CN103969318B - A kind of New Type of Carbon nanotube electrochemical sensing interface and preparation method thereof - Google Patents
A kind of New Type of Carbon nanotube electrochemical sensing interface and preparation method thereof Download PDFInfo
- Publication number
- CN103969318B CN103969318B CN201410175736.2A CN201410175736A CN103969318B CN 103969318 B CN103969318 B CN 103969318B CN 201410175736 A CN201410175736 A CN 201410175736A CN 103969318 B CN103969318 B CN 103969318B
- Authority
- CN
- China
- Prior art keywords
- sulfanilic acid
- monolayer
- quaternary ammonium
- sensing interface
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Carbon And Carbon Compounds (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a kind of New Type of Carbon nanotube electrochemical sensing interface and preparation method thereof, modified electrode electrochemical sensing interface analytical system based on the compound monolayer of new function carbon nano tube static and polymer film, utilize the surface negative charge activity of anionic electroconductive polymer film, prepare a kind of novel poly-sulfanilic acid/quaternary ammonium functionalized carbon nano-tube/monolayer film modified electrode sensing of sulfanilic acid nano-complex interface by layer upon layer electrostatic self assembly. Electrostatic self-assembled gather the whole preparation process of sulfanilic acid/quaternary ammonium cation functionalized carbon nano-tube/monolayer sulfanilic acid nano-complex membrane electrochemical sensing interface simple, save time, condition is controlled, the sensing interface stability of preparation, favorable reproducibility; The preparation process repeatability of sensing interface is high, and this has solved the problem of electrochemical sensor stability and poor reproducibility in the time of practical application to a great extent.
Description
Technical field
The invention belongs to Electroanalytical Chemistry technical field, specifically, is a kind of novel poly-sulfanilic acid/quaternary ammonium sunThe film modified electrode electro Chemical of ion functionalized carbon nano-tube/individual layer sulfanilic acid electrostatic self-assembled nano-complex sensing circleThe preparation of face.
Background technology
Modified electrode electrochemical methods has highly sensitive, and instrument equipment is simple and easily realize microminiaturization, noNeed any sample pretreatment and separation process, simplify routine analyzer and shorten the outstanding advantages such as analysis time. CNT(CNTs) large because having specific area, good conductivity and promotion electronics transmission capacity, be widely used in Electrochemical Modification electrodeIn the preparation of sensing interface. But up to now, the dispersion of CNT and the ordered fabrication at electrode surface are this research alwaysThe difficult problem in field. Once there were report surfactant dodecyl sodium sulfate and organic polymer reagent etc. to change to a certain extentBe apt to the dispersiveness [1-5] of CNT, but simple drip be coated with preparation method etc. cannot realize CNT electrode surface in orderAssembling, and disperse reagent to transmit performance at the residual electronics that can hinder sensing interface of electrode surface, thus greatly reduce carbonThe chemical property of nanometer tube modified electrode and electro catalytic activity. Research how to allow CNTs electrode surface height of formation in order,Controlled and the directed intensive stable laminate structure of structure, building sensitive, stable electrochemical sensing interface is that current divination by means of the milfoil is to be solvedKey issue. By quaternary ammonium cation group on covalent bonding, make the dispersiveness of CNT in environmentally friendly solvent waterImprove dramatically; Meanwhile, utilize the strong adsorption capacity of static of the CNT after new functionalization, by the quaternary ammonium of high degree of dispersionCationic functional carbon nano tube electrostatic self-assembled is modified glass carbon electricity in the sulfanilic acid monolayer of surface band negative electrical chargeExtremely surface, makes that CNTs disperses in order, stable modified electrode, and the electrochemistry that this modified electrode can intact maintenance CNT is livedProperty and electro catalytic activity. The poly-sulfanilic acid conductive polymer membrane of bear electricity on electrostatic self-assembled more afterwards. This is quiet layer by layerElectricity self assembly technology of preparation method is simple, and consuming time short, condition is controlled, can improve dramatically CNT in electrode surface groupOrder when dress, and can greatly improve repeatability prepared by sensing interface.
