CN103341642A - Cellulose environment-friendly synthesis method of nano silver particles - Google Patents
Cellulose environment-friendly synthesis method of nano silver particles Download PDFInfo
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- CN103341642A CN103341642A CN2013103185908A CN201310318590A CN103341642A CN 103341642 A CN103341642 A CN 103341642A CN 2013103185908 A CN2013103185908 A CN 2013103185908A CN 201310318590 A CN201310318590 A CN 201310318590A CN 103341642 A CN103341642 A CN 103341642A
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Abstract
The invention discloses a cellulose environment-friendly synthesis method of nano silver particles. The cellulose environment-friendly synthesis method comprises the following steps of: placing cellulose and silver sulfate in a polytetrafluoroethylene lining, adding deionized water, fully stirring to ensure that the cellulose, the silver sulfate and the deionized water are uniformly mixed; and loading the lining in a high-pressure autoclave and placing in an oven, heating for 10-24h at a temperature of 180-210 DEG C, taking out and then naturally cooling; centrifuging or suction-filtering and separating a cooled product to obtain the nano silver particles. According to the cellulose environmental-friendly synthesis method, other chemical agents are not needed to be introduced, renewable biomass resources can be utilized, and the convenience is brought for the operation; the synthesized nano silver particles are controllable in morphology and size, uniform in dispersion, and high in yield; and the synthesized nano silver particles are not agglomerated.
Description
Technical field
The invention belongs to the metal nano material preparing technical field, be specifically related to a kind of green synthetic method of cellulose of nano silver particles.
Background technology
Nano silver particles is widely used in fields such as microelectronics industry, catalysis, photocatalysis, medicine, optics and optical material because have the unusual characteristic that is different from traditional silver powder.The preparation method of nano silver particles mainly contains physical vapor evaporation agglutination, sputtering method, laser high-temperature combustion method, mechanical milling method, electrochemical process, liquid phase chemical reduction method and photo-induction inducing defecation by enema and suppository etc. at present.Wherein, the liquid phase chemical reduction method, because characteristics such as its equipment is simple, easy to operate, pattern and controllable size become the main method of present low-cost preparation nano-silver powder, and utilize the method to prepare the nano silver particles of different shapes such as sphere, sheet, dendroid.But most chemical methods need be introduced more chemical reagent, exist production cost higher and may bring certain problems such as environmental pollution.
Cellulose is a kind of polysaccharide that distributed in nature is the widest, content is maximum, is renewable resource the abundantest on the earth.Cellulose series biomass mainly comprises discarded object and residue (as agricultural crop straw, husk, wheat bran, bagasse etc.), forest (cork and hardwood) and forestry processing waste, the careless class etc. of agricultural production.By hydro-thermal reaction system, the hydrolysis of lignocellulosic and the reduction process of nano silver particles are combined, utilize cellulosic hydrolysate glucose also to prepare the nano silver particles of pattern and controllable size originally, also there is not relevant report at present.
Summary of the invention
The object of the present invention is to provide a kind of green synthetic method of cellulose of nano silver particles, do not need to introduce other chemical reagent, can utilize reproducible biomass resource, easy to operate, the nano silver particles pattern that obtains and controllable size, be uniformly dispersed, do not have reunion, productive rate height.
For achieving the above object, the present invention adopts following technical scheme:
The green synthetic method of a kind of cellulose of nano silver particles may further comprise the steps:
(1) cellulose and silver sulfate are placed polytetrafluoroethyllining lining, add deionized water, fully stirring makes it to mix;
(2) above-mentioned liner is packed into autoclave and put into baking oven at 180 ~ 210 ℃ of heating 10 ~ 24h down, takes out the nature cooling;
(3) carry out above-mentioned cooled product centrifugal or suction filtration separates, obtain that granularity is uniformly dispersed, spherical, nano silver particles that individual particle is of a size of 50 ~ 90nm.
Described cellulose is one or more in filter paper, agricultural crop straw, husk, wheat bran, the bagasse.
The mass ratio of cellulose and silver sulfate is 2 ~ 20:1.
The addition of deionized water is 50 ~ 80% of polytetrafluoroethyllining lining volume.
Remarkable advantage of the present invention is: do not need to introduce other chemical reagent, can utilize reproducible biomass resource, and easy to operate, the nano silver particles pattern that obtains and controllable size, be uniformly dispersed, do not have reunion, productive rate height.
