CN103341642B - A kind of cellulose green syt method of nano silver particles - Google Patents
A kind of cellulose green syt method of nano silver particles Download PDFInfo
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- CN103341642B CN103341642B CN201310318590.8A CN201310318590A CN103341642B CN 103341642 B CN103341642 B CN 103341642B CN 201310318590 A CN201310318590 A CN 201310318590A CN 103341642 B CN103341642 B CN 103341642B
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Abstract
The invention discloses a kind of cellulose green syt method of nano silver particles, comprise the following steps: cellulose and silver sulfate are placed in polytetrafluoroethyllining lining, add deionized water, fully stir and make it to mix; Liner loaded autoclave and puts into baking oven, at 180 ~ 210 DEG C, heating 10 ~ 24h, taking out nature cooling; Cooled product carries out centrifugal or suction filtration separation, obtains nano silver particles.The present invention does not need to introduce other chemical reagent, can utilize reproducible biomass resource, easy to operate, the nano silver particles pattern obtained and size controlled, be uniformly dispersed, soilless sticking, productive rate be high.
Description
Technical field
The invention belongs to metal nano material preparing technical field, be specifically related to a kind of cellulose green syt method of nano silver particles.
Background technology
Nano silver particles, because have the Strange properties being different from traditional silver powder, is widely used in the fields such as microelectronics industry, catalysis, photocatalysis, medicine, optics and optical material.The preparation method of current nano silver particles mainly contains physical vapor evaporation agglutination, sputtering method, laser high-temperature combustion method, mechanical milling method, electrochemical process, solution phase chemical reduction and light inducible etc.Wherein, solution phase chemical reduction, because its equipment is simple, easy to operate, pattern and feature the becomes main method that current low cost prepares nano-silver powder such as size is controlled, and utilize the method to prepare nano silver particles that is spherical, the various shape such as sheet, dendroid.But most chemical method needs to introduce more chemical reagent, there is production cost higher and may bring the problems such as certain 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 is combined with the reduction process of nano silver particles, utilize cellulosic hydrolysate glucose also originally to prepare pattern and the controlled nano silver particles of size, also there is no relevant report at present.
Summary of the invention
The object of the present invention is to provide a kind of cellulose green syt method of nano silver particles, do not need to introduce other chemical reagent, reproducible biomass resource can be utilized, easy to operate, the nano silver particles pattern obtained and size controlled, be uniformly dispersed, soilless sticking, productive rate be high.
For achieving the above object, the present invention adopts following technical scheme:
A kind of cellulose green syt method of nano silver particles comprises the following steps:
(1) cellulose and silver sulfate are placed in polytetrafluoroethyllining lining, add deionized water, fully stir and make it to mix;
(2) above-mentioned liner loaded autoclave and put into baking oven, at 180 ~ 210 DEG C, heating 10 ~ 24h, taking out nature cooling;
(3) above-mentioned cooled product is carried out centrifugal or suction filtration separation, obtain the nano silver particles that particle size distribution is even, spherical, individual particle is of a size of 50 ~ 90nm.
Described cellulose is one or more in filter paper, agricultural crop straw, husk, wheat bran, 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, easy to operate, the nano silver particles pattern obtained and size controlled, be uniformly dispersed, soilless sticking, productive rate be high.
Accompanying drawing explanation
Fig. 1 is transmission electron microscope (TEM) photo of nano silver particles prepared by embodiment 1.
Detailed description of the invention
Example is below to illustrate technical process feature of the present invention further and unrestricted the present invention.
EXAMPLE l
Take 0.04gAg respectively
2sO
4insert in 50mL polytetrafluoroethyllining lining with 0.30g filter paper (cellulose), add 30ml deionized water wherein, fully stir and make it to mix.Then liner loaded autoclave and put into baking oven, at 180 DEG C, heating 20h, then making it be cooled to room temperature; Carry out centrifugation to reacted product, with transmission electron microscope (TEM) observing response product, gained nano silver particles is spherical particle, individual particle is of a size of 50 ~ 90nm.
Embodiment 2
Take 0.04gAg respectively
2sO
4insert in 50mL polytetrafluoroethyllining lining with 0.50g filter paper (cellulose), add 30ml deionized water wherein, fully stir and make it to mix.Then liner loaded autoclave and put into baking oven, at 200 DEG C, heating 20h, then making it be cooled to room temperature; Carry out centrifugation to reacted product, with transmission electron microscope (TEM) observing response product, gained nano silver particles is spherical particle, individual particle is of a size of 70 ~ 90nm.
Embodiment 3
Take 0.04gAg respectively
2sO
4insert in 50mL polytetrafluoroethyllining lining with 0.40g filter paper (cellulose), add 30ml deionized water wherein, fully stir and make it to mix.Then liner loaded autoclave and put into baking oven, at 190 DEG C, heating 20h, then making it be cooled to room temperature; Carry out centrifugation to reacted product, with transmission electron microscope (TEM) observing response product, gained nano silver particles is spherical particle, individual particle is of a size of 60 ~ 90nm.
Embodiment 4
Take 0.03gAg respectively
2sO
4insert in 50mL polytetrafluoroethyllining lining with 0.40g filter paper (cellulose), add 30ml deionized water wherein, fully stir and make it to mix.Then liner loaded autoclave and put into baking oven, at 200 DEG C, heating 20h, then making it be cooled to room temperature; Carry out centrifugation to reacted product, with transmission electron microscope (TEM) observing response product, gained nano silver particles is spherical particle, individual particle is of a size of 70 ~ 90nm.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (3)
1. a cellulose green syt method for nano silver particles, is characterized in that: comprise the following steps:
(1) cellulose and silver sulfate are placed in polytetrafluoroethyllining lining, add deionized water, fully stir and make it to mix;
(2) above-mentioned liner loaded autoclave and put into baking oven, at 180 ~ 210 DEG C, heating 10 ~ 24h, taking out nature cooling;
(3) above-mentioned cooled product is carried out centrifugal or suction filtration separation, obtain nano silver particles;
Described cellulose is one or more in filter paper, agricultural crop straw, husk, wheat bran, bagasse.
2. the cellulose green syt method of nano silver particles according to claim 1, is characterized in that: the mass ratio of cellulose and silver sulfate is 2 ~ 20:1.
3. the cellulose green syt method of nano silver particles according to claim 1, 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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| CN103341642B true CN103341642B (en) | 2015-12-02 |
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Families Citing this family (11)
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| 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 |
| 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 |
| CN104368824B (en) * | 2014-11-14 | 2016-08-17 | 上海理工大学 | A kind of method utilizing sugarcane extract to prepare gold-silver alloy nano particle |
| CN104646682B (en) * | 2015-02-10 | 2017-01-18 | 上海理工大学 | Method for preparing gold nanoparticles by using sugarcane extracting solution |
| CN104874810B (en) * | 2015-05-11 | 2017-06-20 | 华南理工大学 | A kind of quick method for preparing nano silver colloidal sol of bagasse extract green |
| 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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