CN108817417A - Preparation method of sphere-like nano silver sheet cluster - Google Patents
Preparation method of sphere-like nano silver sheet cluster Download PDFInfo
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- CN108817417A CN108817417A CN201810867437.3A CN201810867437A CN108817417A CN 108817417 A CN108817417 A CN 108817417A CN 201810867437 A CN201810867437 A CN 201810867437A CN 108817417 A CN108817417 A CN 108817417A
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 238000002360 preparation method Methods 0.000 title claims abstract description 33
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims abstract description 43
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910001961 silver nitrate Inorganic materials 0.000 claims abstract description 25
- 238000005406 washing Methods 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 15
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 14
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 14
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 14
- 239000011259 mixed solution Substances 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 239000000243 solution Substances 0.000 claims description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 239000008367 deionised water Substances 0.000 claims description 22
- 229910021641 deionized water Inorganic materials 0.000 claims description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- 238000013019 agitation Methods 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 239000003112 inhibitor Substances 0.000 claims description 10
- 230000004048 modification Effects 0.000 claims description 10
- 238000012986 modification Methods 0.000 claims description 10
- RECVMTHOQWMYFX-UHFFFAOYSA-N oxygen(1+) dihydride Chemical compound [OH2+] RECVMTHOQWMYFX-UHFFFAOYSA-N 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 abstract description 4
- 239000000654 additive Substances 0.000 abstract description 3
- 230000000996 additive effect Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000035484 reaction time Effects 0.000 abstract description 3
- 238000009776 industrial production Methods 0.000 abstract 1
- 238000001000 micrograph Methods 0.000 description 14
- 239000003643 water by type Substances 0.000 description 14
- 235000015165 citric acid Nutrition 0.000 description 13
- 238000000034 method Methods 0.000 description 11
- 238000001338 self-assembly Methods 0.000 description 11
- 229910052709 silver Inorganic materials 0.000 description 9
- 239000004332 silver Substances 0.000 description 9
- 241000209094 Oryza Species 0.000 description 7
- 235000007164 Oryza sativa Nutrition 0.000 description 7
- 235000009566 rice Nutrition 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002086 nanomaterial Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 3
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000031709 bromination Effects 0.000 description 1
- 238000005893 bromination reaction Methods 0.000 description 1
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- JMGZBMRVDHKMKB-UHFFFAOYSA-L disodium;2-sulfobutanedioate Chemical compound [Na+].[Na+].OS(=O)(=O)C(C([O-])=O)CC([O-])=O JMGZBMRVDHKMKB-UHFFFAOYSA-L 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- -1 meanwhile Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 150000003378 silver Chemical class 0.000 description 1
- 239000012279 sodium borohydride Substances 0.000 description 1
- 229910000033 sodium borohydride Inorganic materials 0.000 description 1
- 235000015393 sodium molybdate Nutrition 0.000 description 1
- 239000011684 sodium molybdate Substances 0.000 description 1
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
Abstract
The invention discloses a preparation method of a sphere-like nano silver sheet cluster, which is characterized by comprising the following steps: mixing silver nitrate with the concentration of 0.8-6% and citric acid with the concentration of 0.3-2.0%, stirring for 5-10 minutes, adding ferrous sulfate with the concentration of 1.6-8.0% into the mixed solution, magnetically stirring for 1-2 hours at the stirring speed of 550 r/min, and after the reaction is finished, performing centrifugal washing on the product to obtain the spheroidal nano silver sheet cluster. The preparation method is simple and easy to operate, the reaction is carried out in aqueous solution at room temperature, no special additive or template is used, the reaction time is short, the cost and the energy consumption are low, and the industrial production can be realized.
Description
Technical field
The present invention relates to a kind of preparation methods of Silver Clusters, with the preparation side for being a kind of near-spherical nano silver slice cluster
Method.
Background technique
Nano silver is a kind of very important precious metal material, and the characteristic of nano silver and its size and shape are closely related,
Therefore, the morphology and size control research of nano silver is always one of the hot spot of nano materials research.
Currently, spherical nano-Ag particles and nano-silver thread control synthesis have obtained good progress, and realize production
Industry.But control synthesizing nano-silver piece still has certain difficulty.In general, with polyvinylpyrrolidone, cetyl bromination
Ammonium or diisooctyl sodium sulfosuccinate etc. are coating material, are prepared using Photoinduced conversion method, template and solwution method etc.
