CN104483302A - Surface-enhanced Raman scattering sensor for detecting zinc ions and preparation method and application thereof - Google Patents
Surface-enhanced Raman scattering sensor for detecting zinc ions and preparation method and application thereof Download PDFInfo
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- CN104483302A CN104483302A CN201410659143.3A CN201410659143A CN104483302A CN 104483302 A CN104483302 A CN 104483302A CN 201410659143 A CN201410659143 A CN 201410659143A CN 104483302 A CN104483302 A CN 104483302A
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- zinc
- aqueous solution
- enhanced raman
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- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000004416 surface enhanced Raman spectroscopy Methods 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000007864 aqueous solution Substances 0.000 claims abstract description 36
- FHTDDANQIMVWKZ-UHFFFAOYSA-N 1h-pyridine-4-thione Chemical compound SC1=CC=NC=C1 FHTDDANQIMVWKZ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000011701 zinc Substances 0.000 claims abstract description 25
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 22
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052709 silver Inorganic materials 0.000 claims abstract description 9
- 239000004332 silver Substances 0.000 claims abstract description 9
- 238000000479 surface-enhanced Raman spectrum Methods 0.000 claims abstract description 8
- 230000008859 change Effects 0.000 claims abstract description 5
- 239000002105 nanoparticle Substances 0.000 claims abstract description 5
- 229910021419 crystalline silicon Inorganic materials 0.000 claims description 36
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 20
- 150000001455 metallic ions Chemical class 0.000 claims description 15
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 14
- 238000001237 Raman spectrum Methods 0.000 claims description 14
- 238000002791 soaking Methods 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 11
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000007654 immersion Methods 0.000 claims description 6
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000012153 distilled water Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000001069 Raman spectroscopy Methods 0.000 abstract description 19
- 229910021645 metal ion Inorganic materials 0.000 abstract description 4
- WLZRMCYVCSSEQC-UHFFFAOYSA-N cadmium(2+) Chemical compound [Cd+2] WLZRMCYVCSSEQC-UHFFFAOYSA-N 0.000 abstract description 2
- RVPVRDXYQKGNMQ-UHFFFAOYSA-N lead(2+) Chemical compound [Pb+2] RVPVRDXYQKGNMQ-UHFFFAOYSA-N 0.000 abstract description 2
- 229910021421 monocrystalline silicon Inorganic materials 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 238000004611 spectroscopical analysis Methods 0.000 description 43
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000008367 deionised water Substances 0.000 description 6
- 229910021641 deionized water Inorganic materials 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000003556 assay Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 235000005074 zinc chloride Nutrition 0.000 description 4
- 239000011592 zinc chloride Substances 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 3
- WHMDPDGBKYUEMW-UHFFFAOYSA-N pyridine-2-thiol Chemical compound SC1=CC=CC=N1 WHMDPDGBKYUEMW-UHFFFAOYSA-N 0.000 description 3
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical group C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910021591 Copper(I) chloride Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000003321 atomic absorption spectrophotometry Methods 0.000 description 1
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000004949 mass spectrometry Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- BQPIGGFYSBELGY-UHFFFAOYSA-N mercury(2+) Chemical compound [Hg+2] BQPIGGFYSBELGY-UHFFFAOYSA-N 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
Landscapes
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention relates to a surface enhanced Raman powder for qualitatively detecting zinc ionsA radio-enhanced Raman scattering (SERS) sensor, a preparation method and an application thereof. The SERS sensor is composed of a silver nanoparticle film which is attached to a single crystal Si sheet and is connected with p-mercaptopyridine molecules on the surface. The SERS sensor can qualitatively detect zinc ions in an aqueous solution; the SERS sensor is used for detecting the aqueous solution containing zinc ions, and the qualitative detection of the zinc ions in the aqueous solution is realized by comparing the change of SERS spectra before and after detection. The qualitative detection of the SERS sensor on zinc ions can effectively exclude other metal ions including Cu2+、Mn2+、Ca2+、Pb2+、Ni2+、Fe2+And Cd2+Etc. The preparation method of the SERS sensor is simple and easy to implement, can specifically identify zinc ions, and has potential application prospect in the field of metal ion detection.
Description
Technical field
The present invention relates to metal ion detection field, particularly relate to Surface enhanced raman spectroscopy (SERS) sensor and its preparation method and application for qualitative detection zinc ion.
