CN103862061B - A kind of method of the green syt golden nanometer particle of ultraviolet catalytic - Google Patents
A kind of method of the green syt golden nanometer particle of ultraviolet catalytic Download PDFInfo
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- CN103862061B CN103862061B CN201410095324.8A CN201410095324A CN103862061B CN 103862061 B CN103862061 B CN 103862061B CN 201410095324 A CN201410095324 A CN 201410095324A CN 103862061 B CN103862061 B CN 103862061B
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Abstract
A kind of method of the green syt golden nanometer particle of ultraviolet catalytic.Belong to noble metal nano particles synthesis technical field.The problems such as the cost existed in the traditional method of golden nanometer particle is high, it is big to pollute, strong toxicity, condition are comparatively harsh are prepared in solution.Yew tree extracting solution is joined in chlorauric acid solution (1 mM) by the present invention, can obtain golden nanometer particle with 500 W ultra violet lamps.The present invention has green, quick, easy and simple to handle, the comparatively homogeneous advantage of gold nanometer particle grain size for preparing.The raw material that the present invention uses is yew tree wood flour, can purify waste from a factory obtain from Ramulus et folium taxi cuspidatae artware processing factory, paclitaxel processing, be possible not only to reduce cost, and make use of industrial waste, saved resource.
Description
Technical field
The invention belongs to noble metal nano particles synthesis technical field.
Background technology
Golden nanometer particle is as other noble metal nano particles, the common concern of people has been attracted with the photoelectron of its uniqueness and physicochemical properties, it is at numerous areas, such as biological medicine, catalytic reaction, bio-sensing, electromagnetic equipment etc., suffers from being widely applied.Although chemically and physically the method for method synthesis golden nanometer particle has more report at present, and can prepare the good golden nanometer particle of geomery, but these methods yet suffer from some limitation.Such as: utilization is chemically synthesized golden nanometer particle would generally make some cytotoxic chemical reagent be adsorbed in nanoparticle surface, thus its application medically can be hindered.And biosynthesis has low cost, pollution-free, advantage without using the physical chemistry synthetic methods such as condition or toxic reagent such as High Temperature High Pressure incomparable.Recent years, utilize plant, algae, antibacterial, fungus synthesis noble metal nano particles technology by wide coverage, and wherein utilize method that plant extraction liquid carries out synthesizing with its low biohazard, show one's talent without advantages such as complicated culture process, consumption can be scaling up simply.
Summary of the invention
The present invention seeks to solution and prepare the problems such as the cost existed in the traditional method of golden nanometer particle is high, it is big to pollute, strong toxicity, condition are comparatively harsh, it is provided that the method for the green syt golden nanometer particle of a kind of ultraviolet catalytic.
The method of the green syt golden nanometer particle of ultraviolet catalytic provided by the invention, comprises the concrete steps that:
1st, prepared by yew tree extracting solution
Take after 10-15g yew tree wood flour is rinsed, 500-750ml distilled water boils concentration repeatedly, after filtration, makes 100-150ml yew tree extracting solution；
2nd, the synthesis of golden nanometer particle
Take yew tree extracting solution prepared by 0.6-1ml the 1st step and join in 10ml chlorauric acid solution (1mM), namely obtain golden nanometer particle at the position 500W ultra violet lamp 15-20min from its 10-20cm.
Advantages of the present invention and good effect:
Invention describes a kind of method that yew tree wood flour extracting solution quickly prepares golden nanometer particle, and the reaction effect of its catalysis reduction paranitrophenol is tested.The present invention has green, quick, easy and simple to handle, the comparatively homogeneous advantage of gold nanometer particle grain size for preparing.The raw material that the present invention uses is yew tree wood flour, can purify waste from a factory obtain from Ramulus et folium taxi cuspidatae artware processing factory, paclitaxel processing, be possible not only to reduce cost, and make use of industrial waste, saved resource.
Accompanying drawing explanation
Fig. 1 is the TEM image of the golden nanometer particle obtained by this patent, and scale is 100nm.
Fig. 2 is the ultraviolet-ray visible absorbing scanning optical spectrum figure adding golden nanometer particle obtained after different volumes yew tree extracting solution fully reacts.
Fig. 3 is the ultraviolet-ray visible absorbing scanning optical spectrum figure of the golden nanometer particle adding the reaction of enough yew tree extracting solution obtained by different time.
Fig. 4 is the ultraviolet-ray visible absorbing scanning optical spectrum figure utilizing the gold nanoparticle catalyzed reduction paranitrophenol obtained by this patent.
Fig. 5 is the kinetics at the gold nanoparticle catalyzed reduction paranitrophenol utilized obtained by this patent.
Detailed description of the invention
Embodiment 1:
The method of the green syt golden nanometer particle of ultraviolet catalytic, concrete steps:
Take after 10g yew tree wood flour suitably rinses, repeatedly boil in 500ml distilled water, after filtration, make 100ml yew tree extracting solution.Taking 0.6ml to add in 10ml chlorauric acid solution (1mM), with 500W ultra violet lamp 15min, irradiation distance is 15cm.Above-mentioned raw materials can be scaling up.