Nano silver slice.Wherein Photoinduced conversion method and template operation are more complicated, and yield is lower.Solwution method yield is high, at low cost,
It is the current main method studied and apply.105268995 A of Chinese patent CN（A kind of preparation method of nano silver slice）In adopt
It is raw material with silver nitrate, polyvinylpyrrolidone is coating material, sodium borohydride is reducing agent, water-soluble in 0-60 DEG C of polyalcohol
Reaction prepares nano silver slice in liquid.105127448 A of Chinese patent CN（A kind of room temperature preparation of overlarge area nano silver slice
Method）In report with silver nitrate, PVP, FeSO4With dilute H2SO4For raw material, magnetic agitation reaction 3-6h prepares nanometer at room temperature
Silver strip.
Nano material has self assembly characteristic due to special surface features.The self assembly of nano material refers to surface
The nano particle basic structural unit of characteristic, which passes through, spontaneously forms or is collected as a stabilization, tool under non-covalent interaction
There is the structure of certain regular geometric appearance.Self assembling process is not a large amount ofAtom, ion, weak force is simple between molecule
Superposition, but spontaneous generation simultaneously be associated with and gathers to form that one is close and orderly or standard has between several body
The structural body of sequence is a kind of whole complicated synergistic effect.It can be obtained using the self assembly characteristic of nano material a variety of multiple
Miscellaneous structural body, to assign material special function.108190957 A of Chinese patent CN（A kind of flower-shaped cerous molybdate nanometer rods
The preparation method of cluster）In report and prepared using sodium molybdate, cerous nitrate, polyethylene glycol and water as raw material in 90 DEG C of water-bath 0.5-8h
Flower-shaped cerous molybdate nanometer rods cluster.
It is many about the report for preparing nano silver slice method at present, but nano silver slice self-assembled structures research report compared with
Few, the especially research in terms of the synthesis of near-spherical nano silver slice cluster has not been reported.
Summary of the invention
It is an object of the invention to by regulation, a kind of simple process is provided, operation is easy, low-cost type ball
The preparation method of shape nano silver slice cluster.Reaction is carried out in the aqueous solution of room temperature condition, without special additive, template, instead
Short between seasonable, cost and energy consumption are low, it can be achieved that industrialized production.
The present invention uses following technical scheme：
A kind of preparation method of near-spherical nano silver slice cluster, which is characterized in that include the following steps：
（1）It weighs silver nitrate solid to be dissolved in water ion water, is configured to silver nitrate solution；
（2）It weighs citric acid solid to be dissolved in deionized water, is configured to surface modification agent solution；
（3）It weighs ferrous sulfate solid to be dissolved in deionized water, is configured to inhibitor solution；
（4）At room temperature, by step（2）The solution of preparation is added to（1）In, after stirring 5-10 minutes, by step（3）System
Standby solution is added rapidly in above-mentioned mixed solution, under the mixing speed of 550 r/min, magnetic agitation 1-2 hours；
（5）After the reaction was completed, product is centrifuged, first with deionized water centrifuge washing 3 times, then with ethanol washing 2 times, i.e.,
Near-spherical nano silver slice cluster is obtained, the spherical nano silver slice cluster is distributed in deionized water and is saved.
The preparation method of above-mentioned near-spherical nano silver slice cluster, it is characterised in that：
In the mixed solution, silver nitrate concentration 0.8%-6%；Citric acid concentration is 0.3%-2.0%；Ferrous sulfate concentration is
1.6%-8.0%。
Use ferrous sulfate for reducing agent and inhibitor in the present invention, Fe2+By Ag+It is reduced into Ag, Fe2+Then it is oxidized to
Fe3+；Citric acid is adsorbed on Ag particular crystal plane as coating material, meanwhile, citric acid also has reduction reaction and regulation system
Middle Fe2+The effect of reducing power can control Ag atomic nucleation and growth rate in system, to be conducive to Ag nanometers of growth
Piece.
Compared with prior art, the beneficial effects of the present invention are：
The present invention uses common silver nitrate, ferrous sulfate and citric acid for raw material, and magnetic agitation has synthesized spherical at room temperature
Nano silver slice cluster.Spherical nano silver slice cluster diameter 200-500 nm, by thickness 10-30 nm, size 70-150 nm's
Nano silver slice is self-assembly of.