Background technology
Effective detection of metallic ion has important application in living things system and physical environment.Such as, it has been recognized that the function aspects that zinc ion is controlling cell serves vital role, and the numerous disease of some poisonous metallic ions as cadmium ion, lead ion and mercury ion and human body there is relation, directly can have influence on the health of human body.The current method being used to detect metallic ion mainly contains atomic absorption spectrophotometry, mass spectroscopy, fluorescent spectrometry and electrochemical method.Although these methods are sensitive and accurate, but lack long-time stability and selectivity, and can not be still these detection method Problems existing with the good compatibility of water environment, and these methods generally all require complicated preprocessing process and expensive instrument and equipment.People are seeking a kind of economy, method that is efficient, detection metallic ion fast.SERS is applied in chemistry and living things system by more and more as a kind of detection technique that is highly sensitive and feature identification.
Compared with the signal intensity of normal Raman spectroscopy, the signal intensity based on the Surface enhanced raman spectroscopy at the bottom of precious metal-based wants high several to tens orders of magnitude.From this phenomenon of discovery, SERS just causes the broad interest of researcher.The spectral technique of Surface enhanced raman spectroscopy have high sensitivity, high resolving power, Selective recognition, can quench fluorescence, good stability and be applicable to the features such as research surface, interface, be widely used in surface, Interface Study, it, in fields such as Surface Science, spectroscopy, biochemistry detection, has very high potential using value.At present, although determine not yet completely about the enhancing mechanism of SERS, but the enhancing of local electromagnetic field causes the enhancing of Molecular Raman signal to be accepted extensively by people.Application based on SERS effect is widely studied.SERS sensor is used for detecting metallic ion can the change information of rapid reaction molecule sensor Raman spectrum.SERS sensor to the object that can obtain economical and efficient in the detection of metallic ion, and has long stability, can be good at being applied in the environment of aqueous solution.
Summary of the invention
An object of the present invention is to provide Surface enhanced raman spectroscopy (SERS) sensor that can detect aqueous zinc.
Two of object of the present invention is to provide a kind of preparation method that can detect Surface enhanced raman spectroscopy (SERS) sensor of aqueous zinc.
Three of object of the present invention is to provide the application of Surface enhanced raman spectroscopy (SERS) sensor that can detect aqueous zinc.
Surface enhanced raman spectroscopy (SERS) sensor that can detect aqueous zinc of the present invention is that the silver nano-grain film being connected with 4-Mercaptopyridine molecule by the surface be attached on single crystalline Si sheet is formed.
Described single crystalline Si sheet is the single crystalline Si sheet of N-type (100).
Described surface is connected with the silver nano-grain film of 4-Mercaptopyridine molecule, and the sulfydryl in its 4-Mercaptopyridine molecule and silver nano-grain are connected by chemical bond.
The preparation method that can detect Surface enhanced raman spectroscopy (SERS) sensor of aqueous zinc of the present invention comprises the steps:
(1) by the oxide layer on hydrofluorite removing single crystalline Si sheet (N-type (100)) surface: the single crystalline Si sheet cleaned up (N-type (100)) being soaked in mass concentration is (the general time of soaking is 10 minutes) in the hydrofluoric acid aqueous solution of 5%, to remove the oxide layer on single crystalline Si sheet surface;
(2) one deck Ag nano-particular film is prepared on the surface of single crystalline Si sheet: the mixed aqueous solution single crystalline Si sheet that the step of soaking with hydrofluoric acid aqueous solution (1) obtains being placed in silver nitrate and hydrofluorite carries out soaking (time of generally soaking is 3 minutes) and takes out afterwards, can form the very thin Ag nano-particular film of one deck on the surface of single crystalline Si sheet;
(3) on Ag nano particle, 4-Mercaptopyridine molecule is modified: had on the surface that step (2) obtains the single crystalline Si sheet of Ag nano-particular film in the ethanolic solution of 4-Mercaptopyridine molecule, carry out immersion reaction and take out after 2 hours, sulfydryl in 4-Mercaptopyridine molecule is connected by chemical bond with Ag nano particle, realize the modification of 4-Mercaptopyridine molecule at Ag nano grain surface, thus obtain described Surface enhanced raman spectroscopy (SERS) sensor that can detect aqueous zinc.
The described single crystalline Si sheet cleaned up, its cleaning single crystalline Si sheet uses acetone, ethanol, distilled water to carry out ultrasonic cleaning to single crystalline Si sheet successively, and the time of each ultrasonic cleaning is 10 minutes.
