Method of preparing platinum nano particles by using cotton bollworm karyotype polyhedrin

A nuclear polyhedron and cotton bollworm technology, applied in the direction of nanotechnology, can solve the problem of difficult precious metal nanoparticle attachment, and achieve the effect of regular arrangement of amino acid sequences

Inactive Publication Date: 2013-06-26
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to TiO 2 It lacks adsorption groups, and it is difficult to attach noble metal nanoparticles to its surface. Aminopropyltrimethoxysilane needs to be added to introduce NH 2- As an intermediate to connect TiO 2 with precious metal particles

Method used

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  • Method of preparing platinum nano particles by using cotton bollworm karyotype polyhedrin
  • Method of preparing platinum nano particles by using cotton bollworm karyotype polyhedrin
  • Method of preparing platinum nano particles by using cotton bollworm karyotype polyhedrin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Dissolve 0.5 g of nuclear polyhedrosis virus powder of cotton bollworm in 60 mL of ultrapure water, and ultrasonically promote its dissolution. The ultrapure water used was prepared by the PL5124-PALL ultrapure water instrument produced by Vivendi Pure Water Systems Co., Ltd., High Wycombe, UK. After centrifuging at 1000r / min for 10min, take the supernatant, and after centrifuging at 4000r / min for 30min, take the precipitate, and resuspend the precipitate with ultrapure water. Such low-speed, high-speed centrifugation was repeated 4 times until the supernatant of the last high-speed centrifugation was colorless and clear, and relatively pure polyhedrons were obtained. The obtained polyhedron was resuspended with 2 mL of cold ultrapure water, and 200 μl of alkaline solution was added for treatment for 15 min. Then use 0.5mol / L glacial acetic acid to adjust the pH to 7, centrifuge at 5000r / min for 5min and take the supernatant, centrifuge at 6000r / min for 5min to take th...

Embodiment 2

[0024]Dissolve 0.5 g of nuclear polyhedrosis virus powder of cotton bollworm in 60 mL of ultrapure water, and ultrasonically promote its dissolution. The ultrapure water used was prepared by the PL5124-PALL ultrapure water instrument produced by Vivendi Pure Water Systems Co., Ltd., High Wycombe, UK. After centrifuging at 1000r / min for 10min, take the supernatant, and after centrifuging at 4000r / min for 25min, take the precipitate, and resuspend the precipitate with ultrapure water. Such low-speed, high-speed centrifugation was repeated 4 times until the supernatant of the last high-speed centrifugation was colorless and clear, and relatively pure polyhedrons were obtained. The obtained polyhedron was resuspended with 1.5 mL of cold ultrapure water, and 200 μl of alkaline solution was added for treatment for 15 min. Then use 0.5mol / L glacial acetic acid to adjust the pH to 7, centrifuge at 5000r / min for 5min and take the supernatant, centrifuge at 6000r / min for 5min and take ...

Embodiment 3

[0027] Dissolve 0.5 g of nuclear polyhedrosis virus powder of cotton bollworm in 60 mL of ultrapure water, and ultrasonically promote its dissolution. The ultrapure water used was prepared by the PL5124-PALL ultrapure water instrument produced by Vivendi Pure Water Systems Co., Ltd., High Wycombe, UK. After centrifuging at 500r / min for 10min, take the supernatant, and after centrifuging at 4000r / min for 20min, take the precipitate, and resuspend the precipitate with ultrapure water. Such low-speed, high-speed centrifugation was repeated 3 times until the supernatant of the last high-speed centrifugation was colorless and clear, and relatively pure polyhedrons were obtained. The obtained polyhedron was resuspended with 2 mL of cold ultrapure water, and 200 μl of alkaline solution was added for treatment for 25 min. Then use 0.5mol / L glacial acetic acid to adjust the pH to 7, centrifuge at 5000r / min for 5min and take the supernatant, centrifuge at 6000r / min for 5min and take th...

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Abstract

Provided is a method of preparing platinum nano particles by using cotton bollworm karyotype polyhedrin. Inherent structural features of the cotton bollworm karyotype polyhedrin are used, a PtC14 solution is added to a purified cotton bollworm karyotype polyhedral body solution, and the precious metal platinum nano particles which are even in distribution and consistent in diameter of the particles are obtained on the surface of the cotton bollworm karyotype polyhedrin through hatch, ultrasonic wave assistance reduction treatment. Due to the fact that a cotton bollworm karyotype polyhedron carrier has natural specific structures of functional group repetitive distribution, the complex preparation technology of a conventional carrier is avoided, and therefore production cost is reduced. The sizes and distribution of the precious metal platinum nano particles are effectively controlled through control of the alkaline hydrolysis degree of the cotton bollworm karyotype polyhedron, and the method of preparing the platinum nano particles by using the cotton bollworm karyotype polyhedrin can be significantly applied to catalytic fuel cells or biosensing or the like.

Description

technical field [0001] The invention relates to a method for preparing nanomaterials, in particular to a method for preparing noble metal platinum nanoparticles. Background technique [0002] Due to the characteristics of good stability, small size effect, surface effect, optical effect and good biocompatibility, noble metal nanomaterials have important application value in the fields of optics, sensors, catalysis and biological detection and analysis, so they are becoming more and more important. more and more people's attention. In recent years, research hotspots have focused on preparing tunable new nanoparticles by controlling the size, morphology and composite structure of nanoparticles. At present, there are many preparation methods of noble metal platinum nanoparticles, but it is still difficult to obtain noble metal platinum nanoparticles with adjustable structure, shape, size, uniform distribution and good stability. [0003] In recent years, people often use diff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B82Y40/00
Inventor 高发明庞桂桂罗京京李娜侯莉
Owner YANSHAN UNIV
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