Silver nanoparticle-embedded carbon microsphere preparation method

A technology of silver nanoparticles and carbon microspheres, applied in the fields of botanical equipment and methods, chemicals for biological control, animal repellents, etc., can solve the problems of easy shedding, expensive equipment, raw materials, poor dispersibility, etc. To achieve the effect of good powder dispersion, price and non-toxic, not easy to fall off

Active Publication Date: 2016-06-15
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Some silver-loaded carbon materials (Appl.Surf.Sci.2014,292:480-487; Appl.Surf.Sci.2008,255:435-438; CN103548875B) and carbon-coated silver core-shell structure composites (Langmuir. 2005,21,6019-6024), its product can effectively inhibit bacterial adhesion and growth, but there are still many shortcomings: such as expensive equipment and raw materials, small loading of metal nanoparticles on the carrier, poor dispersion, easy to fall off, The introduction of organic reagents leads to materials with certain biological toxicity, etc.

Method used

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  • Silver nanoparticle-embedded carbon microsphere preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Put 2 g of camellia oleifera husk powder with a particle size of 200 mesh in deionized water and stir and swell at a constant speed for 6 hours. The solid-liquid ratio of camellia oleifera husk powder to water is 2:60 (g / mL).

[0028] 2) Put the Camellia oleifera husk powder treated in 1) in a stainless steel reaction kettle with a polytetrafluoroethylene liner, react in an oven at 230°C for 12 hours, cool naturally to room temperature, separate the obtained solids, and wash them with deionized water, After washing with ethanol for several times and drying, the hydrothermal carbon microspheres of camellia oleifera shell were obtained.

[0029] 3) Take 0.2 g of hydrothermal carbon microspheres obtained in 2) and disperse them in 30 mL of silver nitrate ethanol solution with a concentration of 5 mmol / L, and vibrate on a constant temperature shaker for 12 h under dark conditions.

[0030] 4) Put the solid-liquid mixture in 3) into a polytetrafluoroethylene-lined stainle...

Embodiment 2

[0034] 1) Put 2 g of camellia oleifera husk powder with a particle size of 200 mesh in deionized water and stir and swell at a constant speed for 6 hours. The solid-liquid ratio of camellia oleifera husk powder to water is 2:60 (g / mL).

[0035] 2) Put the Camellia oleifera husk powder treated in 1) in a stainless steel reaction kettle with a polytetrafluoroethylene liner, react in an oven at 230°C for 12 hours, cool naturally to room temperature, separate the obtained solids, and wash them with deionized water, After washing with ethanol for several times and drying, the hydrothermal carbon microspheres of camellia oleifera shell were obtained.

[0036] 3) Take 0.2 g of hydrothermal carbon microspheres obtained in 2) and disperse them in 30 mL of silver nitrate ethanol solution with a concentration of 5 mmol / L, and vibrate on a constant temperature shaker for 12 h under dark conditions.

[0037] 4) Put the solid-liquid mixture in 3) into a polytetrafluoroethylene-lined stainle...

Embodiment 3

[0040] 1) Put 2 g of camellia oleifera husk powder with a particle size of 200 mesh in deionized water and stir and swell at a constant speed for 6 hours. The solid-liquid ratio of camellia oleifera husk powder to water is 2:60 (g / mL).

[0041] 2) Put the Camellia oleifera husk powder treated in 1) in a stainless steel reaction kettle with a polytetrafluoroethylene liner, react in an oven at 230°C for 12 hours, cool naturally to room temperature, separate the obtained solids, and wash them with deionized water, After washing with ethanol for several times and drying, the hydrothermal carbon microspheres of camellia oleifera shell were obtained.

[0042] 3) Take 0.2 g of hydrothermal carbon microspheres obtained in 2) and disperse them in 30 mL of silver nitrate ethanol solution with a concentration of 5 mmol / L, and vibrate on a constant temperature shaker for 12 h under dark conditions.

[0043] 4) Put the solid-liquid mixture in 3) into a polytetrafluoroethylene-lined stainle...

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Abstract

The invention relates to a silver nanoparticle-embedded carbon microsphere preparation method. The method is characterized in that oil-tea camellia shells are uniformly dispersed in water, then are subjected to a hydrothermal reaction to obtain the hydro-thermal carbon microspheres, then the carbon microspheres are added in a silver nitrate solution, and the silver nanoparticle-embedded carbon microspheres can be obtained through a solvothermal reaction. The method process is simple, no toxic organic reagent is introduced into a preparation process, silver-carrying amount of the prepared carbon microspheres is large, and the silver nano particles have good dispersion and can be sealed in the carbon microspheres. The silver nanoparticle-embedded carbon microspheres are hopeful to be widely used as a water-purification processing agent, an air filtering agent, and a catalyst and an electrode material.

Description

technical field [0001] The invention relates to a preparation method of biomass carbon microspheres with special appearance and embedded silver nanoparticles, in particular to a preparation method of a metal-carbon composite material. Background technique [0002] Because of the process of industrialization and social development, many countries in the world are facing the serious problem of air pollution. Since the 1830s, smog has been raging for nearly a hundred years. Britain, Russia, Mexico, India, Brazil and many other countries have Or are facing the serious problem of smog. In recent years, large-scale smog has broken out in many regions of China. Nearly one-seventh of the country's land has been "swallowed" by smog. 20 cities have suffered from severe or above air pollution, which has attracted widespread attention. Smog is caused by the accumulation of a large amount of man-made pollutants under specific meteorological conditions. High concentrations of fine partic...

Claims

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Application Information

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IPC IPC(8): A01N25/08A01N25/26A01N59/16A01P1/00A01P3/00
CPCA01N25/08A01N25/26A01N59/16
Inventor 颜流水马文天郭会琴李可心
Owner NANCHANG HANGKONG UNIVERSITY
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