Preparation method of the invention is simple, easily operated, reaction is to carry out in the aqueous solution of room temperature condition, add without special
Add agent, template, the reaction time is short, and cost and energy consumption are low, it can be achieved that industrialized production.
Detailed description of the invention
Fig. 1 is the electron scanning micrograph of product in the embodiment of the present invention 1.
Fig. 2 is the X ray diffracting spectrum of product in the embodiment of the present invention 1.
Fig. 3 is the electron scanning micrograph of product in the embodiment of the present invention 2.
Fig. 4 is the electron scanning micrograph of product in the embodiment of the present invention 3.
Fig. 5 is the electron scanning micrograph of product in the embodiment of the present invention 4.
Fig. 6 is the electron scanning micrograph of product in the embodiment of the present invention 5.
Fig. 7 is the electron scanning micrograph of product in the embodiment of the present invention 6.
Fig. 8 is the electron scanning micrograph of product in the embodiment of the present invention 7.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to the embodiment of the present invention, to this hair
Technical solution in bright embodiment is clearly and completely described.Described embodiments are some of the embodiments of the present invention, and
The embodiment being not all of.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work
Under the premise of every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment 1：
（1）It weighs 4 grams of silver nitrates and is dissolved in 100 milliliters and go in water ion water, be configured to silver nitrate solution；
（2）It weighs 0.75 gram of citric acid to be dissolved in 50 ml deionized waters, is configured to surface modification agent solution；
（3）It weighs 5 grams of ferrous sulfate to be dissolved in 100 ml deionized waters, is configured to inhibitor solution；
（4）At room temperature, by step（2）The solution of preparation is added to（1）In, it stirs after five minutes, by step（3）Preparation
Solution be added rapidly in above-mentioned mixed solution, under the mixing speed of 550 r/min, magnetic agitation 2 hours；
（5）After the reaction was completed, product is centrifuged, first with deionized water centrifuge washing 3 times, then with ethanol washing 2 times, i.e.,
Near-spherical nano silver slice cluster is obtained, the spherical nano silver slice cluster is distributed in deionized water and is saved；
（6）The electron scanning micrograph of product prepared by the present embodiment is as shown in Figure 1, it can be seen that product is spherical receives
Rice silver strip cluster, cluster diameter 200-500 nm, by thickness 10-30 nm, the nano silver slice self assembly shape of size 70-150 nm
At；
(7) X-ray diffractogram of product prepared by the present embodiment shows made as shown in Fig. 2, contrast with silver-colored standard diagram
Standby product is silver.
Embodiment 2:
（1）It weighs 5 grams of silver nitrates and is dissolved in 100 milliliters and go in water ion water, be configured to silver nitrate solution；
（2）It weighs 1.0 grams of citric acids to be dissolved in 50 ml deionized waters, is configured to surface modification agent solution；
（3）It weighs 5 grams of ferrous sulfate to be dissolved in 100 ml deionized waters, is configured to inhibitor solution；
（4）At room temperature, by step（2）The solution of preparation is added to（1）In, it stirs after five minutes, by step（3）Preparation
Solution be added rapidly in above-mentioned mixed solution, under the mixing speed of 550 r/min, magnetic agitation 2 hours；
（5）After the reaction was completed, product is centrifuged, first with deionized water centrifuge washing 3 times, then with ethanol washing 2 times, i.e.,
Near-spherical nano silver slice cluster is obtained, the spherical nano silver slice cluster is distributed in deionized water and is saved；
（6）The electron scanning micrograph of product prepared by the present embodiment is as shown in Figure 3, it can be seen that product is spherical receives
Rice silver strip cluster, cluster diameter 200-500 nm, by thickness 10-30 nm, the nano silver slice self assembly shape of size 70-150 nm
At.