The present invention utilizes the surface negative charge activity of anionic electroconductive polymer film, and quaternary ammonium cation functionalized carbon is receivedMitron positive surface charge activity, large specific area and superior electrical conductivity performance, prepare one by layer upon layer electrostatic self assemblyPlant novel poly-sulfanilic acid/quaternized cationic functional CNT/monolayer sulfanilic acid nano combinedThing membrane electrochemical sensing interface. Up to now, this preparation method has no report at present. Taking dopamine as example, study dopamine(DA) the electrochemical oxidation behavior on this modified electrode, the unique three-D space structure having due to this electrode and high concentrationNegative electrical charge active group surface, and the collaborative enhancing electro catalytic activity that has of nano-complex film, increased the electricity of DA greatlySub-transfer rate, has reduced oxidation overpotential, thereby has greatly improved the sensitivity of measuring.
ZhangJ,GaoL,Dispersionofmutiwallcarbonnanotubesbysodiumdodecylsulfateforpreparationofmodifiedelectrodestowarddetectinghydrogenperoxide,Mater.Lett.,61,3571-3574,2007.
WuKB,SunYY,HuSS,Developmentofanamperometricindole-3-aceicacidsensorbasedoncarbonnanotubesfilmcoatedglassycarbonelectrode,Sensor.Actuat.B-Chem.,96,658-662,2003.
WangJ,MuamehM,LinYH,SolubilizationofcarbonnanotubebyNafiontowardthepreparationofamperometricbiosensors,J.Am.Chem.Soc.,125,2408-2409,2003.
RubianesMD,RivasGA,Dispersionofmulti-wallcarbonnanotubesinpolyethylenimine:anewalternativeforpreparingelectrochemicalsensors,Electrochem.Commun.,9,480-484,2007.
BolloS,FerreyraNF,RivasGA,ElectrooxidationofDNAatglassycarbonelectrodemodifiedwithmultiwallcarbonnanotubesdispersedinchitosan,Electroanalysis,19,833-840,2007.
Summary of the invention
The present invention is pin improvements over the prior art just, build a kind of novel poly-sulfanilic acid/quaternary ammonium cationThe film modified electrode electro Chemical sensing interface of functionalized carbon nano-tube/monolayer sulfanilic acid nano-complex. This sensingInterface is successfully for high stability, the high sensitivity Electrochemical Detection of dopamine. Concrete technical scheme of the present invention is as follows:
The invention discloses a kind of preparation method of novel CNT electrochemical sensing interface, based on new functionThe modified electrode electrochemical sensing interface analytical system of the compound monolayer of CNT static and polymer film, utilizes anionThe surface negative charge activity of conductive polymer membrane, and quaternary ammonium functionalized carbon nano-tube positive surface charge activity, large specific surfaceLong-pending and superior electronics transmits performance, prepares a kind of novel poly-sulfanilic acid/quaternary ammonium merit by layer upon layer electrostatic self assemblyCan carbon nano tube/monolayer film modified electrode sensing of sulfanilic acid nano-complex interface.
The preparation method of novel CNT electrochemical sensing interface of the present invention, concrete preparation process is as follows:
(1), by electrochemical method, sulfanilic acid monolayer is covalently bonded to glass-carbon electrode surface, band is a large amount ofThe sulfanilic acid electrostatic interaction that the quaternary ammonium cation functionalized carbon nano-tube of positive charge and electrode surface are electronegative, group certainlyDress makes carbon nano tube modified electrode stable, orderly dispersion;
(2), on CNT/monolayer sulfanilic acid modified electrode of preparation, pass through electrochemical method polymerizationSulfanilic acid, obtains poly-sulfanilic acid/quaternary ammonium cation functionalized carbon nano-tube/mono-by layer upon layer electrostatic self assemblyThe film modified electrode electro Chemical sensor of molecular layer sulfanilic acid nano-complex.