Yew tree extracting solution contains alkaloid, Flavonoid substances, aldehydes matter, fatty acid, protein etc., and mainly as reducing agent and dispersant, uviol lamp can effectively accelerate response speed.In course of reaction, owing to the formation of golden nanometer particle can substantially observe that the color of solution is changed into aubergine by water white transparency, the change of this color is due to the distinctive surface plasma body resonant vibration (surfaceplasmonresonance of golden nanometer particle, SPR) character causes, therefore can according to the formation of the variation monitoring golden nanometer particle of solution colour.
As it is shown in figure 1, it will be seen that golden nanometer particle is mainly rounded from TEM image, particle diameter is comparatively homogeneous, and diameter is approximately in about 10-30nm.
Fig. 2 adds not commensurability yew tree extracting solution abundant reacted uv-vis spectra under ultra violet lamp to 10ml chlorauric acid solution (1mM).Wherein, the addition of yew tree extracting solution respectively 0.3,0.4,0.5,0.6 and 0.7ml, scanning wavelength ranges for 200-900nm.The SPR effect of the golden nanometer particle owing to generating, can produce absworption peak at about 540nm place, thus can monitor the degree that reaction carries out.
It can be seen that compare addition 0.7ml extracting solution and add 0.6ml extracting solution, the SPR peak intensity of golden nanometer particle is almost constant, thus can determine whether that adding 0.6ml can make gold chloride complete reaction.And when adding extraction liquid measure and being less, bigger and anisotropic golden nanometer particle can be formed so that it is there is certain blue shift in SPR peak.
Fig. 3 adds 1ml yew tree extracting solution to 10mL chlorauric acid solution (1mM) to react the uv-vis spectra of different time under uviol lamp, and in the response time respectively 5,7,10,15 and 20min, scanning wavelength ranges for 400-700nm.As seen from the figure, almost without growth when the SPR peak of golden nanometer particle is compared with 15min after reaction beginning 20min, thus can determine whether that reaction terminates after carrying out 15min substantially.
Next gold nanoparticle catalyzed performance is tested again by we, and what we selected is the reaction utilizing sodium borohydride reduction paranitrophenol.Reaction temperature is approximately in about 20 DEG C.We take 20 μ l from prepared golden nanometer particle aqueous solution and add reaction system.
Fig. 4 is the uv-visible absorption spectra figure in course of reaction, and scanning wavelength scope is 260-500nm, carries out measurement when 0,2,4,6,8,10,12 and 14min respectively in reaction.Substantially can find out that from figure 300nm and 400nm exists two absworption peaks, respectively corresponding product para-aminophenol and reactant paranitrophenol.There is strong absorption in reaction incipient stage 400nm place, 300nm place does not then absorb.When question response proceeds to about 14min, the absworption peak at 400nm place is almost wholly absent, and 300nm place occurs in that comparatively strong absorption, it was shown that reactant paranitrophenol is substantially completely converted into para-aminophenol.
Next the kinetics of above-mentioned reaction is tested by we, and monitoring wavelength is 400nm, and time range is 0-1800s.From figure 5 it can be seen that have gold nanoparticle catalyzed reaction rate more a lot of soon than normal reaction speed representated by red line, it was demonstrated that reduction paranitrophenol is had significant catalytic action by golden nanometer particle prepared by this patent.
Claims (1)
1. the method for the green syt golden nanometer particle of a ultraviolet catalytic, it is characterised in that comprising the concrete steps that of the method:
Prepared by the first step, yew tree extracting solution
Take after 10-15g yew tree wood flour is rinsed, 500-750ml distilled water boils concentration repeatedly, after filtration, makes 100-150ml yew tree extracting solution；
Second step, golden nanometer particle synthesis
Take yew tree extracting solution prepared by the 0.6-1ml first step and join in the chlorauric acid solution that 10ml concentration is 1mM, namely obtain golden nanometer particle at the position 500W ultra violet lamp 15-20min from its 10-20cm.
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| CN103862061B true CN103862061B (en) | 2016-07-27 |
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| WO2016043349A1 (en) * | 2014-09-18 | 2016-03-24 | RI, Kyong Min | Solution of bio gold nanoparticles produced by extracts of plants |
| CN105057693A (en) * | 2015-08-22 | 2015-11-18 | 赵兵 | Nanogold particle preparing method |
| CN114146706B (en) * | 2021-12-07 | 2022-12-20 | 嘉兴学院 | Gold/molybdenum oxide composite nano catalyst and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5552086A (en) * | 1992-01-29 | 1996-09-03 | Coulter Corporation | Immobilized metal colloids on dispersed polymer microspheres |
| CN102773496A (en) * | 2012-08-22 | 2012-11-14 | 厦门大学 | Method for preparing gold-silver alloy nano particle by continuous reaction kettle |
| CN103586463A (en) * | 2013-11-29 | 2014-02-19 | 成都理工大学 | Method of green synthesis of nanogold through kiwi fruit juice |
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| CN102202815A (en) * | 2008-05-16 | 2011-09-28 | 维鲁泰克技术股份有限公司 | Green synthesis of nanometals using plant extracts and use thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5552086A (en) * | 1992-01-29 | 1996-09-03 | Coulter Corporation | Immobilized metal colloids on dispersed polymer microspheres |
| CN102773496A (en) * | 2012-08-22 | 2012-11-14 | 厦门大学 | Method for preparing gold-silver alloy nano particle by continuous reaction kettle |
| CN103586463A (en) * | 2013-11-29 | 2014-02-19 | 成都理工大学 | Method of green synthesis of nanogold through kiwi fruit juice |
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