Radiation synthesizing method for cadminium sulfide coated carbon nano tube composite nano material

A nanotube composite and nanomaterial technology, which is applied to the irradiation synthesis of nano-cadmium sulfide-coated carbon nanotube composite nanomaterials and the preparation of heterogeneous nanocomposites, can solve the problems of low reaction efficiency and low output, and achieve The process is simple, the reaction time is short, and the safety is good.

Inactive Publication Date: 2007-11-14
SHANGHAI UNIV
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AI Technical Summary

Problems solved by technology

These preparation methods often need more than 24 hours of reaction time, the reaction efficiency is low, and the output is also less

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment one: first acidify the carbon nanotubes with the mixed acid of concentrated sulfuric acid and concentrated nitric acid, and treat the carbon nanotubes with ultrasonic waves for 6 hours; the proportioning of the mixed acid is concentrated sulfuric acid: concentrated nitric acid=3: 1 (volume ratio); then The acidified carbon nanotubes were ultrasonically dispersed in deionized water; then the pH value of the solution was adjusted to 8 with potassium hydroxide solution; a certain amount of potassium chloride and sodium thiosulfate pentahydrate were weighed with an electronic balance, respectively It is dissolved in deionized water, and when the two solutions are prepared, the molar ratio of the cadmium ion concentration to the sulfur atom concentration is 1:1; then they are sequentially added to the above-mentioned carbon nanotube solution.

[0017] Then, add the surfactant polyvinyl alcohol 10ml / 100ml to the above solution, and place it in an ultrasonic oscillat...

Embodiment 2

[0021] Embodiment two: first acidify the carbon nanotubes with the mixed acid of concentrated sulfuric acid and concentrated nitric acid, and treat the carbon nanotubes with ultrasonic waves for 6 hours; the proportioning of the mixed acid is concentrated sulfuric acid: concentrated nitric acid=3: 1 (volume ratio); then The acidified carbon nanotubes were ultrasonically dispersed in deionized water; then the pH value of the solution was adjusted to 8 with potassium hydroxide solution; a certain amount of potassium chloride and sodium thiosulfate pentahydrate were weighed with an electronic balance, respectively It is dissolved in deionized water, and when the two solutions are prepared, the molar ratio of the cadmium ion concentration to the sulfur atom concentration is 1:3; then they are sequentially added to the above-mentioned carbon nanotube solution.

[0022] Then, add 20ml / 100ml of surfactant polyvinyl alcohol to the above solution, and place it in an ultrasonic oscillato...

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Abstract

The invention relates to a kind of irradiation synthetic method of carbon nanophase pipe compound nanophase covered by nanophase cadmium sulfide, the invention belongs to nanophase synthetic material and radiation chemical technological field. The preparation method of this invention is as follows: acidify carbon nanophase pipe with mixed acid of oil of vitriol and dense nitric acid firstly, then disperse its ultrasonic into de-ionized water and it forms solution, regulate pH value to 8-1 with KOH, put cadmium chloride and hypo into carbon nanophase pipe solution in turn; then accede to surface active agent--polyvinyl alcohol and surge it with ultrasonic to make it disperse evenly, rejoin isopropanol which is a kind of oxidizability free radical scavenger; then set the solution prepared above in the produced by microtron of 2.5MeV and 40mA to irradiate; the irradiation agent is 150-300KGy; Then absterge the product with ethanol, and separate them with centrifugal machine, after being dried, we finally get carbon nanophase compounding nanophase material covered by nanophase cadmium sulfide.

Description

technical field [0001] The invention relates to the preparation of heterogeneous nano-composite materials, in particular to an irradiation synthesis method of nano-cadmium sulfide-coated carbon nanotube composite nano-materials. It belongs to the technical field of nanocomposite materials and radiation chemistry. Background technique [0002] Due to its unique structure and unique physical and chemical properties, carbon nanotubes have become one of the research hotspots worldwide. On the basis of the gradual maturity of the synthesis method of carbon nanotubes and the gradual improvement of the chemical modification and characterization methods of carbon nanotubes, people have tried to connect metal or semiconductor nanoclusters to carbon nanotubes, aiming to construct high-level nanotubes with Composite devices with new properties, new effects and new applications. [0003] Semiconductor nanoparticles such as nano SnO 2 , Nano ZnS, Nano SiO 2 , nano-CdSe, etc. have bee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
Inventor 吴明红赵兵王昊博陈凯栾启夏焦正
Owner SHANGHAI UNIV
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