The invention also discloses a kind of poly-sulfanilic acid/quaternary ammonium cation functionalized carbon nano-tube/monolayer pairThe film modified electrode electro Chemical sensing interface of aminobenzenesulfonic acid nano-complex is applied to the electrochemical detection method of dopamine. SelectUnder best current potential, dopamine is carried out to electrochemical gaging by electric current-time graph method, in very wide linear concentration rangeIn, this sensor has rapid sensitive, stable current-responsive to dopamine.
The advantage that the present invention has and effect:
1. the present invention utilizes after CNT quaternary ammonium cation functionalization the dispersiveness in water fabulous: water is that electrochemistry is surveyedDetermine the friendly solvent of system, use water as dispersant and easily obtain at electrode surface the CNTs membrane material of purifying, avoided electric conductivityThereby the introducing of poor even non-conductive organic solvent and organic polymer dispersant affects electric conductivity and the electronics of sensing interfaceTransmit performance; In addition, due to the repulsive interaction between a large amount of quaternary ammonium cations of carbon nano tube surface after functionalization, effectively keep awayExempt from the reunion between CNT. By bear electricity sulfanilic acid monolayer, quaternary ammonium cation functionalized carbon nanometerThe pipe aqueous solution easily obtains the CNTs film of high-sequential assembling at electrode surface. These for CNTs in electrochemical sensorApply very crucial.
2. the present invention has very strong to bear electricity unimolecule and polymer after utilizing CNT quaternary ammonium cation functionalizationElectrostatic Absorption characteristic, many in conjunction with the electroactive site of poly-sulfanilic acid bear, the collaborative advantages such as electrochemical signals that strengthen, systemStandby poly-sulfanilic acid/quaternary ammonium cation functionalized carbon nano-tube/monolayer sulfanilic acid nano-complex filmModified electrode sensing interface degree of stability improves greatly; Electronics transmits medium CNT and poly-sulfanilic acid order degreeGreatly improve; Nano-complex film electro catalytic activity improves greatly.
3. the poly-sulfanilic acid/quaternary ammonium cation functionalized carbon nano-tube/monolayer p-aminophenyl of electrostatic self-assembledThe whole preparation process of sulfonic acid nano-complex membrane electrochemical sensing interface is simple, save time, and condition is controlled, and the sensing interface of preparation is steadyQualitative, favorable reproducibility; The preparation process repeatability of sensing interface is high, and this has solved to a great extent electrochemical sensor and has existedThe problem of stability and poor reproducibility when practical application.
Brief description of the drawings
Fig. 1 is poly-sulfanilic acid/quaternary ammonium cation functionalized carbon nano-tube/monolayer sulfanilic acid nanometerThe building process mechanism schematic diagram of complexes membrane electrochemical sensing interface;
Fig. 2 is poly-sulfanilic acid/quaternary ammonium cation functionalized carbon nano-tube/monolayer sulfanilic acid nanometerThe electronic scanner microscope figure of complexes membrane electrochemical sensing interface;
Fig. 3 (A) is naked glass-carbon electrode response cycle volt-ampere (CV) figure to DA in pH7.0PBS;
In figure, the blank PBS cushioning liquid of a-; B-is containing the PBS cushioning liquid of 0.1mMDA;
Fig. 3 (B) is poly-sulfanilic acid modified electrode response cycle volt-ampere (CV) figure to DA in pH7.0PBS;
In figure, the blank PBS cushioning liquid of a-; B-is containing the PBS cushioning liquid of 0.1mMDA;
Fig. 3 (C) is quaternary ammonium cation functionalized carbon nano-tube modified electrode response cycle volt to DA in pH7.0PBSPeace (CV) figure;
In figure, the blank PBS cushioning liquid of a-; B-is containing the PBS cushioning liquid of 0.1mMDA;
Fig. 3 (D) is poly-sulfanilic acid/quaternary ammonium cation functionalized carbon nano-tube/monolayer sulfanilic acidThe film modified electrode of nano-complex is response cycle volt-ampere (CV) figure to DA in the PBS of pH7.0;
In figure, the blank PBS cushioning liquid of a-; B-is containing the PBS cushioning liquid of 0.1mMDA;