Embodiment 3：
（1）It weighs 5 grams of silver nitrates and is dissolved in 100 milliliters and go in water ion water, be configured to silver nitrate solution；
（2）It weighs 1.5 grams of citric acids to be dissolved in 50 ml deionized waters, is configured to surface modification agent solution；
（3）It weighs 5 grams of ferrous sulfate to be dissolved in 100 ml deionized waters, is configured to inhibitor solution；
（4）At room temperature, by step（2）The solution of preparation is added to（1）In, it stirs after five minutes, by step（3）Preparation
Solution be added rapidly in above-mentioned mixed solution, under the mixing speed of 550 r/min, magnetic agitation 2 hours；
（5）After the reaction was completed, product is centrifuged, first with deionized water centrifuge washing 3 times, then with ethanol washing 2 times, i.e.,
Near-spherical nano silver slice cluster is obtained, the spherical nano silver slice cluster is distributed in deionized water and is saved；
（6）The electron scanning micrograph of product prepared by the present embodiment is as shown in Figure 4, it can be seen that product is spherical receives
Rice silver strip cluster, cluster diameter 200-500 nm, by thickness 10-30 nm, the nano silver slice self assembly shape of size 70-150 nm
At.
Embodiment 4：
（1）It weighs 5 grams of silver nitrates and is dissolved in 100 milliliters and go in water ion water, be configured to silver nitrate solution；
（2）It weighs 2.0 grams of citric acids to be dissolved in 50 ml deionized waters, is configured to surface modification agent solution；
（3）It weighs 9.5 grams of ferrous sulfate to be dissolved in 100 ml deionized waters, is configured to inhibitor solution；
（4）At room temperature, by step（2）The solution of preparation is added to（1）In, it stirs after five minutes, by step（3）Preparation
Solution be added rapidly in above-mentioned mixed solution, under the mixing speed of 550 r/min, magnetic agitation 2 hours；
（5）After the reaction was completed, product is centrifuged, first with deionized water centrifuge washing 3 times, then with ethanol washing 2 times, i.e.,
Near-spherical nano silver slice cluster is obtained, the spherical nano silver slice cluster is distributed in deionized water and is saved；
（6）The electron scanning micrograph of product prepared by the present embodiment is as shown in Figure 5, it can be seen that product is spherical receives
Rice silver strip cluster, cluster diameter 200-500 nm, by thickness 10-30 nm, the nano silver slice self assembly shape of size 70-150 nm
At.
Embodiment 5：
（1）It weighs 15 grams of silver nitrates and is dissolved in 100 milliliters and go in water ion water, be configured to silver nitrate solution；
（2）It weighs 4.0 grams of citric acids to be dissolved in 50 ml deionized waters, is configured to surface modification agent solution；
（3）It weighs 6.5 grams of ferrous sulfate to be dissolved in 100 ml deionized waters, is configured to inhibitor solution；
（4）At room temperature, by step（2）The solution of preparation is added to（1）In, it stirs after five minutes, by step（3）Preparation
Solution be added rapidly in above-mentioned mixed solution, under the mixing speed of 550 r/min, magnetic agitation 2 hours；
（5）After the reaction was completed, product is centrifuged, first with deionized water centrifuge washing 3 times, then with ethanol washing 2 times, i.e.,
Near-spherical nano silver slice cluster is obtained, the spherical nano silver slice cluster is distributed in deionized water and is saved；
（6）The electron scanning micrograph of product prepared by the present embodiment is as shown in Figure 5, it can be seen that product is spherical receives
Rice silver strip cluster, cluster diameter 200-500 nm, by thickness 10-30 nm, the nano silver slice self assembly shape of size 70-150 nm
At.
Embodiment 6：
（1）It weighs 5.0 grams of silver nitrates and is dissolved in 100 milliliters and go in water ion water, be configured to silver nitrate solution；
（2）It weighs 2.0 grams of citric acids to be dissolved in 50 ml deionized waters, is configured to surface modification agent solution；
（3）It weighs 5.0 grams of ferrous sulfate to be dissolved in 100 ml deionized waters, is configured to inhibitor solution；
（4）At room temperature, by step（2）The solution of preparation is added to（1）In, it stirs after five minutes, by step（3）Preparation
Solution be added rapidly in above-mentioned mixed solution, under the mixing speed of 550 r/min, magnetic agitation 2 hours；
（5）After the reaction was completed, product is centrifuged, first with deionized water centrifuge washing 3 times, then with ethanol washing 2 times, i.e.,
Near-spherical nano silver slice cluster is obtained, the spherical nano silver slice cluster is distributed in deionized water and is saved；
（6）The electron scanning micrograph of product prepared by the present embodiment is as shown in Figure 5, it can be seen that product is spherical receives
Rice silver strip cluster, cluster diameter 200-500 nm, by thickness 10-30 nm, the nano silver slice self assembly shape of size 70-150 nm
At.
