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Manganese dioxide-silver oxide composite oxide nanowire and preparation method thereof adopting single-walled carbon nanotubes as templates

A technology of single-wall carbon nanotubes and composite oxides, which is applied in nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve problems that have not been reported, and achieve the effects of low reaction temperature, simple operation, and convenient post-processing

Active Publication Date: 2011-02-09
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation of manganese dioxide-silver oxide composite oxide nanowires using single-walled carbon nanotubes as a template has not been reported so far.

Method used

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  • Manganese dioxide-silver oxide composite oxide nanowire and preparation method thereof adopting single-walled carbon nanotubes as templates
  • Manganese dioxide-silver oxide composite oxide nanowire and preparation method thereof adopting single-walled carbon nanotubes as templates
  • Manganese dioxide-silver oxide composite oxide nanowire and preparation method thereof adopting single-walled carbon nanotubes as templates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Step 1: Disperse 10 mg of single-walled carbon nanotubes in 100 mL of N-methylpyrrolidone, and then perform ultrasonic treatment (10 min to 2 h);

[0032] Step 2: Centrifuge the mixture obtained in Step 1 (100-1000rpm), discard the residual solid at the bottom, and take the mixed solution in the upper layer (that is, the suspension formed by dispersing the raw material single-walled carbon nanotubes in N-methylpyrrolidone);

[0033] Step 3: Add 20mgAgNO 3 Dissolve with 7.5mL water to form AgNO 3 aqueous solution;

[0034] Step 4: Incorporate AgNO in Step 3 3 Add the solution to the mixed solution in step 2, stir and react at 25°C for 72 hours, the reaction equation is 2AgNO 3 +2H 2 O→2AgOH+2HNO 3 → Ag 2 O+2HNO 3 +2H 2 O;

[0035] Step 5: 300mg KMnO 4 Dissolve in 5mL water to form KMnO 4 aqueous solution;

[0036] Step 6: KMnO in Step 5 4 Add the solution to the mixed solution in step 4, at 25°C for 48 hours, the reaction equation is 4KMnO 4 +3C+H2 O→4MnO ...

Embodiment 2

[0040] Step 1: Disperse 1 mg of single-walled carbon nanotubes in 100 mL of N-methylpyrrolidone, and then perform ultrasonic treatment (10 min to 2 h);

[0041] Step 2: Centrifuge the mixture obtained in Step 1 (100-1000rpm), discard the residual solid at the bottom, and take the mixed solution in the upper layer (that is, the suspension formed by dispersing the raw material single-walled carbon nanotubes in N-methylpyrrolidone);

[0042] Step 3: Add 6mg AgNO 3 Dissolve with 7.5mL water to form AgNO 3 aqueous solution;

[0043] Step 4: Incorporate AgNO in Step 3 3 Add the solution to the mixed solution in step 2, stir and react at 50°C for 24 hours, the reaction equation is 2AgNO 3 +2H 2 O→2AgOH+2HNO 3 → Ag 2 O+2HNO 3 +2H 2 O;

[0044] Step 5: 50mg KMnO 4 Dissolve in 5mL water to form KMnO 4 aqueous solution;

[0045] Step 6: KMnO in Step 5 4 Add the solution to the mixed solution in step 4, at 5°C for 72 hours, the reaction equation is 4KMnO 4 +3C+H 2 O→4MnO 2...

Embodiment 3

[0048] Step 1: Disperse 5 mg of single-walled carbon nanotubes in 100 mL of N-methylpyrrolidone, and then perform ultrasonic treatment (10 min to 2 h);

[0049] Step 2: Centrifuge the mixture obtained in Step 1 (100-1000rpm), discard the residual solid at the bottom, and take the mixed solution in the upper layer (that is, the suspension formed by dispersing the raw material single-walled carbon nanotubes in N-methylpyrrolidone);

[0050] Step 3: Add 300mgAgNO 3 Dissolve with 7.5mL water to form AgNO 3 aqueous solution;

[0051] Step 4: Incorporate AgNO in Step 3 3 Add the solution to the mixed solution in step 2, stir and react at 80°C for 10 minutes, the reaction equation is 2AgNO 3 +2H 2 O→2AgOH+2HNO 3 → Ag 2 O+2HNO 3 +2H 2 O;

[0052] Step 5: 250mg KMnO 4 Dissolve in 5mL water to form KMnO 4 aqueous solution;

[0053] Step 6: KMnO in Step 5 4 Add the solution to the mixed solution in step 4, at 80°C for 48 hours, the reaction equation is 4KMnO 4 +3C+H 2 O→4M...

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Abstract

The invention discloses a manganese dioxide-silver oxide composite oxide nanowire and a preparation method thereof adopting single-walled carbon nanotubes as templates. The preparation method of the manganese dioxide-silver oxide composite oxide nanowire comprises the following steps of: dispersing the single-walled carbon nanotubes into N-methylpyrrolidone; then carrying out ultrasonic processing; centrifugalizing an obtained mixture, discarding bottom residual solids, and extracting supernatant mixed liquor; dissolving AgNO3 into water to form an aqueous AgNO3 solution; adding the AgNO3 solution to the mixed liquor obtained from the step two, and stirring for reaction; dissolving KMnO4 into the water to form an aqueous KMnO4 solution; adding the aqueous KMnO4 solution to the mixed liquor obtained from the step four, and stirring for reaction; and centrifugalizing, washing, drying and grinding so as to obtain a manganese dioxide-silver oxide composite oxide nanowire material. The soft chemistry method is easy to operate and can be used for preparing the manganese dioxide-silver oxide composite oxide nanowire material which has excellent electrochemical property under a moderate condition.

Description

technical field [0001] The invention belongs to a preparation technology of nanometer materials, in particular to a manganese dioxide-silver oxide composite oxide nanowire and a preparation method using a single-wall carbon nanotube as a template. Background technique [0002] MnO 2 It is a widely studied multifunctional transition metal oxide, which has the advantages of environmental friendliness, low price, abundant resources, etc., and has excellent physical and chemical properties. Due to its polymorphism in morphology and richness of crystal structure (such as α, β, γ, δ, λ and other crystal forms), it is often used in catalysis, ion exchange, molecular sieve adsorption, biosensors, battery electrode materials and Energy storage and other fields. In recent years, due to the novel effects brought about by nanomaterials, people have been interested in nano-MnO 2 research is becoming more and more interesting. Especially one-dimensional MnO 2 Nanostructures, such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B82B1/00B82B3/00
Inventor 朱俊武汪信陈胜刘孝恒杨绪杰陆路德韩巧凤
Owner NANJING UNIV OF SCI & TECH
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