Fig. 4 (A) is poly-sulfanilic acid/quaternary ammonium cation functionalized carbon nano-tube/monolayer sulfanilic acidThe film modified electrode of nano-complex is adding curve electric current-time response of variable concentrations DA continuously;
Fig. 4 (B) is the linear relationship chart of response current and DA concentration, operating potential: 0.20V;
Detailed description of the invention
The invention discloses a kind of novel poly-sulfanilic acid/quaternary ammonium cation functionalized carbon nano-tube/individual layer pairThe electroanalysis of sensitive determination dopamine is prepared and stablized to the film modified electrode electro Chemical sensing interface of aminobenzenesulfonic acid nano-complexMethod is that a kind of modified electrode electrochemistry based on the compound monolayer of new function carbon nano tube static and polymer film passesSensor analytical system, is first covalently bonded to glass-carbon electrode surface by electrochemical process by sulfanilic acid monolayer, bandThe sulfanilic acid electrostatic interaction that the quaternary ammonium cation functionalized carbon nano-tube of positive charge and electrode surface are electronegative, makesStable carbon nano tube modified electrode. On CNT/monolayer sulfanilic acid modified electrode of preparation, pass through electricityChemical method polymerization sulfanilic acid, obtains poly-sulfanilic acid/quaternary ammonium cation function by layer upon layer electrostatic self assemblyThe film modified electrode electro Chemical sensing interface of carbon nano tube/monolayer sulfanilic acid nano-complex.
Study the electrochemical behavior of dopamine (DA) on this modified electrode, due to this modified electrode electrochemical sensing circleThe negative electrical charge active group surface of unique three-D space structure that mask has and high concentration, has increased the electricity of DA on this interface greatlySub-transfer rate, and the collaborative enhancing catalytic oxidation DA activity that has of nano-complex film, thus greatly improved withSensitivity when it measures DA for sensing interface electrochemical methods.
Poly-sulfanilic acid/quaternary ammonium cation CNT/monolayer sulfanilic acid prepared by the present invention is receivedRice complexes membrane modified electrode and naked glass-carbon electrode, poly-sulfanilic acid modified electrode and quaternary ammonium cation functionalized carbon nanometerPipe modified electrode is compared, and electro catalytic activity obviously increases, and has greatly improved the electrochemical gaging sensitivity to dopamine. Be chosen inUnder optimal response current potential, dopamine is carried out to electrochemical gaging by electric current-time graph method. In very wide linear concentration rangeIn, this sensor has the current-responsive of rapid sensitive to dopamine, and excellent stability.
Poly-sulfanilic acid/quaternary ammonium cation functionalized carbon nano-tube/monolayer p-aminophenyl prepared by the present inventionThe film modified electrode of sulfonic acid nano-complex, preparation process repeatability is fine, greatly reduces electrochemical sensing interface at each timeDeviation in preparation.
Below in conjunction with Figure of description, technical scheme of the present invention is described in further detail:
Naked glass-carbon electrode (GCE) is polished on deerskin with the alumina powder of 0.3 μ m and 0.05 μ m successively, be polished to mirrorFace. With absolute ethyl alcohol, the each 5min of distilled water ultrasonic cleaning. The three-electrode system that is working electrode pretreated glass-carbon electrodePut into the 0.1MKCl solution containing 0.003M sulfanilic acid, the speed circulation of sweeping with 0.05V/s between 0.6～1.2V lies prostratePeace scanning 10 circles, dry after taking out and cleaning with redistilled water, drip the laboratory self-control quaternary ammonium cation functionalization of 4 μ LCNT aqueous dispersion (1mg/mL), dries, and rinses with redistilled water, then containing 0.005M sulfanilic acidIn 0.1MKCl solution, enclose with the fast cyclic voltammetry scan 5 of sweeping of 0.05V/s in the potential region of-0.2～2.0V, take out rear with twoInferior distilled water flushing, dries. Obtain poly-sulfanilic acid/quaternary ammonium cation functionalized carbon nano-tube/monolayer to aminoThe film modified electrode of benzene sulfonic acid nano-complex.