Embodiment 7：
（1）It weighs 5.0 grams of silver nitrates and is dissolved in 100 milliliters and go in water ion water, be configured to silver nitrate solution；
（2）It weighs 1.5 grams of citric acids to be dissolved in 50 ml deionized waters, is configured to surface modification agent solution；
（3）It weighs 9.5 grams of ferrous sulfate to be dissolved in 100 ml deionized waters, is configured to inhibitor solution；
（4）At room temperature, by step（2）The solution of preparation is added to（1）In, it stirs after five minutes, by step（3）Preparation
Solution be added rapidly in above-mentioned mixed solution, under the mixing speed of 550 r/min, magnetic agitation 2 hours；
（5）After the reaction was completed, product is centrifuged, first with deionized water centrifuge washing 3 times, then with ethanol washing 2 times, i.e.,
Near-spherical nano silver slice cluster is obtained, the spherical nano silver slice cluster is distributed in deionized water and is saved；
（6）The electron scanning micrograph of product prepared by the present embodiment is as shown in Figure 5, it can be seen that product is spherical receives
Rice silver strip cluster, cluster diameter 200-500 nm, by thickness 10-30 nm, the nano silver slice self assembly shape of size 70-150 nm
At.
Above-described embodiment is merely illustrative of the technical solution of the present invention and is not intended to limit it, all without departing from the present invention
Any modification of spirit and scope or equivalent replacement should all cover the range in technical solution of the present invention.
The invention discloses a kind of preparation methods of near-spherical nano silver slice cluster, it is characterised in that：It is 0.8%- by concentration
6% silver nitrate is mixed with the citric acid that concentration is 0.3%-2.0%, after stirring 5-10 minutes, the sulphur for being 1.6%-8.0% by concentration
Sour ferrous iron is add to the above mixed solution under the mixing speed of 550 r/min, and magnetic agitation 1-2 hours, after the reaction was completed,
Product is subjected to centrifuge washing, i.e. acquisition near-spherical nano silver slice cluster.Preparation method of the invention is simple, easily operated, anti-
Should be in the aqueous solution of room temperature condition carry out, without special additive, template, the reaction time is short, cost and consume energy it is low, it can be achieved that
Industrialized production.
Claims (2)
1. a kind of preparation method of near-spherical nano silver slice cluster, which is characterized in that include the following steps：
（1）It weighs silver nitrate solid to be dissolved in water ion water, is configured to silver nitrate solution；
（2）It weighs citric acid solid to be dissolved in deionized water, is configured to surface modification agent solution；
（3）It weighs ferrous sulfate solid to be dissolved in deionized water, is configured to inhibitor solution；
（4）At room temperature, by step（2）The solution of preparation is added to（1）In, after stirring 5-10 minutes, by step（3）System
Standby solution is added rapidly in above-mentioned mixed solution, under the mixing speed of 550 r/min, magnetic agitation 1-2 hours；
（5）After the reaction was completed, product is centrifuged, first with deionized water centrifuge washing 3 times, then with ethanol washing 2 times, i.e.,
Near-spherical nano silver slice cluster is obtained, the spherical nano silver slice cluster is distributed in deionized water and is saved.
2. a kind of preparation method of spherical nano silver slice cluster according to claim 1, which is characterized in that
In the mixed solution, silver nitrate concentration 0.8%-6%；Citric acid concentration is 0.3%-2.0%；Ferrous sulfate concentration is
1.6%-8.0%。
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| CN201810867437.3A CN108817417A (en) | 2018-09-04 | 2018-09-04 | Preparation method of sphere-like nano silver sheet cluster |
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| CN110330512A (en) * | 2019-07-30 | 2019-10-15 | 山东大学 | A kind of ag nano-cluster fluorescence nano stick and preparation method thereof and the application in white light LEDs |
| CN110681874A (en) * | 2019-11-07 | 2020-01-14 | 西南大学 | Preparation method and hydrogen evolution application of silver-nickel nanocluster |
| CN114733519A (en) * | 2022-05-31 | 2022-07-12 | 电子科技大学中山学院 | Preparation method of nano-silver/graphene/nano-titanium dioxide composite material |
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| CN110681874B (en) * | 2019-11-07 | 2022-05-31 | 西南大学 | Preparation method and hydrogen evolution application of silver-nickel nanocluster |
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Application publication date: 20181116 |