CN107243647A - A kind of preparation method of Nanometer Copper colloidal sol - Google Patents
A kind of preparation method of Nanometer Copper colloidal sol Download PDFInfo
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- CN107243647A CN107243647A CN201710497844.5A CN201710497844A CN107243647A CN 107243647 A CN107243647 A CN 107243647A CN 201710497844 A CN201710497844 A CN 201710497844A CN 107243647 A CN107243647 A CN 107243647A
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 54
- 239000010949 copper Substances 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 241000533293 Sesbania emerus Species 0.000 claims abstract description 22
- 229940069765 bean extract Drugs 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000008367 deionised water Substances 0.000 claims abstract description 9
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 9
- 239000007800 oxidant agent Substances 0.000 claims abstract description 7
- 230000001590 oxidative effect Effects 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 6
- MPTQRFCYZCXJFQ-UHFFFAOYSA-L copper(II) chloride dihydrate Chemical compound O.O.[Cl-].[Cl-].[Cu+2] MPTQRFCYZCXJFQ-UHFFFAOYSA-L 0.000 claims description 10
- 239000002245 particle Substances 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 15
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 abstract description 13
- 230000009467 reduction Effects 0.000 abstract description 8
- 239000002105 nanoparticle Substances 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 239000000419 plant extract Substances 0.000 abstract description 4
- 239000003223 protective agent Substances 0.000 abstract description 3
- 239000008346 aqueous phase Substances 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 12
- 239000003054 catalyst Substances 0.000 description 12
- 238000006722 reduction reaction Methods 0.000 description 11
- 239000000243 solution Substances 0.000 description 11
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 9
- 229960000907 methylthioninium chloride Drugs 0.000 description 9
- 239000007864 aqueous solution Substances 0.000 description 7
- 239000012279 sodium borohydride Substances 0.000 description 6
- 229910000033 sodium borohydride Inorganic materials 0.000 description 6
- 238000005303 weighing Methods 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910001868 water Inorganic materials 0.000 description 5
- 239000003643 water by type Substances 0.000 description 5
- 238000006555 catalytic reaction Methods 0.000 description 4
- 239000000284 extract Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- CWVRJTMFETXNAD-FWCWNIRPSA-N 3-O-Caffeoylquinic acid Natural products O[C@H]1[C@@H](O)C[C@@](O)(C(O)=O)C[C@H]1OC(=O)\C=C\C1=CC=C(O)C(O)=C1 CWVRJTMFETXNAD-FWCWNIRPSA-N 0.000 description 3
- PZIRUHCJZBGLDY-UHFFFAOYSA-N Caffeoylquinic acid Natural products CC(CCC(=O)C(C)C1C(=O)CC2C3CC(O)C4CC(O)CCC4(C)C3CCC12C)C(=O)O PZIRUHCJZBGLDY-UHFFFAOYSA-N 0.000 description 3
- CWVRJTMFETXNAD-KLZCAUPSSA-N Neochlorogenin-saeure Natural products O[C@H]1C[C@@](O)(C[C@@H](OC(=O)C=Cc2ccc(O)c(O)c2)[C@@H]1O)C(=O)O CWVRJTMFETXNAD-KLZCAUPSSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 235000001368 chlorogenic acid Nutrition 0.000 description 3
- CWVRJTMFETXNAD-JUHZACGLSA-N chlorogenic acid Chemical compound O[C@@H]1[C@H](O)C[C@@](O)(C(O)=O)C[C@H]1OC(=O)\C=C\C1=CC=C(O)C(O)=C1 CWVRJTMFETXNAD-JUHZACGLSA-N 0.000 description 3
- 229940074393 chlorogenic acid Drugs 0.000 description 3
- FFQSDFBBSXGVKF-KHSQJDLVSA-N chlorogenic acid Natural products O[C@@H]1C[C@](O)(C[C@@H](CC(=O)C=Cc2ccc(O)c(O)c2)[C@@H]1O)C(=O)O FFQSDFBBSXGVKF-KHSQJDLVSA-N 0.000 description 3
- BMRSEYFENKXDIS-KLZCAUPSSA-N cis-3-O-p-coumaroylquinic acid Natural products O[C@H]1C[C@@](O)(C[C@@H](OC(=O)C=Cc2ccc(O)cc2)[C@@H]1O)C(=O)O BMRSEYFENKXDIS-KLZCAUPSSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 241000370738 Chlorion Species 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000011943 nanocatalyst Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QAIPRVGONGVQAS-DUXPYHPUSA-N trans-caffeic acid Chemical compound OC(=O)\C=C\C1=CC=C(O)C(O)=C1 QAIPRVGONGVQAS-DUXPYHPUSA-N 0.000 description 2
- ACEAELOMUCBPJP-UHFFFAOYSA-N (E)-3,4,5-trihydroxycinnamic acid Natural products OC(=O)C=CC1=CC(O)=C(O)C(O)=C1 ACEAELOMUCBPJP-UHFFFAOYSA-N 0.000 description 1
- 241001116389 Aloe Species 0.000 description 1
- -1 Copper dichloride dihydrate Chemical class 0.000 description 1
- 229910021592 Copper(II) chloride Inorganic materials 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 235000011201 Ginkgo Nutrition 0.000 description 1
- 235000008100 Ginkgo biloba Nutrition 0.000 description 1
- 244000194101 Ginkgo biloba Species 0.000 description 1
- 241001124569 Lycaenidae Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 244000269722 Thea sinensis Species 0.000 description 1