The concentration of the silver nitrate in described silver nitrate and the mixed aqueous solution of hydrofluorite is 5mmol/L, and the concentration of hydrofluorite is 4.8mol/L.
The concentration of the 4-Mercaptopyridine molecule in the ethanolic solution of described 4-Mercaptopyridine molecule is 0.1 ~ 1mmol/L.
Surface enhanced raman spectroscopy (SERS) sensor that can detect aqueous zinc of the present invention, can zinc ion in qualitative detection aqueous solution; Detect the aqueous solution containing zinc ion with described SERS sensor, the change of SERS spectrum before and after being detected by contrast, thus realize the qualitative detection to aqueous zinc.This SERS sensor can effectively get rid of other metallic ion to the qualitative detection of zinc ion, comprises Cu
2+, Mn
2+, Ca
2+, Pb
2+, Ni
2+, Fe
2+and Cd
2+deng interference.The concentration that can detect aqueous zinc is 1 ~ 10mmol/L.
Surface enhanced raman spectroscopy (SERS) sensor that can detect aqueous zinc of the present invention, the testing process when detecting the zinc ion in aqueous solution is as follows:
SERS sensor is placed in aqueous solution containing zinc ion to soak 2 hours, takes out rear deionized water rinsing, nitrogen dries up, in Raman detector, carry out detection Raman signal.
The present invention uses a kind of simple organic molecule 4-Mercaptopyridine as Raman signal molecule, the sulfydryl in mercaptopyridine molecule is utilized to be connected with Ag substrate on the one hand, the zinc ion in the nitrogen-atoms on the pyridine ring in mercaptopyridine molecule and detected solution is utilized to interact on the other hand, the Raman scattering peak of 4-Mercaptopyridine is changed, realizes the qualitative detection to aqueous zinc.Meanwhile, due to the nitrogen-atoms on the pyridine ring in mercaptopyridine molecule and the zinc ion in detected solution, that interactional situation occurs is different with other metallic ion, and the change that the Raman scattering peak of 4-Mercaptopyridine occurs is not identical yet.After zinc ion action, Raman spectrum is at 1594cm
-1there is a new peak in position, what be obviously different from other metallic ion goes out peak, determines the existence of aqueous zinc.Therefore, this SERS sensor can get rid of other metallic ion (Cu to the detection of zinc ion
2+, Mn
2+, Ca
2+, Pb
2+, Ni
2+, Fe
2+and Cd
2+) interference.The preparation method of this SERS sensor is simple, can specific recognition to zinc ion, has potential application prospect in metal ion detection field.
Accompanying drawing explanation
Fig. 1 is the SEM picture of the silver nano-grain film that single crystalline Si sheet adheres to.
Fig. 2 is the Raman spectrum (a) of the SERS sensor self of the embodiment of the present invention 1, and it is to the Cu of 10mmol/L
2+(b), Mn
2+(c), Ca
2+(d), Zn
2+(e), Pb
2+(f), Ni
2+(g), Fe
2+(h) and Cd
2+the Raman spectrum of (i) aqueous assay.
Fig. 3 is the Raman spectrum (a) of the SERS sensor self of the embodiment of the present invention 2, and it is to the Raman spectrum (b) of the zinc ion aqueous assay of 5mmol/L.
Fig. 4 is the Raman spectrum (a) of the SERS sensor self of the embodiment of the present invention 3, and it is to the Raman spectrum (b) of the zinc ion aqueous assay of 1mmol/L.
Fig. 5 is the Raman spectrum (a) of the SERS sensor self of the embodiment of the present invention 4, and it is to the Raman spectrum (b) of the zinc ion aqueous assay of 10mmol/L.
Fig. 6 is the Raman spectrum (a) of the SERS sensor self of the embodiment of the present invention 5, and it is to the Raman spectrum (b) of the zinc ion aqueous assay of 10mmol/L.
