Preparation method of silver/silver chloride composite nanocube

A technology of nano-cubes and silver chloride, applied in chemical instruments and methods, nanotechnology, nanotechnology, etc., can solve problems such as complex preparation processes, achieve low reaction temperature, eliminate the use of organic solvents, and save costs

Pending Publication Date: 2021-01-15
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the methods for preparing silver / silver chloride composite nanocube particles are constantly emerging, but most of them are prepared by adding stabilizer polyvinylpyrrolidone (PVP), and the preparation process is complicated or carried out at a higher reaction temperature or using a large amount of organic solvents for washing Purified to obtain nanocube particles approximately 50-100 nm in size

Method used

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  • Preparation method of silver/silver chloride composite nanocube
  • Preparation method of silver/silver chloride composite nanocube
  • Preparation method of silver/silver chloride composite nanocube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Drug dosage:

[0024] Sodium lignosulfonate solution: 0mL

[0025] Sodium chloride solution: 10mL

[0026] Silver nitrate solution: 20mL

[0027] Measure 10mL of NaCl solution in a 50mL beaker and heat to 60□ under magnetic stirring. Then, 20 mL of silver nitrate solution was quickly poured into the beaker, and the reaction was stirred for 1 h. The Ag / AgCl colloidal solution that obtains uses deionized water to wash, and centrifuges 20min under 10000rpm, removes supernatant liquid, obtains silver / silver chloride composite nano cube particle after freeze-drying and carries out scanning electron microscope test (SEM) (test result See attached figure 1 )

Embodiment 2

[0029] Drug dosage:

[0030] Sodium lignosulfonate solution: 25mL

[0031] Sodium chloride solution: 10mL

[0032] Silver nitrate solution: 20mL

[0033] Measure 25mL of sodium lignosulfonate solution and 10mL of sodium chloride solution in a beaker, mix evenly under magnetic stirring, and heat to 60□; then measure 20mL of silver nitrate solution and quickly inject into the mixture, and continue to stir and react at 60□ 1h, forming a silver / silver chloride nanocomposite cube colloid solution; washing the prepared colloid solution with deionized water, and centrifuging at 10000rpm for 20min, removing the upper liquid, and obtaining silver / silver chloride composite nanocubes after freeze-drying Particles were subjected to scanning electron microscopy (SEM) (see the attached instructions for test results) figure 2 ).

Embodiment 3

[0035] Drug dosage:

[0036] Sodium lignosulfonate solution: 50mL

[0037] Sodium chloride solution: 10mL

[0038] Silver nitrate solution: 20mL

[0039] Measure 50mL of sodium lignosulfonate solution and 10mL of sodium chloride solution in a beaker under magnetic stirring, mix evenly, and heat to 60°C; then measure 20mL of silver nitrate solution and quickly inject into the mixture, and continue stirring reaction at 60°C 1h, forming a silver / silver chloride nanocomposite cube colloid solution; washing the prepared colloid solution with deionized water, and centrifuging at 10000rpm for 20min, removing the upper liquid, and obtaining silver / silver chloride composite nanocubes after freeze-drying Particles were subjected to scanning electron microscopy (SEM) (see the attached instructions for test results) image 3 ).

[0040] The test results show that when no sodium lignosulfonate is added, although Ag / AgCl cubes can be obtained, the size is very large and non-uniform. Af...

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Abstract

The invention relates to a preparation method of a silver/silver chloride composite nanocube. The silver/silver chloride composite nanocube comprises the following components: a sodium chloride solution with a concentration of 0.1-5 wt%, a silver nitrate solution with a concentration of 0.5-10 wt% and a lignosulfonate solution with a concentration of 0.5-10 wt%. The preparation method comprises the following steps: 1) weighing 1 mL to 100 mL of the lignosulfonate solution and 0.1 mL to 50 mL of the sodium chloride solution, stirring and mixing the solutions in a beaker, and carrying out heating to 30-80 DEG C; 2) measuring 0.2 mL to 100 mL of the silver nitrate solution, rapidly injecting the silver nitrate solution into the mixed solution, and continuing stirring for 1 h to 12 h at a temperature of 30 DEG C to 80 DEG C to form a silver/silver chloride composite nanocube colloidal solution; and 3) washing the prepared silver/silver chloride composite nanocube colloidal solution with deionized water, carrying out centrifugal separation at 10000 rpm for 20 min, removing supernatant liquid, and carrying out freeze drying to obtain silver/silver chloride composite nanocube particles.

Description

technical field [0001] The invention relates to a preparation method of a silver / silver chloride composite nano cube, which is mainly used in the treatment of organic pollutants and emerging pollutants, especially for the treatment of emerging pollutants. [0002] technical background [0003] In recent decades, noble metal (silver, gold, platinum, etc.) nanoparticles have been widely used in food, pharmaceutical, sensor manufacturing, biomedicine and other fields due to their good catalytic activity, electrical conductivity, unique optical properties, high specific surface area, antibacterial properties, and It has received wide attention due to its wide application. However, many metal nanoparticles are basically spherical, and it is known and reported that spherical particles have the smallest surface under a given volume and are thermodynamically very stable, so there have been many studies reporting the versatility of spherical particles. However, in recent years, nanos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/10B82Y30/00B82Y40/00
CPCB01J27/10B82Y30/00B82Y40/00
Inventor 安兴业杨健刘洪斌刘利琴张伟
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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