Fig. 1 is poly-sulfanilic acid/quaternary ammonium cation functionalized carbon nano-tube/monolayer sulfanilic acid nanometerThe whole modification mechanism schematic diagram of complexes membrane modified electrode. Positively charged quaternary ammonium cation functionalized carbon nano-tube withThe monolayer sulfanilic acid electrostatic interaction that electrode surface is electronegative, makes directed stable carbon nano tube modified electricityThe utmost point; Form afterwards poly-sulfanilic acid/quaternary ammonium cation functionalized carbon nano-tube/monolayer sulfanilic acid nanometer multipleCompound film, makes this electrode surface form the negative electrical charge active group surface of unique three-D space structure and high concentration, thereby canGreatly improve mass transfer rate and the electronics transfer rate of DA on electrochemical sensing interface.
Fig. 2 is poly-sulfanilic acid/quaternary ammonium cation functionalized carbon nano-tube/monolayer sulfanilic acid nanometerThe electronic scanner microscope figure of complexes membrane electrochemical sensing interface. From figure, can obviously find out thin layer carbon nano tube surfaceCovered by one deck organic polymer, confirmed the interfacial assembly process mechanism shown in Fig. 1.
Fig. 3 is in the different modifying electrode PBS cushioning liquid that is 7.0 at pH, the cyclic voltammogram while having or not DA. From figureCan find out, DA modifies at naked glass-carbon electrode (A), poly-sulfanilic acid modified electrode (B) and quaternary ammonium functionalized carbon nano-tubeOxidation peak current potential on electrode (C) is respectively 0.307V, 0.227V, 0.269V, current-responsive value be 3.25 μ A, 5.73 μ A,10.56 μ A, and in poly-sulfanilic acid/quaternary ammonium cation functionalized carbon nano-tube/monolayer sulfanilic acid nanometerThe oxidation peak current potential that records DA on complexes membrane modified electrode (D) is reduced to 0.197V, and current-responsive value is 18.49 μ A, illustratesUnder the collaborative electrocatalysis of poly-sulfanilic acid and CNT, make DA oxidized under lower current potential, simultaneouslyTo higher current-responsive.
Fig. 4 (A) is poly-sulfanilic acid/quaternary ammonium cation functionalized carbon nano-tube/monolayer sulfanilic acidThe film modified electrode of nano-complex adds continuously curve electric current-time response of variable concentrations DA under the fixed potential of 0.2V,Fig. 4 (B) is the linear relationship chart of response current and DA concentration. Sensor has the response of rapid sensitive to DA, at 2.0～102.0 μIn M concentration range, the concentration of response current and DA is fine linear relationship, and linear concentration range is wide. Press S/N=3 and calculate, weMethod is measured detecting of DA and is limited to 0.02 μ M, lower than what report in many documents. To 50 μ MDA METHOD FOR CONTINUOUS DETERMINATION 10 times, current-responsive phaseBe 0.23% to standard deviation (RSD). It is heavy after 4 DEG C of refrigerators are preserved 1 month that modified electrode is placed in pH7.0 phosphate bufferThe new DA that measures, current-responsive only declines 3%. Repeat to prepare sensing interface 6 times, current-responsive relative standard deviation (RSD) is only1.5％。
What more than enumerate is only part specific embodiment of the present invention, obviously, the invention is not restricted to above embodiment, also canThere to be many distortion, all changes that those of ordinary skill in the art can directly derive or associate from content disclosed by the inventionShape, all should think protection scope of the present invention.
Claims (3)
1. a novel CNT electrochemical sensing interface, is characterized in that, based on novel quaternary ammonium cation functionalized carbonThe modified electrode electrochemical sensing interface analytical system of the compound monolayer of nanotube static and polymer film, utilizes anion to leadThe surface negative charge activity of electric polymer film, and quaternary ammonium functionalized carbon nano-tube positive surface charge activity, large specific areaTransmit performance with superior electronics, by layer upon layer electrostatic self assembly prepare a kind of novel poly-sulfanilic acid/quaternary ammonium sun fromSonization function CNT/monolayer sulfanilic acid nano-complex membrane electrochemical sensing interface.
