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Preparation method of Ag2E nano wire

A nanowire and compound technology, applied in the field of material chemistry, can solve the problems of high reaction temperature, a large amount of organic solvents, and high energy consumption, and achieve the effects of simple process, easy availability of raw materials, and cheap raw materials

Inactive Publication Date: 2014-05-07
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silver chalcogenide nanowires are usually synthesized by vapor phase deposition, electrochemical template method, and hydrothermal / solvothermal method. higher

Method used

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  • Preparation method of Ag2E nano wire
  • Preparation method of Ag2E nano wire
  • Preparation method of Ag2E nano wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Synthesis of silver sulfide nanowires at room temperature:

[0023] Add 100ml of deionized water into the beaker, put it into the stirring magnet and stir, weigh 2 mmol of silver nitrate and 2.8g of KOH into the beaker, then weigh 10 mmol of thioglycolic acid into the beaker, and keep stirring until the solution becomes transparent and clear ; then add 1 mmol thioacetamide and 4 mmol b-naphthalenesulfonic acid, stirring continuously; finally add 16 mmol KBH 4 , to be added to all KBH 4 After dissolving, remove the stirring magnet. Seal the mouth of the beaker with plastic wrap to prevent dust from entering, and let it stand at room temperature for 24 hours. The resulting precipitate was washed with deionized water and then centrifuged, and the centrifuged precipitate was redispersed in deionized water, centrifuged again until the pH value of the filtrate was 7, and finally washed with absolute ethanol. The centrifugal sedimentation speed is 3000 rpm. The filtered po...

Embodiment 2、3

[0026] Repeat Example 1, but replace b-naphthalenesulfonic acid with a-naphthalenesulfonic acid and 1,5-dinaphthalenesulfonic acid respectively, to obtain silver sulfide nanowire powder. The yields were 68.4% and 66.7%, respectively.

Embodiment 4

[0028] Synthesis of silver selenide nanowires at room temperature:

[0029] Add 100ml of deionized water into the beaker, put it into the stirring magnet and stir, weigh 2 mmol of silver nitrate and 2g of NaOH into the beaker, then weigh 6 mmol of mercaptopropionic acid into the beaker, and keep stirring until the solution becomes transparent and clear ; then add 1 mmol selenium dioxide and 6 mmol b-naphthalenesulfonic acid, stirring continuously; finally add 12 mmol NaBH 4 , to be added all NaBH 4 After dissolving, remove the stirring magnet. Seal the mouth of the beaker with plastic wrap to prevent dust from entering, and let it stand at room temperature for 24 hours. The resulting precipitate was washed with deionized water and then centrifuged, and the centrifuged precipitate was redispersed in deionized water, centrifuged again until the pH value of the filtrate was 7, and finally washed with absolute ethanol. The centrifugal sedimentation speed is 3000 rpm. The f...

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Abstract

The invention provides a preparation method of Ag2E nano wire, wherein, E is sulfur, or selenium and or tellurium, and the method is characterized by comprising following steps: (1) preparing materials: adding silver nitrate into a beaker containing deionized water, adding alkali, a complexing agent and a template in sequence, stirring for fully dissolving, then adding a compound containing sulfur, or selenium, or tellurium, finally adding a reducing agent, and stirring until fully dissolving; wherein, silver nitrate and the compound containing sulfur, or selenium, or tellurium are added according to the atomic ratio 2:1, and the concentration of the silver nitrate is 0.01 mol / L-0.08 mol / L; (2) carrying out a constant temperature reaction; (3) washing; (4) drying. The invention has the advantages of cheap and easily available raw materials, simple technology and easy realization of large scale production. The synthesized silver sulfide, silver selenide and silver telluride nano wire can be widely applied to fast ion conductors, nonlinear optical devices, photoelectric secondary batteries, multifunctional ion selective electrodes, phase change storage devices, thermoelectric devices, magnetic field detectors, etc.

Description

technical field [0001] The present invention relates to a kind of preparation method of nanowire, particularly relate to a kind of Ag 2 A method for preparing E nanowires, wherein E is sulfur, or selenium, or tellurium. The invention belongs to the technical field of material chemistry, Background technique [0002] Silver chalcogenides are important semiconductor materials. One-dimensional silver sulfide, silver selenide and silver telluride can be widely used in fast ion conductors, nonlinear optical devices, photoelectric secondary batteries, multifunctional ion selective electrodes, Phase-change memory devices, thermoelectric devices, magnetic field detectors and other fields. Silver chalcogenide nanowires are usually synthesized by vapor phase deposition, electrochemical template method, and hydrothermal / solvothermal method. higher. Silver selenide and silver telluride usually have reports of chemical synthesis of nanowires close to room temperature, but they need t...

Claims

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Application Information

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IPC IPC(8): C30B29/46C30B29/62C30B7/14
Inventor 汪元元尹桂林何丹农
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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