- 241001464837 Viridiplantae Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 235000011399 aloe vera Nutrition 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 235000004883 caffeic acid Nutrition 0.000 description 1
- 229940074360 caffeic acid Drugs 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- QAIPRVGONGVQAS-UHFFFAOYSA-N cis-caffeic acid Natural products OC(=O)C=CC1=CC=C(O)C(O)=C1 QAIPRVGONGVQAS-UHFFFAOYSA-N 0.000 description 1
- 235000014987 copper Nutrition 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 description 1
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229960003280 cupric chloride Drugs 0.000 description 1
- 229960004643 cupric oxide Drugs 0.000 description 1
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical compound [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 description 1
- 229940112669 cuprous oxide Drugs 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 235000009569 green tea Nutrition 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QXDYIBHUQHUJJI-UHFFFAOYSA-N nitrobenzene phenol Chemical compound OC1=CC=CC=C1.[O-][N+](=O)C1=CC=CC=C1 QXDYIBHUQHUJJI-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000003381 stabilizer Substances 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
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/72—Copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/20—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state
- B01J35/23—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state in a colloidal state
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nanotechnology (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Chemical & Material Sciences (AREA)
- Catalysts (AREA)
Abstract
A kind of preparation method of Nanometer Copper colloidal sol, is related to the preparing technical field that plant extracts reduction prepares Nanometer Copper colloidal sol, mantoquita is dissolved in deionized water, oxidant is obtained；Green coffee bean extract is dissolved in deionized water, reducing agent is obtained；Oxidant is added dropwise in reducing agent, stirring reaction obtains Nanometer Copper colloidal sol to terminating.The present invention reduces copper chloride in aqueous phase, and the nanometer copper particle obtained by above step is stably dispersed in colloidal solution, and particle diameter is 5nm or so, in addition, nanoparticle surface is coated by protective agent so that nano-particle is highly stable, can be stablized 1 month under normal temperature.Therefore, green reducing process reduced nano copper is a kind of efficient, feasible method, is with a wide range of applications.Easy reaction of the present invention, it is economic and environment-friendly, reproducible.
Description
Technical field
The present invention relates to the preparing technical field that plant extracts reduction prepares Nanometer Copper colloidal sol.
Background technology
There is dramatically different structure and property between nano metal particles and conventional metals particle.It is used as new class
Catalyst, has unique reactivity worth and activity compared with traditional catalyst.Nanocatalyst is except meeting traditional catalyst
Catalysis characteristics, also with other features such as potent catalysis so that nanocatalyst turns into the hot topic in catalyst of new generation
One.Nanometer Copper is a kind of good catalyst, and it can be catalyzed a variety of chemical reactions.For example, using NaBH4Reduce 4- nitrobenzene
Phenol, under conditions of Nanometer Copper is present, reactivity enhancing illustrates that Nanometer Copper has fabulous catalytic capability.
Nanometer Copper has the physics and chemical property of uniqueness, is mainly used in catalyst material, anti-biotic material, bio-sensing
Equipment material, low temperature superconducting material etc..In general, the performance of Nanometer Copper depends on its particle diameter, pattern and its stability.Grain
Footpath is smaller, and its specific surface area is bigger, and the property that Nanometer Copper has is better, and particle diameter exceedes certain size, and particle will lose
Its distinctive nanoparticle performance.Therefore, control its process conditions in preparation process and received with obtaining controllable particle diameter, size
Rice copper particle is most important.
It is a kind of emerging preparation gimmick that biological reducing method, which prepares Nanometer Copper, and experimental implementation is simple, cost is low, to environment friend
It is good, as study hotspot in recent years.It has been found that effective reduction prepare nanometer copper particle plant it is a lot, such as ginkgo leaf,
Chinese aloe leaf, green tea etc., the particle diameter of its copper nano-particle prepared is within 100nm.
