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Polypyrrole/silver@silver chloride core-shell structure nano wire, and preparation method and application thereof

A silver-silver chloride, core-shell structure technology, applied in the direction of chemical reaction of materials for analysis, material electrochemical variables, chemiluminescence/bioluminescence, etc., can solve problems such as limiting visible light absorption and reducing solar light utilization. , to achieve the effects of good selectivity, improved photocurrent conversion efficiency, and fast response

Active Publication Date: 2014-09-10
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ultra-broad energy band of silver chloride limits its absorption of visible light and reduces the utilization rate of sunlight

Method used

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  • Polypyrrole/silver@silver chloride core-shell structure nano wire, and preparation method and application thereof
  • Polypyrrole/silver@silver chloride core-shell structure nano wire, and preparation method and application thereof
  • Polypyrrole/silver@silver chloride core-shell structure nano wire, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Synthesis of silver nanowires

[0038] Silver nanowires were prepared by an improved polyol reduction method, adding 15ml of ethylene glycol solution with polyvinylpyrrolidone mass concentration of 0.0065g / ml into a three-necked flask, and placing it in an oil bath at 160°C Heat in the pot for 5 minutes. Then, AgNO was added to the three-necked flask 3 2ml of ethylene glycol solution with a concentration of 0.25M was added, followed by 0.3ml of 0.05M NaCl solution, and heated at 160°C for 15 minutes. Stirring is required throughout the process. The product was first washed three times with acetone to remove ethylene glycol and remaining polyvinylpyrrolidone, then washed three times with distilled water to remove acetone, and the rotating speed of the centrifuge was 2000 rpm.

[0039] (2) Preparation of silver silver chloride nanowires

[0040] The previously synthesized silver nanowires were added to 2ml of 0.1M NaCl solution, and then Fe sheets (1cm×3cm) treate...

Embodiment 2

[0045] (1) Synthesis of silver nanowires

[0046] Silver nanowires were prepared by an improved polyalcohol reduction method, adding 15ml of ethylene glycol solution with a mass concentration of polyvinylpyrrolidone of 0.005g / ml into a three-necked flask, and placing it in an oil bath at 160°C Heat in the pot for 5 minutes. Then, AgNO was added to the three-necked flask 3 2ml of ethylene glycol solution with a concentration of 0.25M was added, followed by 0.3ml of 0.05M NaCl solution, and heated at 160°C for 15 minutes. Stirring is required throughout the process. The product was first washed three times with acetone to remove ethylene glycol and remaining polyvinylpyrrolidone, then washed three times with distilled water to remove acetone, and the rotating speed of the centrifuge was 2000 rpm.

[0047] (2) Preparation of silver silver chloride nanowires

[0048] The specific operation is the same as the preparation of (2) silver silver chloride nanowires in Example 1.

...

Embodiment 3

[0052] (1) Synthesis of silver nanowires

[0053] Silver nanowires are prepared by an improved polyol reduction method, adding 15ml of ethylene glycol solution with a mass concentration of polyvinylpyrrolidone of 0.01g / ml into a three-necked flask, and placing it in an oil bath at 160°C Heat in the pot for 5 minutes. Then, AgNO was added to the three-necked flask 3 2ml of ethylene glycol solution with a concentration of 0.25M was added, followed by 0.3ml of 0.05M NaCl solution, and heated at 160°C for 15 minutes. Stirring is required throughout the process. The product was first washed three times with acetone to remove ethylene glycol and remaining polyvinylpyrrolidone, and then washed three times with distilled water to remove acetone, and the rotating speed of the centrifuge was 2000 rpm.

[0054] (2) Preparation of silver silver chloride nanowires

[0055] The specific operation is the same as the preparation of (2) silver silver chloride nanowires in Example 1.

[00...

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Abstract

The invention provides a polypyrrole / silver@silver chloride core-shell structure nano wire, and a preparation method and application thereof. A silver@silver chloride core-shell structure nano wire is synthesized by a two-step etching method at first; the silver@silver chloride nano wire is coupled with polypyrrole to prepare the polypyrrole / silver@silver chloride core-shell structure nano wire; the polypyrrole / silver@silver chloride core-shell structure nano wire has application potential in development of a photoelectric chemical sensor. Compared with the prior art, the silver nano wire disclosed by the invention can quickly transfer electrons and effectively stop recombination of electrons and holes; due to polypyrrole, an absorption range of an electrode to visible light is expanded, and the light current conversion efficiency is improved. By detection on pyrogallol, a polypyrrole / silver@silver chloride photoelectric chemical sensor has the advantages of quick response, high sensitivity, high selectivity and the like.

Description

technical field [0001] The invention belongs to the field of synthesis methods of polymer / metal metal semiconductor core-shell nano-heterostructures, and in particular relates to a polypyrrole / silver silver chloride core-shell nanowire electrode, a preparation method and an application thereof. Background technique [0002] Metal-based semiconductor nanomaterials have received a lot of attention in the fields of photocatalysis, electrocatalysis, and energy conversion. Because most semiconductor photocatalysts are limited by their low photocatalytic efficiency in the visible region or their low charge transfer ability. In order to break through these bottlenecks, metal-semiconductor heterogeneous materials have emerged. [0003] Metal-semiconductor heterogeneous photocatalysts can effectively improve photocatalytic efficiency, because metal heterogeneous materials can accelerate electron transfer, disperse charges on the surface of semiconductor materials, and effectively hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N21/76
Inventor 张小俊汪玲玲
Owner ANHUI NORMAL UNIV
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