2. the preparation method of novel CNT electrochemical sensing interface according to claim 1, is characterized in that toolBody preparation process is as follows:
(1), by electrochemical method, sulfanilic acid monolayer is covalently bonded to glass-carbon electrode surface, positively chargedThe sulfanilic acid monolayer electrostatic interaction that quaternary ammonium cation functionalized carbon nano-tube and electrode surface are electronegative, makesThe carbon nano tube modified electrode of steady ordered;
(2), on CNT/monolayer sulfanilic acid modified electrode of preparation, pass through electrochemical method polymerization to ammoniaBase benzene sulfonic acid, obtains poly-sulfanilic acid/quaternary ammonium cation functionalized carbon nano-tube/unimolecule by layer upon layer electrostatic self assemblyThe film modified electrode electro Chemical sensor of layer sulfanilic acid nano-complex.
3. poly-sulfanilic acid/quaternary ammonium cation function that preparation method according to claim 2 is prepared fromThe film modified electrode electro Chemical sensor application of carbon nano tube/monolayer sulfanilic acid nano-complex is in dopamineElectrochemical Detection, is characterized in that, prepared New Type of Carbon nanotube electrochemical sensing interface has significant electricity to urge to dopamineChange oxidation effectiveness, by comparing the response signal to noise ratio to dopamine under different potentials, be chosen under optimal response current potential electricity consumptionStream-time graph method has been carried out electrochemical gaging to dopamine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410175736.2A CN103969318B (en) | 2014-04-29 | 2014-04-29 | A kind of New Type of Carbon nanotube electrochemical sensing interface and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410175736.2A CN103969318B (en) | 2014-04-29 | 2014-04-29 | A kind of New Type of Carbon nanotube electrochemical sensing interface and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103969318A CN103969318A (en) | 2014-08-06 |
| CN103969318B true CN103969318B (en) | 2016-05-18 |
Family
ID=51239069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410175736.2A Expired - Fee Related CN103969318B (en) | 2014-04-29 | 2014-04-29 | A kind of New Type of Carbon nanotube electrochemical sensing interface and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103969318B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104831277B (en) * | 2015-04-13 | 2017-06-06 | 济南大学 | A kind of preparation method and application of the poly- p-aminobenzene sulfonic acid/titanium dioxide/carbon nanotube composite materials with electrode as substrate |
| CN105548313A (en) * | 2016-01-06 | 2016-05-04 | 辽宁大学 | Modified electrode for detecting low-concentration dopamine and making method and application thereof |
| CN108169298A (en) * | 2017-12-19 | 2018-06-15 | 江南大学 | A kind of preparation method for the disposable sensor for detecting dopamine |
| CN114544720B (en) * | 2022-01-12 | 2023-09-05 | 肇庆学院 | Electrochemical sensor for ultra-sensitively detecting enrofloxacin and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1395094A (en) * | 2002-07-18 | 2003-02-05 | 武汉大学 | Electrochemical sensor for determining dopamine |
| CN102141536A (en) * | 2010-12-10 | 2011-08-03 | 北京化工大学 | Composite material electrode based on carbon nano tubes as well as preparation method and application thereof |
-
2014
- 2014-04-29 CN CN201410175736.2A patent/CN103969318B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1395094A (en) * | 2002-07-18 | 2003-02-05 | 武汉大学 | Electrochemical sensor for determining dopamine |
| CN102141536A (en) * | 2010-12-10 | 2011-08-03 | 北京化工大学 | Composite material electrode based on carbon nano tubes as well as preparation method and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| Fabrication of poly(orthanilic acid)–multiwalled carbon nanotubes composite film-modified glassy carbon electrode and its use for the simultaneous determination of uric acid and dopamine in the presence of ascorbic acid;Lei Zhang et al.;《J Solid State Electrochem》;20100805;第15卷;第804页Electrochemical behavior of AA, DA, and UA at PABS–MWNT/GCE * |