The content of the invention
It is contemplated that a kind of method for preparing smaller Nanometer Copper with green reducing process of invention, so that obtained
Nanometer Copper has more preferable catalytic performance.
The present invention comprises the following steps：
1）Mantoquita is dissolved in deionized water, oxidant is obtained；
2）Green coffee bean extract is dissolved in deionized water, reducing agent is obtained；
3）Under the conditions of 80 DEG C, oxidant is added dropwise in reducing agent, stirring reaction obtains Nanometer Copper colloidal sol to terminating.
Plant extracts reduced nano copper has the efficient, low toxicity that other chemical reduction methods have, reaction condition temperature
And the characteristics of, plant extracts acts not only as reducing agent, acts also as protective agent, stabilizer.
Nanometer Copper has high susceptibility to oxygen, in open space, and Nanometer Copper is easily oxidized to its oxide, such as nanometer
Cupric oxide, nano cuprous oxide, therefore, maintain the stable condition of Nanometer Copper preparation process most important.
The present invention uses green plants extract for reducing agent, and using mantoquita as oxidant, copper chloride is reduced in aqueous phase, leads to
Cross the nanometer copper particle that above step obtained to be stably dispersed in colloidal solution, particle diameter is 5nm or so, in addition, nano-particle
Surface is coated by protective agent so that nano-particle is highly stable, can be stablized 1 month under normal temperature.Therefore, green reducing process reduction is received
Rice copper is a kind of efficient, feasible method, is with a wide range of applications.Easy reaction of the present invention, economic and environment-friendly, repetition
Property is good.
Further, mantoquita of the present invention is Copper dichloride dihydrate.Copper dichloride dihydrate（CuCl2•H2O）It is copper chloride
Dihydrate, after copper ion combination chlorion, also remain two pairs of lone pair electrons, combined with water, herein chlorion coordination ability compared with
By force, during reduction reaction, mantoquita is first coordinated with reducing agent, is further exchanged electronics, is reacted.Therefore, two
Hydrated copper chloride is more beneficial for the progress of green reduction reaction as copper source.
The mass ratio that feeds intake of copper chloride and green coffee bean extract in reducing agent is 1: 5 in the Copper dichloride dihydrate.It is green
Coffee bean extract complicated component, including chlorogenic acid, caffeic acid, polysaccharide etc., its Content of Chlorogenic Acid is the master of green coffee bean extract
Active component is wanted, its content is about 10%, with reference to pertinent literature, extract other compositions do not have reducing power or reduction to mantoquita
Ability is very weak.Therefore relative response amount of this patent case study on implementation according to Copper dichloride dihydrate and its active component chlorogenic acid,
Maintain mantoquita with respect to volume on the basis of this, design feasible rate of charge, its reaction can be made complete.
Brief description of the drawings
Fig. 1 is the low power transmission electron microscope picture of product made from the embodiment of the present invention 1.
Fig. 2 is the low power transmission electron microscope picture of product made from the embodiment of the present invention 2.
Fig. 3 is the low power transmission electron microscope picture of product made from the embodiment of the present invention 3.
Fig. 4 is the high power transmission electron microscope picture of product made from the embodiment of the present invention 1.
Fig. 5 is that methylene blue reduction reaction increases obtain over time after addition nanometer copper catalyst of the embodiment of the present invention
UV-vis collection of illustrative plates.
Fig. 6 is the dynamic curve diagram of catalysis methylene blue after addition nanometer copper catalyst of the embodiment of the present invention.
Embodiment
First, preparation technology：
Case study on implementation 1：
The Copper dichloride dihydrate for weighing 0.1705g is put in beaker, is completely dissolved with 20ml deionized water.The solution prepared is dilute
10 times are released, the copper chloride solution that concentration is 5mM is obtained, sealing preserve is standby.
The green coffee bean extract for weighing 0.5017g is dissolved in 50ml deionized waters as reducing agent.It is sufficiently stirred for protecting
QED fully dissolved, obtains the green coffee bean extract aqueous solution that concentration is 0.01g/mL.
10ml copper chloride solutions are taken to be added drop-wise in the green coffee bean extract aqueous solution of 50ml, reaction is carried out at 80 DEG C,
Drop speed is maintained at 1 drop/sec.Continue to stir 20 minutes after dripping off to ensure that copper chloride reaction is complete, obtain Nanometer Copper colloidal sol Cu1.
Obtained Nanometer Copper colloidal sol Cu1 is scanned under low, high power transmission electron microscope, Fig. 1 is exactly low power transmission electron microscope picture knot
Really, Fig. 4 is high power transmission electron microscope picture.