Description of drawings
Fig. 1 is transmission electron microscope (TEM) photo of the nano silver particles of embodiment 1 preparation.
The specific embodiment
Following example is unrestricted the present invention in order further to illustrate technical process feature of the present invention.
EXAMPLE l
Take by weighing 0.04g Ag respectively
2SO
4Insert in the 50mL polytetrafluoroethyllining lining with 0.30g filter paper (cellulose), to wherein adding the 30ml deionized water, fully stirring makes it to mix.Then liner is packed into autoclave and put into baking oven at 180 ℃ of heating 20h down, makes it be cooled to room temperature then; Reacted product is carried out centrifugation, and with transmission electron microscope (TEM) observing response product, the gained nano silver particles is that spherical particle, individual particle are of a size of 50 ~ 90nm.
Embodiment 2
Take by weighing 0.04g Ag respectively
2SO
4Insert in the 50mL polytetrafluoroethyllining lining with 0.50g filter paper (cellulose), to wherein adding the 30ml deionized water, fully stirring makes it to mix.Then liner is packed into autoclave and put into baking oven at 200 ℃ of heating 20h down, makes it be cooled to room temperature then; Reacted product is carried out centrifugation, and with transmission electron microscope (TEM) observing response product, the gained nano silver particles is that spherical particle, individual particle are of a size of 70 ~ 90nm.
Embodiment 3
Take by weighing 0.04g Ag respectively
2SO
4Insert in the 50mL polytetrafluoroethyllining lining with 0.40g filter paper (cellulose), to wherein adding the 30ml deionized water, fully stirring makes it to mix.Then liner is packed into autoclave and put into baking oven at 190 ℃ of heating 20h down, makes it be cooled to room temperature then; Reacted product is carried out centrifugation, and with transmission electron microscope (TEM) observing response product, the gained nano silver particles is that spherical particle, individual particle are of a size of 60 ~ 90nm.
Embodiment 4
Take by weighing 0.03g Ag respectively
2SO
4Insert in the 50mL polytetrafluoroethyllining lining with 0.40g filter paper (cellulose), to wherein adding the 30ml deionized water, fully stirring makes it to mix.Then liner is packed into autoclave and put into baking oven at 200 ℃ of heating 20h down, makes it be cooled to room temperature then; Reacted product is carried out centrifugation, and with transmission electron microscope (TEM) observing response product, the gained nano silver particles is that spherical particle, individual particle are of a size of 70 ~ 90nm.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (4)
1. the green synthetic method of the cellulose of a nano silver particles is characterized in that: may further comprise the steps:
(1) cellulose and silver sulfate are placed polytetrafluoroethyllining lining, add deionized water, fully stirring makes it to mix;
(2) above-mentioned liner is packed into autoclave and put into baking oven at 180 ~ 210 ℃ of heating 10 ~ 24h down, takes out the nature cooling;
(3) carry out above-mentioned cooled product centrifugal or the suction filtration separation, obtain nano silver particles.
2. the green synthetic method of the cellulose of nano silver particles according to claim 1, it is characterized in that: described cellulose is one or more in filter paper, agricultural crop straw, husk, wheat bran, the bagasse.
3. the green synthetic method of the cellulose of nano silver particles according to claim 1, it is characterized in that: the mass ratio of cellulose and silver sulfate is 2 ~ 20:1.
4. the green synthetic method of the cellulose of nano silver particles according to claim 1, it is characterized in that: the addition of deionized water is 50 ~ 80% of polytetrafluoroethyllining lining volume.