| Simultaneous determination of methotrexate and calcium folinate with electrochemical method based on a poly-ABSA/functionalized MWNTs composite film modified electrode;Zuoyi Zhu et al.;《Journal of Electroanalytical Chemistry》;20130906;第708卷;第1、2.3节 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103969318A (en) | 2014-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Yola et al. | Development of molecular imprinted sensor including graphitic carbon nitride/N-doped carbon dots composite for novel recognition of epinephrine | |
| Ping et al. | Application of electrochemically reduced graphene oxide on screen-printed ion-selective electrode | |
| Sajid et al. | Chemically modified electrodes for electrochemical detection of dopamine in the presence of uric acid and ascorbic acid: a review | |
| Jiang et al. | All-solid-state potentiometric sensor using single-walled carbon nanohorns as transducer | |
| Hernández et al. | Reduced graphene oxide films as solid transducers in potentiometric all-solid-state ion-selective electrodes | |
| Mousavi et al. | Poly (3, 4-ethylenedioxythiophene)(PEDOT) doped with carbon nanotubes as ion-to-electron transducer in polymer membrane-based potassium ion-selective electrodes | |
| Luo et al. | Sensitive detection of gallic acid based on polyethyleneimine-functionalized graphene modified glassy carbon electrode | |
| Fierke et al. | Effects of architecture and surface chemistry of three-dimensionally ordered macroporous carbon solid contacts on performance of ion-selective electrodes | |
| Mazloum-Ardakani et al. | High sensitive sensor based on functionalized carbon nanotube/ionic liquid nanocomposite for simultaneous determination of norepinephrine and serotonin | |
| Zhou et al. | Effective solid contact for ion-selective electrodes: tetrakis (4-chlorophenyl) borate (TB–) anions doped nanocluster films | |
| Kałuża et al. | Multiwalled carbon nanotubes–poly (3-octylthiophene-2, 5-diyl) nanocomposite transducer for ion-selective electrodes: Raman spectroscopy insight into the transducer/membrane interface | |
| Paczosa-Bator et al. | Application of nanostructured TCNQ to potentiometric ion-selective K+ and Na+ electrodes | |
| Wang et al. | Simultaneous determination of acetaminophen, theophylline and caffeine using a glassy carbon disk electrode modified with a composite consisting of poly (Alizarin Violet 3B), multiwalled carbon nanotubes and graphene | |
| CN103387564B (en) | Phenols electrochemical sensor based on ionic liquid-graphene oxide sensitive membrane | |
| CN103969318B (en) | A kind of New Type of Carbon nanotube electrochemical sensing interface and preparation method thereof | |
| Ebrahimi et al. | A ceria NPs decorated graphene nano-composite sensor for sulfadiazine determination in pharmaceutical formulation | |
| Wang et al. | Ionic Liquid Functionalized Graphene‐Based Electrochemical Biosensor for Simultaneous Determination of Dopamine and Uric Acid in the Presence of Ascorbic Acid | |
| Wang et al. | Application of nanosized gold and graphene modified carbon ionic liquid electrode for the sensitive electrochemical determination of folic acid | |
| Nguyen et al. | Sodium dodecyl sulfate doped polyaniline for enhancing the electrochemical sensitivity of mercury ions | |
| CN1201146C (en) | Electrochemical sensor for determining dopamine | |
| Nie et al. | Simultaneous determination of folic acid and uric acid under coexistence of L-ascorbic acid using a modified electrode based on poly (3, 4-ethylenedioxythiophene) and functionalized single-walled carbon nanotubes composite | |
| Hong et al. | Application of multiwalled carbon nanotubes/ionic liquid modified electrode for amperometric determination of sulfadiazine | |
| Wang et al. | Simultaneous voltammetric determination of dopamine and uric acid based on Langmuir–Blodgett film of calixarene modified glassy carbon electrode | |
| Li et al. | Nonenzymatic electrochemical biosensor based on novel hydrophilic ferrocene‐terminated Hyperbranched polymer and its application in glucose detection | |
| CN106018519A (en) | Ionic liquid functional composite membrane modified electrode and preparation method and application thereof to detection of chlorophenol |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160518 Termination date: 20190429 |