As seen from Figure 1, nanometer copper particle is smaller, and uniform particle is scattered in medium, and the phenomenon of aggregation or cohesion is not produced.
The lattice of Nanometer Copper can be substantially seen from Fig. 4, and spacing of lattice is about in 0.208nm or so, corresponding to 111 crystalline substances of silver
Face, illustrate synthesis is nanometer copper particle.
Case study on implementation 2：
The Copper dichloride dihydrate for weighing 0.1705g is put in beaker, is completely dissolved with 20ml deionized water.The solution prepared is dilute
10 times are released, the copper chloride solution that concentration is 5mM is obtained, sealing preserve is standby.
The green coffee bean extract for weighing 1.0018g is dissolved in 50ml deionized waters as reducing agent, is sufficiently stirred for protecting
QED fully dissolved, obtains the green coffee bean extract aqueous solution that concentration is 0.02g/mL.
10ml copper chloride solutions are taken to be added drop-wise in the green coffee bean extract aqueous solution of 50ml, reaction is carried out at 80 DEG C,
Drop speed is maintained at 1 drop/sec.Continue to stir 20 minutes after dripping off to ensure that copper chloride reaction is complete, obtain Nanometer Copper colloidal sol Cu2.
Obtained Nanometer Copper colloidal sol Cu2 is scanned under low power transmission electron microscope, from Figure 2 it can be seen that the copper nano-particle of generation
Particle is uniform, similar spherical in ellipse and well dispersed.
Case study on implementation 3：
The Copper dichloride dihydrate for weighing 0.1705g is put in beaker, is completely dissolved with 20ml deionized water.The solution prepared is dilute
10 times are released, the copper chloride solution that concentration is 5mM is obtained, sealing preserve is standby.
The green coffee bean extract for weighing 5.0008g is dissolved in 50ml deionized waters as reducing agent.It is sufficiently stirred for protecting
QED fully dissolved, obtains the green coffee bean extract aqueous solution that concentration is 0.10g/mL.
10ml copper chloride solutions are taken to be added drop-wise in the green coffee bean extract aqueous solution of 50ml, reaction is carried out at 80 DEG C,
Drop speed is maintained at 1 drop/sec.Continue to stir 20 minutes after dripping off to ensure that copper nitrate reaction is complete, obtain Nanometer Copper colloidal sol Cu3.
Obtained Nanometer Copper glue Cu3 is scanned under low power transmission electron microscope, Fig. 3 is exactly transmission electron microscope picture result, can by Fig. 3
See, the copper particle of generation becomes big, and particle diameter distribution is uneven, and quantity is reduced, spherical in shape, and dispersiveness is deteriorated.
In addition, the extracting method of the green coffee bean extract in source of reducing agent is existing known technology, green coffee in this technique
Coffee beans extract is purchased from Xi'an Yuan Sen bio tech ltd, meets incorporated business's standard, with the kind of green coffee bean extract
It is sub to sink, concentrate through clean, crushing, extraction, filtering, concentration, water for raw material, being spray-dried, the series of process stream such as crushing packing
Cheng Jun meets standard.
2nd, using and result：
For the catalytic effect of the nanometer copper sample of verifying synthesis, characterized, tied by the reaction of sodium borohydride reduction methylene blue
As shown in Figure 5,6, after Fig. 5 is addition nanometer copper catalyst, methylene blue catalytic reduction reaction increases what is obtained to fruit with the time
UV-Vis collection of illustrative plates, Fig. 6 is methylene blue decomposition curve figure after addition nanometer copper catalyst.
Weigh 0.07566g NaBH4It is put in beaker, is dissolved in 20ml deionized waters, waits to be completely dissolved, use Aluminium Foil Package
Wrap up in, lucifuge is standby.
Weigh 0.0224g methylene blues to be put in beaker, be dissolved in 20ml deionized waters, it is to be dissolved complete, take 1ml dilute
100 times are released, sealing preserve is standby.
By 0.6ml NaBH4The aqueous solution is added in the methylene blue solution that 2.5ml is prepared, and adds 10ul Nanometer Copper
Reacted under colloidal sol, normal temperature, reference is made with water, survey UV.
As Figure 1-3, the low power transmission electron microscope picture of the sample synthesized under three kinds of concentration can be seen that, as reactant is dense
The rise of degree, the copper particle of generation becomes big, but dispersiveness is deteriorated.
Fig. 4 is spacing of lattice figures of the Cu1 under high power transmission electron microscope.As can be seen from the figure lattice, and spacing of lattice
Size is in 0.208nm or so, corresponding to copper（111）Crystal face.
