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Preparation method for leaf-shaped silver chloride particle with micron structure

A micro-structure, silver chloride technology, applied in chemical instruments and methods, silver halide, chemical/physical processes, etc., can solve the problems of high-performance AgCl material constraints, achieve good photocatalytic performance, enhance stability, step simple effect

Active Publication Date: 2012-10-03
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

The limitations of the existing AgCl particle structure also restrict the preparation of high-performance AgCl materials

Method used

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  • Preparation method for leaf-shaped silver chloride particle with micron structure
  • Preparation method for leaf-shaped silver chloride particle with micron structure
  • Preparation method for leaf-shaped silver chloride particle with micron structure

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Weigh 0.0016 g FeCl with an electronic balance 3 , 0.0170 g AgNO 3 In two dry beakers, weigh 0.0670 g of PVP and place in FeCl 3 Use a graduated cylinder to measure a part of 3 ml concentrated HCl and two parts of EG solution, marked as EG1 and EG2 respectively, wherein the volume of EG1 solution is 7 ml, and the volume of EG2 solution is 10 ml.

[0019] loaded with FeCl 3 Pour the EG2 solution into the beaker of PVP, stir roughly with a glass rod and then place it on a magnetic stirrer until FeCl 3 and PVP are uniformly dispersed in EG, and the solution is yellow at this time. Pour the EG1 solution into the AgNO 3 in a beaker, stirred roughly with a glass rod and placed on a magnetic stirrer until AgNO 3 Evenly dispersed in EG, the solution is a colorless transparent liquid at this time. Under magnetic stirring, the colorless and transparent AgNO 3 The solution was evenly added dropwise to the yellow FeCl 3 and PVP mixed solution, after stirring for 1 min, add ...

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Abstract

The invention relates to the technical field of hydrothermal synthesis of photocatalytic materials, in particular to a preparation method for a leaf-shaped silver chloride particle with a micron structure. The preparation method for the leaf-shaped silver chloride particle with the micron structure comprises the following steps: through hydrothermal reduction, mixing EG solutions of AgNO3, FeCl3 and PVP, which contain concentrated HCl; performing reaction for a certain time, and then cooling the solution; extracting a sample through centrifugation, and finally obtaining the high-content and axially-symmetrical leaf-shaped AgCl particle with the micron structure. The preparation method for the leaf-shaped silver chloride particle with the micron structure is simple in step and easy and convenient to operate; a larger proportion of concentrated HCl is added, the product is in a form of AgCl crystals and people usually use an Ag elementary substance obtained from the reaction composition and the preparation method; the scanning electron microscopy shows that the structure of the AgCl crystal particle with the micron structure has an unified axially-symmetrical triangular leaf shape; and a performance test shows that the leaf-shaped silver chloride particle with the micron structure has a good performance for photocatalytically degrading organic contaminants.

Description

technical field [0001] The invention belongs to the technical field of methods for synthesizing photocatalytic materials by a hydrothermal method, and in particular relates to a method for preparing leaf-shaped micron-structured silver chloride particles. Background technique [0002] Photocatalysis has a very wide application potential in solving problems such as energy, environment and greenhouse gas treatment. Photocatalytic materials can realize functions such as photocatalytic water splitting to produce hydrogen, photodegradation of organic pollutants and photoreduction of carbon dioxide. The traditional photocatalytic material is represented by titanium dioxide, its wide band gap makes it only able to use the ultraviolet part which accounts for only 4% of sunlight; in addition, the easy recombination of photogenerated electrons and holes also reduces the quantum yield, so There is a need to develop new and efficient photocatalytic materials that can utilize sunlight in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G5/02B01J27/10B01J35/02B01J35/00
Inventor 李美成余航姜永健李晓丹
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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