Embodiment
Embodiment 1
(1) use acetone, ethanol, distilled water to carry out ultrasonic cleaning to single crystalline Si sheet (N-type (100)) successively single crystalline Si sheet (N-type (100)), the time of each ultrasonic cleaning is 10 minutes;
(2) the single crystalline Si sheet that step (1) cleans up being soaked in mass concentration is carry out immersion in the hydrofluoric acid aqueous solution of 5% 10 minutes, to remove the oxide layer on single crystalline Si sheet surface;
(3) mixed aqueous solution single crystalline Si sheet that the step of soaking with hydrofluoric acid aqueous solution (2) obtains being placed in silver nitrate and hydrofluorite carries out immersion and takes out after 3 minutes, forms the very thin Ag nano-particular film of one deck (its pattern is as shown in the scanning electron microscope diagram sheet of Fig. 1) on the surface of single crystalline Si sheet; Wherein, the concentration of the silver nitrate in the mixed aqueous solution of silver nitrate and hydrofluorite is 5mmol/L, and the concentration of hydrofluorite is 4.8mol/L;
(4) the single crystalline Si sheet of Ag nano-particular film is had on the surface that step (3) obtains to be carry out immersion reaction in the ethanolic solution of the 4-Mercaptopyridine molecule of 1mmol/L to take out after 2 hours in concentration, sulfydryl in 4-Mercaptopyridine molecule is connected by chemical bond with Ag nano particle, the surface attachment of single crystalline Si sheet there is be connected with the silver nano-grain film of 4-Mercaptopyridine molecule, realize the modification of 4-Mercaptopyridine molecule at Ag nano grain surface, thus obtain the described SERS sensor that can detect aqueous zinc.
By prepared SERS sensor respectively at containing CuCl
2, MnCl
2, CaCl
2, ZnCl
2, PbCl
2, NiCl
2, FeCl
2and CdCl
2aqueous solution in soak 2 hours, wherein, the concentration of the metallic ion in above-mentioned aqueous solution is 10mmol/L.SERS sensor, after soaking in containing the aqueous solution of metallic ion, takes out, with deionized water rinsing, then after drying up with nitrogen, in Raman spectrometer, detects Raman signal, and the SERS spectrum obtained as shown in Figure 2.
SERS sensor is containing ZnCl
2aqueous solution in Raman spectrum at 1594cm
-1there is a new peak in position, what be obviously different from other metallic ion goes out peak, determines the existence of aqueous zinc.
Embodiment 2
The preparation method of SERS sensor is identical with embodiment 1, and the concentration of the 4-Mercaptopyridine molecule in the ethanolic solution of wherein 4-Mercaptopyridine molecule is also 1mmol/L.The SERS sensor of preparation is soak 2 hours in the aqueous solution of the zinc chloride of 5mmol/L in concentration.SERS sensor, after soaking in containing the aqueous solution of zinc ion, takes out, with deionized water rinsing, then after drying up with nitrogen, in Raman spectrometer, detects Raman signal, and the SERS spectrum obtained as shown in Figure 3.
Embodiment 3
The preparation method of SERS sensor is identical with embodiment 1, and the concentration of the 4-Mercaptopyridine molecule in the ethanolic solution of wherein 4-Mercaptopyridine molecule is also 1mmol/L.The SERS sensor of preparation is soak 2 hours in the aqueous solution of the zinc chloride of 1mmol/L in concentration.SERS sensor, after soaking in containing the aqueous solution of zinc ion, takes out, with deionized water rinsing, then after drying up with nitrogen, in Raman spectrometer, detects Raman signal, and the SERS spectrum obtained as shown in Figure 4.
Embodiment 4
The preparation method of SERS sensor is identical with embodiment 1, and the concentration being the 4-Mercaptopyridine molecule in the ethanolic solution of 4-Mercaptopyridine molecule is also 0.5mmol/L.The SERS sensor of preparation is soak 2 hours in the aqueous solution of the zinc chloride of 10mmol/L in concentration.SERS sensor, after soaking in containing the aqueous solution of zinc ion, takes out, with deionized water rinsing, then after drying up with nitrogen, in Raman spectrometer, detects Raman signal, and the SERS spectrum obtained as shown in Figure 5.
Embodiment 5
The preparation method of SERS sensor is identical with embodiment 1, and the concentration being the 4-Mercaptopyridine molecule in the ethanolic solution of 4-Mercaptopyridine molecule is also 0.1mmol/L.The SERS sensor of preparation is soak 2 hours in the aqueous solution of the zinc chloride of 10mmol/L in concentration.SERS sensor, after soaking in containing the aqueous solution of zinc ion, takes out, with deionized water rinsing, then after drying up with nitrogen, in Raman spectrometer, detects Raman signal, and the SERS spectrum obtained as shown in Figure 6.
