Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for preparing palladium nanowires by utilizing the nuclear polyhedrin protein of cotton bollworm

A nuclear polyhedron and palladium nanowire technology is applied in the field of nanomaterial preparation, which can solve the problems of insufficient green economy and mild preparation conditions, and achieve the effects of cheap raw materials, uniform morphology and high utilization rate of raw materials.

Active Publication Date: 2017-04-26
YANSHAN UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both of the above methods use organic reagents, which are not green enough and economical, and the latter needs to be heated, and the preparation conditions are not mild enough

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for preparing palladium nanowires by utilizing the nuclear polyhedrin protein of cotton bollworm
  • A method for preparing palladium nanowires by utilizing the nuclear polyhedrin protein of cotton bollworm
  • A method for preparing palladium nanowires by utilizing the nuclear polyhedrin protein of cotton bollworm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Prepare 10 mg / mL polyhedron suspension with ultrapure water, add 1 mL of alkaline hydrolysis solution for every 4 mL of polyhedron suspension, the alkaline hydrolysis solution is 0.3mol / L sodium carbonate, 0.5mol / L sodium chloride and 0.03mol / L The mixed solution of disodium ethylenediaminetetraacetate was allowed to stand for 30 minutes, and after centrifugation at 5000r / min for 5 minutes, the supernatant was sucked out, and every 5mL of the supernatant was put into an ultracentrifuge tube for ultracentrifugation. The resulting supernatant was adjusted to pH 5.8 with hydrochloric acid solution, and the polyhedron protein was precipitated out. After centrifuging at 4000r / min for 5min, the resulting precipitate was dried with a vacuum freezer (vacuum degree 80mT, -105°C) to obtain the polyhedron. protein powder.

[0018] Take 300 μL of 0.03 mg / mL polyhedrin solution, add 100 μL of 2 mM Na 2 PdCl 4 solution, adjust the pH to 5 with sodium hydroxide, mix well and incubat...

Embodiment 2

[0021] Prepare 10mg / mL polyhedron suspension with ultrapure water, add 1mL of alkaline hydrolysis solution for every 5mL polyhedron suspension, the alkaline hydrolysis solution is 0.3mol / L sodium carbonate, 0.5mol / L sodium chloride and 0.03mol / L The mixed solution of disodium ethylenediaminetetraacetate was allowed to stand for 45 minutes, and after being centrifuged at 6000r / min for 7 minutes, the supernatant was sucked out, and every 4mL of the supernatant was put into an ultracentrifuge tube for ultracentrifugation, and the ultracentrifuged The resulting supernatant was adjusted to a pH of 5.8 with hydrochloric acid solution, and the polyhedron protein was precipitated out. After centrifuging at 3000r / min for 7 minutes, the resulting precipitate was dried with a vacuum freezer (vacuum degree 80mT, -105°C) to obtain the polyhedron. protein powder.

[0022] Take 300 μL of 0.03 mg / mL polyhedrin solution, add 150 μL of 10 mM Na 2 PdCl 4 solution, adjust the pH to 6 with sodiu...

Embodiment 3

[0025] Prepare 10mg / mL polyhedron suspension with ultrapure water, add 1mL of alkaline hydrolysis solution for every 8mL polyhedron suspension, the alkaline hydrolysis solution is 0.3mol / L sodium carbonate, 0.5mol / L sodium chloride and 0.03mol / L The mixed solution of disodium ethylenediaminetetraacetate was left to stand for 50min, centrifuged at 5500r / min for 10min, the supernatant was sucked out, and each 6mL supernatant was put into an ultracentrifuge tube for ultracentrifugation. The resulting supernatant was adjusted to a pH of 5.8 with hydrochloric acid solution, and the polyhedron protein precipitated out. After centrifuging at 3500r / min for 10min, the resulting precipitate was dried with a vacuum freezer (vacuum degree 80mT, -105°C) to obtain the polyhedron. protein powder.

[0026] Take 600 μL of 0.03 mg / mL polyhedrin solution, add 150 μL of 15 mM Na 2 PdCl 4 solution, adjust the pH to 7 with sodium hydroxide, mix well and incubate in an air-bath shaker at 30°C for ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing palladium nano wires by use of heliothis armigera nuclear polyhedrin. The method mainly comprises the following steps: preparing a heliothis armigera nuclear polyhedron suspension with ultrapure water; adding the heliothis armigera nuclear polyhedron suspension into an analkaline hydrolysis liquid consisting of sodium carbonate, sodium chloride and disodium ethylenediamine tetraacetate; centrifuging, then regulating the mixture with hydrochloric acid until the mixture is faintly acid, centrifuging again, and performing vacuum freezing to obtain heliothis armigera nuclear polyhedrin; directly adding Na2PdCl4 into the heliothis armigera nuclear polyhedrin solution; and hatching in an air bath, and adding NaBH4 for reducing, thereby obtaining a nanowire net-shaped structure with diameter of 3-8 nanometers, wherein the structural composition of the nanowire net-shaped structure is uniform, and the stability is good. The raw materials used the in the method are low-cost and nontoxic, and preparation conditions are wild and simple; during a preparation process, the raw material utilization ratio is high, the prepared palladium nanowire net-shaped structure is stable, the method for preparing palladium nano wires by use of heliothis armigera nuclear polyhedrin has important application in the fields of fuel cell catalysis, automobile exhaust catalysis, biosensing and the like.

Description

technical field [0001] The invention relates to a method for preparing nanometer materials, in particular to a method for preparing noble metal meshed palladium nanowires. Background technique [0002] Because nanomaterials are in the transition region between atomic clusters and macroscopic objects, they exhibit unique optical, thermal, electrical, magnetic, mechanical and chemical properties. This makes nanomaterials have been the focus and focus of people's research and exploration since their appearance in the mid-1980s. Especially in recent years, science and technology have advanced by leaps and bounds, and the preparation and performance of nanomaterials have attracted people's attention and favor. Among them, the bulk metal palladium itself is a very important chemical material. It is expected to be used in the sensing and storage of hydrogen, the catalytic oxidation of fuel cells (alcohols, acids, etc.), and the catalytic oxidation of automobile exhaust. (CO, NO, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24
Inventor 高发明庞桂桂罗京京刘鹏孙慕雪刘辉
Owner YANSHAN UNIV
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com