Fig. 5 increases obtained UV-Vis with the time for methylene blue catalytic reduction reaction after addition nanometer copper catalyst to scheme
, as seen from the figure, there is absworption peak in spectrum, at 664nm and 612nm after 10 μ L Nanometer Coppers are added, the suction at 664nm and 612nm
Receive peak to begin to decline, absorption peak strength increases and declined over time, and is not added with the conditions of Nanometer Copper, absworption peak is at any time at two
Between increase and do not reduce, this shows, reaction of the nanometer copper catalyst to sodium borohydride reduction methylene blue serves good urge
Change is acted on.
Fig. 6 is the kinetic curve of catalysis methylene blue, ln (At/A0) value and reaction time is in good linear relationship, enter
One step illustrates that Nanometer Copper serves good catalytic action.
Reactant wide material sources used in the invention, reaction is quick, and reaction condition is gentle, the Nanometer Copper stability of synthesis
Good, particle diameter is smaller, has good catalytic action to the reduction of sodium borohydride.
In addition, the extracting method of the green coffee bean extract in source of reducing agent is existing known, green coffee bean in this technique
Extract be purchased from Xi'an Yuan Sen bio tech ltd, meet incorporated business's standard, using the seed of green coffee bean extract as
Raw material sinks through clean, crushing, extraction, filtering, concentration, water, concentrates, is spray-dried, and the series of process flow such as crushing packing is equal
Meet standard.
Claims (3)
1. a kind of preparation method of Nanometer Copper colloidal sol, it is characterised in that comprise the following steps：
1）Mantoquita is dissolved in deionized water, oxidant is obtained；
2）Green coffee bean extract is dissolved in deionized water, reducing agent is obtained；
3）Under the conditions of 80 DEG C, oxidant is added dropwise in reducing agent, stirring reaction obtains Nanometer Copper colloidal sol to terminating.
2. preparation method according to claim 1, it is characterised in that the mantoquita is Copper dichloride dihydrate.
3. preparation method according to claim 2, it is characterised in that copper chloride and reducing agent in the Copper dichloride dihydrate
In green coffee bean extract the mass ratio that feeds intake for 1: 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710497844.5A CN107243647A (en) | 2017-06-27 | 2017-06-27 | A kind of preparation method of Nanometer Copper colloidal sol |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710497844.5A CN107243647A (en) | 2017-06-27 | 2017-06-27 | A kind of preparation method of Nanometer Copper colloidal sol |
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| Publication Number | Publication Date |
|---|---|
| CN107243647A true CN107243647A (en) | 2017-10-13 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026568A (en) * | 2019-04-25 | 2019-07-19 | 山东省医学科学院药物研究所（山东省抗衰老研究中心、山东省新技术制药研究所） | A kind of method that polyhydroxy natural products mediates synthesis to carry medicinal dendritic nanogold particle |
| CN110961657A (en) * | 2019-12-27 | 2020-04-07 | 海南医学院 | Gold nanoparticles and preparation method thereof |
| US20220048787A1 (en) * | 2019-09-05 | 2022-02-17 | Imam Abdulrahman Bin Faisal University | Method for making coffee husk reducing agent |
| US11980878B1 (en) | 2023-11-08 | 2024-05-14 | King Faisal University | Metal/polymer nanocomposite photocatalyst |
-
2017
- 2017-06-27 CN CN201710497844.5A patent/CN107243647A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026568A (en) * | 2019-04-25 | 2019-07-19 | 山东省医学科学院药物研究所（山东省抗衰老研究中心、山东省新技术制药研究所） | A kind of method that polyhydroxy natural products mediates synthesis to carry medicinal dendritic nanogold particle |
| CN110026568B (en) * | 2019-04-25 | 2021-12-24 | 山东省医学科学院药物研究所（山东省抗衰老研究中心、山东省新技术制药研究所） | Method for synthesizing medicinal dendritic nano gold particles by mediation of polyhydroxy natural products |
| US20220048787A1 (en) * | 2019-09-05 | 2022-02-17 | Imam Abdulrahman Bin Faisal University | Method for making coffee husk reducing agent |
| US11661349B2 (en) * | 2019-09-05 | 2023-05-30 | Imam Abdulrahman Bin Faisal University | Method for making coffee husk reducing agent |
| CN110961657A (en) * | 2019-12-27 | 2020-04-07 | 海南医学院 | Gold nanoparticles and preparation method thereof |
| US11980878B1 (en) | 2023-11-08 | 2024-05-14 | King Faisal University | Metal/polymer nanocomposite photocatalyst |
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