Claims (10)
1. for detecting a Surface enhanced raman spectroscopy sensor for aqueous zinc, it is characterized in that: described Surface enhanced raman spectroscopy sensor is that the silver nano-grain film being connected with 4-Mercaptopyridine molecule by the surface be attached on single crystalline Si sheet is formed.
2. the Surface enhanced raman spectroscopy sensor for detecting aqueous zinc according to claim 1, is characterized in that: described single crystalline Si sheet is the single crystalline Si sheet of N-type (100).
3. the Surface enhanced raman spectroscopy sensor for detecting aqueous zinc according to claim 1, it is characterized in that: described surface is connected with the silver nano-grain film of 4-Mercaptopyridine molecule, the sulfydryl in its 4-Mercaptopyridine molecule and silver nano-grain are connected by chemical bond.
4. a preparation method for the Surface enhanced raman spectroscopy sensor for detecting aqueous zinc according to claims 1 to 3 any one, is characterized in that: described preparation method comprises the steps:
(1) by the oxide layer on hydrofluorite removing single crystalline Si sheet surface: it is in the hydrofluoric acid aqueous solution of 5% that the single crystalline Si sheet cleaned up is soaked in mass concentration, to remove the oxide layer on single crystalline Si sheet surface;
(2) one deck Ag nano-particular film is prepared on the surface of single crystalline Si sheet: the mixed aqueous solution single crystalline Si sheet that the step of soaking with hydrofluoric acid aqueous solution (1) obtains being placed in silver nitrate and hydrofluorite carries out soaking rear taking-up, obtains one deck Ag nano-particular film on the surface of single crystalline Si sheet;
(3) on Ag nano particle, 4-Mercaptopyridine molecule is modified: being had on the surface that step (2) obtains the single crystalline Si sheet of Ag nano-particular film in the ethanolic solution of 4-Mercaptopyridine molecule, carry out immersion reaction and take out after 2 hours, obtaining the described Surface enhanced raman spectroscopy sensor for detecting aqueous zinc.
5. preparation method according to claim 4, is characterized in that: the described single crystalline Si sheet cleaned up, and its cleaning single crystalline Si sheet uses acetone, ethanol, distilled water to carry out ultrasonic cleaning to single crystalline Si sheet successively, and the time of each ultrasonic cleaning is 10 minutes.
6. preparation method according to claim 4, is characterized in that: the time of the immersion described in step (1) is 10 minutes;
The time that the mixed aqueous solution that the single crystalline Si sheet that the step of soaking with hydrofluoric acid aqueous solution (1) obtains is placed in silver nitrate and hydrofluorite described in step (2) carries out soaking is 3 minutes.
7. the preparation method according to claim 4 or 6, is characterized in that: the concentration of the silver nitrate in described silver nitrate and the mixed aqueous solution of hydrofluorite is 5mmol/L, and the concentration of hydrofluorite is 4.8mol/L.
8. preparation method according to claim 4, is characterized in that: the concentration of the 4-Mercaptopyridine molecule in the ethanolic solution of described 4-Mercaptopyridine molecule is 0.1 ~ 1mmol/L.
9. the application of the Surface enhanced raman spectroscopy sensor for detecting aqueous zinc according to claims 1 to 3 any one, it is characterized in that: described Surface enhanced raman spectroscopy sensor contains the zinc ion in the aqueous solution of zinc ion for qualitative detection, before and after being detected by contrast, the change of SERS spectrum, realizes the qualitative detection to aqueous zinc;
Raman spectrum is at 1594cm
-1when a new peak appears in position, determine the existence of aqueous zinc, what be obviously different from other metallic ion goes out peak; Other described metallic ion, comprises Cu
2+, Mn
2+, Ca
2+, Pb
2+, Ni
2+, Fe
2+and Cd
2+.
10. application according to claim 9, is characterized in that: described Surface enhanced raman spectroscopy sensor contains the zinc ion in the aqueous solution of zinc ion for qualitative detection, and its concentration detecting aqueous zinc is 1 ~ 10mmol/L.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111707654A (en) * | 2020-05-15 | 2020-09-25 | 上海应用技术大学 | Colorimetric and surface-enhanced Raman dual-sensing analysis method and reagent for copper ions |
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2014
- 2014-11-18 CN CN201410659143.3A patent/CN104483302B/en not_active Expired - Fee Related
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| CN111707654A (en) * | 2020-05-15 | 2020-09-25 | 上海应用技术大学 | Colorimetric and surface-enhanced Raman dual-sensing analysis method and reagent for copper ions |
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