further led to the limitation of the application of the prepared platinum nanoparticles, such as: biomedical field, pharmaceutical field, etc.

Method used

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  • Method for synthesizing chain-globular nano platinum in self-assembly manner by using bacitracin as template
  • Method for synthesizing chain-globular nano platinum in self-assembly manner by using bacitracin as template
  • Method for synthesizing chain-globular nano platinum in self-assembly manner by using bacitracin as template

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take 0.57 mg of bacitracin (Hubei Haiyi Pharmaceutical Chemical Co., Ltd.), and dissolve it in 1 mL of hydrochloric acid solution at pH 4.0 to obtain a 0.4 mM bacitracin solution; take 200 mL of the above bacitracin solution and heat-treat it in a metal bath at 50°C for 40 min ; Treated bacitracin solution with 200mL4.0mM PtCl 4 The solution (Shanghai West Asia Reagent Co., Ltd.) was mixed; the above-mentioned mixed solution was placed in a double-layer gas shaker, incubated at 100rmp, 22°C for 16h, and then 4mM reducing agent sodium borohydride (Tianjin Guangfu Fine Chemical Research Institute) was added. 60mL was reduced, the dropping rate was 1 drop / minute, 30mL / drop, the reaction temperature was controlled at 23°C, and the reaction was carried out for 10 minutes. The color of the solution slowly changed from light yellow to light gray, and bacitracin-streptospheric nano-platinum was obtained.

[0023] like figure 1 As shown, the diameter of bacitracin-streptosphere...

Embodiment 2

[0025] Take 0.71mg of bacitracin (Hubei Haiyi Pharmaceutical Chemical Co., Ltd.), and dissolve it in 1mL of pH4.5 hydrochloric acid solution to obtain a 0.5mM bacitracin solution; take 200mL of the above bacitracin solution and heat-treat it in a metal bath at 60°C for 50min ; Treated bacitracin solution with 200mL4.5mM PtCl 4 The solution (Shanghai West Asia Reagent Co., Ltd.) was mixed; the above-mentioned mixed solution was placed in a double-layer gas shaker, incubated at 110rmp, 23°C for 19h, and then 5mM reducing agent sodium borohydride (Tianjin Guangfu Fine Chemical Research Institute) was added. 90mL was reduced, the dropping rate was 2 drops / minute, 30mL / drop, the reaction temperature was controlled at 24°C, and the reaction was carried out for 15 minutes. The color of the solution slowly changed from light yellow to light gray, and bacitracin-streptospheric nano-platinum was obtained.

[0026] like figure 2 As shown, the diameter of the bacitracin-streptosphere na...

Embodiment 3

[0028] Take 0.85 mg of bacitracin (Hubei Haiyi Pharmaceutical Chemical Co., Ltd.), and dissolve it in 1 mL of hydrochloric acid solution at pH 5.0 to obtain a 0.6 mM bacitracin solution; take 200 mL of the above bacitracin solution and heat-treat it in a metal bath at 70°C for 60 min ; Treated bacitracin solution with 200mL5.0mM PtCl 4 The solution (Shanghai West Asia Reagent Co., Ltd.) was mixed; the above-mentioned mixed solution was placed in a double-layer gas shaker, incubated at 120rmp and 24°C for 22h, and then 6mM reducing agent sodium borohydride (Tianjin Guangfu Fine Chemical Research Institute) was added. 90mL was reduced, the dropping rate was 3 drops / min, 30mL / drop, the reaction temperature was controlled at 25°C, and the reaction was carried out for 20min. The color of the solution slowly changed from light yellow to light gray, and bacitracin-streptospheric nano-platinum was obtained.

[0029] like figure 2 As shown, the diameter of the bacitracin-streptospher...

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Abstract

The invention discloses a method for synthesizing chain-globular nano platinum in a self-assembly manner by using bacitracin as a template. The method for synthesizing the chain-globular nano platinum in the self-assembly manner by using the bacitracin as the template mainly comprises the following steps of adding the bacitracin into a hydrochloric acid solution, so as to prepare an obtained first mixture into an acidic bacitracin solution of which the concentration is 0.4mM to 0.6mM, and processing the acidic bacitracin solution in a metal bath for 40min to 60min at 50 DEG C to 70 DEG C; adding a platinum tetrachloride solution of which the concentration is 4mM to 5mM into the bacitracin solution, putting an obtained second mixture into a double-layer gas bath oscillator, and incubating the obtained second mixture for 16h to 22h at a rotary speed of 100rpm to 120rpm and at a temperature of 22 DEG C to 24 DEG C; adding sodium borohydride of which the concentration is 4mM to 6mM into the obtained second mixture, and controlling a dripping speed, wherein a total addition amount is 60[mu]L to 90 [mu]L, a reaction temperature is 23 DEG C to 25 DEG C, and the reaction time is 10min to 20min, so as to prepare the chain-globular nano platinum of which the particle size is 15nm to 30nm. The method for synthesizing the chain-globular nano platinum in the self-assembly manner by using the bacitracin as the template is green and environmentally friendly, and is low in cost, simple in process and easy to operate; the prepared chain-globular nano platinum is good in dispersity, uniform in appearance and high in metal loading rate; the defects that platinum nano particles prepared under a conventional chemical process condition easily coagulate and pollute the environment are overcome.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a preparation method of a noble metal nanometer material. Background technique [0002] Nanomaterials exhibit special properties different from conventional materials in terms of optics, magnetism, electricity, chemistry, and science, such as quantum tunneling effects, surface and interface effects, and quantum size effects. These characteristics of nanomaterials provide new ideas for the development of new materials in various fields, and make nanomaterials a research hotspot in nanotechnology. [0003] Among them, as a kind of nanomaterials, platinum nanoparticles not only have the excellent properties of nanomaterials, but also have some special properties due to their own structural and electronic characteristics, such as surface plasmon resonance and antibacterial function. , good stability, antibacterial, fluorescence effect, single electron transition, etc. In addition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B82Y40/00
CPCB22F9/24B82Y40/00
Inventor 高大威王梓尹甜高发明李彦集薛伟利边可新
Owner YANSHAN UNIV
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