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| CN201310318590.8A CN103341642B (en) | 2013-07-26 | 2013-07-26 | A kind of cellulose green syt method of nano silver particles |
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| CN201310318590.8A CN103341642B (en) | 2013-07-26 | 2013-07-26 | A kind of cellulose green syt method of nano silver particles |
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| CN103341642A true CN103341642A (en) | 2013-10-09 |
| CN103341642B CN103341642B (en) | 2015-12-02 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752847A (en) * | 2014-01-25 | 2014-04-30 | 华南理工大学 | Method for preparing hemicellulose/nano-silver colloid rapidly |
| CN103785857A (en) * | 2014-02-25 | 2014-05-14 | 南开大学 | Nano-silver used for anti-microbial dressing and preparation method thereof |
| CN103785852A (en) * | 2014-01-25 | 2014-05-14 | 华南理工大学 | Nanometer silver-nanocrystalline cellulose compound, preparation method of nanometer silver-nanocrystalline cellulose compound, and application of nanometer silver-nanocrystalline cellulose compound |
| CN103934473A (en) * | 2014-05-14 | 2014-07-23 | 莆田学院 | Method for preparing water-solubility precious metal nano-particles with waste crops |
| CN104368824A (en) * | 2014-11-14 | 2015-02-25 | 上海理工大学 | Method for manufacturing gold-solver alloy nanometer particles through sugarcane extract |
| CN104646682A (en) * | 2015-02-10 | 2015-05-27 | 上海理工大学 | Method for preparing gold nanoparticles by using sugarcane extracting solution |
| CN104874810A (en) * | 2015-05-11 | 2015-09-02 | 华南理工大学 | Green quick method for preparing nano-silver sol using bagasse extract |
| CN106825607A (en) * | 2017-02-24 | 2017-06-13 | 华中农业大学 | A kind of method by photoinduction maize straw extract synthesizing nano-silver |
| CN106903326A (en) * | 2017-01-23 | 2017-06-30 | 华南理工大学 | Preparation method, UV type Nano silver conductive inks of spherical Nano Silver and preparation method thereof |
| CN108326321A (en) * | 2018-03-12 | 2018-07-27 | 莆田学院 | A method of utilizing plant polyose synthesizing water-solubility duplex metal alloy nano particle |
| CN109997871A (en) * | 2019-03-27 | 2019-07-12 | 华南理工大学 | A kind of hydro-thermal carbon ball of one-step method loading nano silvery and the preparation method and application thereof |
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| CN103785852A (en) * | 2014-01-25 | 2014-05-14 | 华南理工大学 | Nanometer silver-nanocrystalline cellulose compound, preparation method of nanometer silver-nanocrystalline cellulose compound, and application of nanometer silver-nanocrystalline cellulose compound |
| CN103752847A (en) * | 2014-01-25 | 2014-04-30 | 华南理工大学 | Method for preparing hemicellulose/nano-silver colloid rapidly |
| CN103785852B (en) * | 2014-01-25 | 2016-08-17 | 华南理工大学 | A kind of nanometer silver-nano micro crystal cellulose complex and preparation method and application |
| CN103752847B (en) * | 2014-01-25 | 2016-03-02 | 华南理工大学 | A kind of fast preparation method of hemicellulose/nano silver colloidal sol |
| CN103785857B (en) * | 2014-02-25 | 2016-02-24 | 南开大学 | A kind of Nano Silver for antiseptic dressing and preparation method |
| CN103785857A (en) * | 2014-02-25 | 2014-05-14 | 南开大学 | Nano-silver used for anti-microbial dressing and preparation method thereof |
| CN103934473A (en) * | 2014-05-14 | 2014-07-23 | 莆田学院 | Method for preparing water-solubility precious metal nano-particles with waste crops |
| CN103934473B (en) * | 2014-05-14 | 2016-02-17 | 莆田学院 | A kind of method utilizing waste agronomic crop to prepare water-soluble precious metal nano particle |
| CN104368824A (en) * | 2014-11-14 | 2015-02-25 | 上海理工大学 | Method for manufacturing gold-solver alloy nanometer particles through sugarcane extract |
| CN104646682A (en) * | 2015-02-10 | 2015-05-27 | 上海理工大学 | Method for preparing gold nanoparticles by using sugarcane extracting solution |
| CN104874810A (en) * | 2015-05-11 | 2015-09-02 | 华南理工大学 | Green quick method for preparing nano-silver sol using bagasse extract |
| CN106903326A (en) * | 2017-01-23 | 2017-06-30 | 华南理工大学 | Preparation method, UV type Nano silver conductive inks of spherical Nano Silver and preparation method thereof |
| CN106825607A (en) * | 2017-02-24 | 2017-06-13 | 华中农业大学 | A kind of method by photoinduction maize straw extract synthesizing nano-silver |
| CN108326321A (en) * | 2018-03-12 | 2018-07-27 | 莆田学院 | A method of utilizing plant polyose synthesizing water-solubility duplex metal alloy nano particle |
| CN109997871A (en) * | 2019-03-27 | 2019-07-12 | 华南理工大学 | A kind of hydro-thermal carbon ball of one-step method loading nano silvery and the preparation method and application thereof |
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