CN103913448A - Real-time dynamic detection system for hydroxyl radicals generated by photo-catalytic reaction - Google Patents
Real-time dynamic detection system for hydroxyl radicals generated by photo-catalytic reaction Download PDFInfo
- Publication number
- CN103913448A CN103913448A CN201410157985.9A CN201410157985A CN103913448A CN 103913448 A CN103913448 A CN 103913448A CN 201410157985 A CN201410157985 A CN 201410157985A CN 103913448 A CN103913448 A CN 103913448A
- Authority
- CN
- China
- Prior art keywords
- real
- detection system
- hydroxyl
- time
- dynamic detection
- 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.)
- Granted
Links
Abstract
The invention discloses a real-time dynamic detection system for hydroxyl radicals generated by photo-catalytic reaction. The real-time dynamic detection system comprises an excitation light source, a photo-catalyst and hydroxyl capturing probe storing container, at least one oxidant storing container, a detection pond, a photomultiplier and a signal analyzer host, wherein both the photo-catalyst and hydroxyl capturing probe storing container and the oxidant storing container are communicated with the detection pond; the photomultiplier is used for converting optical signals generated in the detection pond to electric signals; the photomultiplier is connected with the signal analyzer host; the signal analyzer host is connected with a computer terminal. A method for detecting by using the real-time dynamic detection system is simple to operate; the processes of separating samples offline and then detecting the sample online and the like are omitted, and therefore, the method is high in detection speed, capable of improving the working efficiency and applicable to quick screening and evaluation of hydroxyl-generating capability of a photo-catalytic material.
Description
Technical field
The present invention relates to the Real-time and Dynamic Detection system that a kind of light-catalyzed reaction produces hydroxyl radical free radical.
Background technology
Hydroxyl radical free radical (OH) has very strong oxidability (E=2.7 or 1.8V are under acidity or neutrallty condition), and all organic contaminants of almost can degrading, have therefore caused people's research enthusiasm greatly.In physical environment, OH mainly comes from light Fenton's reaction, the photodissociation of nitrate and natural organic matter (NOM) etc.At engineering field, particularly (AOT) in the high-level oxidation technology of development in recent years, as Fenton's reaction, ozone oxidation, electrolytic oxidation etc., OH is topmost a kind of active substance, play therein conclusive effect, therefore also obtained paying close attention to widely and deep research.At present, photocatalysis technology is as a kind of novel high-level oxidation technology, because the advantages such as its green, energy-saving and environmental protection have caused people's research enthusiasm greatly.The groundwork principle of conductor photocatalysis is (with TiO
2for example): work as TiO
2be subject to after photon excitation that energy is equal to, or greater than its with gap length degree, the valence band electronics that is positioned at ground state is excited to conduction band, thereby has generated the oxidation hole of valence band and the free electron (electron-hole pair) of conduction band.Electron-hole pair has strong reduction and oxidability, and can free migration, after they move to semiconductor surface with the little molecule of adsorption (as H
2o, OH
-, O
2) a series of reaction occurs, and to generate active oxygen species (be mainly OH, O
2 -, H
2o
2).Wherein OH is a kind of very important active oxygen in light-catalyzed reaction, and it plays a part crucial in photocatalytic oxidation degradation pollutant process.In addition, the cell membrane that OH can destroy microorganisms also plays an important role in the photo-catalyst process of catalysis material.Therefore, the generation quantity of OH is to weigh a kind of important indicator of properties of catalyst.But the character of OH is active, the life-span short (delicate level), and it is measured is a huge challenge.
The method of at present conventional measurement OH mainly contains electronic self-rotary resonant technology (ESR) and fluorescence probe method, but these methods in actual applications, particularly in photocatalysis field, has its limitation separately.For example, at present the most frequently used capture probe of ESR is DMPO, but it is caught specificity aspect and still has dispute.Catalysis material can produce oxidation hole in light-catalyzed reaction, has scholar's research to think, the adduct that DMPO produces with the reaction of oxidation hole is identical with the adduct of OH, and this may cause too high estimation catalysis material to produce the ability of OH.Fluorescence method is also to measure at present the common method of OH, has now developed the many kinds of probe molecules of measuring for OH, but the specificity of some probe molecule also exists dispute at present.When OH that this external mensuration light-catalyzed reaction produces, their general operating processes are first probe to be joined in system to be measured, take out a part and separate, and then upper machine measures after reaction, and therefore complex operation step, is unfavorable for the rapid and accurate determination to OH.Therefore, develop the method for OH in a kind of simple, quick, accurate, special mensuration light-catalyzed reaction significant.
Summary of the invention
The object of this invention is to provide the Real-time and Dynamic Detection system that a kind of light-catalyzed reaction produces hydroxyl radical free radical, the present invention's chemical photic device that will flow combines with photocatalysis apparatus, realize OH to producing in light-catalyzed reaction simple, fast, in real time, online, sensitive, special mensuration, can be used as the assessment that light-catalyzed reaction produces OH ability, and by measuring the generative capacity of OH, evaluate other performance (as photocatalytic oxidation degradation ability and sterilizing ability) of relative catalysis material, and catalysis material generates the generation behavioral study of OH.
Light-catalyzed reaction provided by the present invention produces the Real-time and Dynamic Detection system of hydroxyl radical free radical, comprises excitation source, photocatalyst and hydroxyl capture probe container, at least one oxygenant container, detection cell, photomultiplier and signal analyzer main frame;
Described photocatalyst and hydroxyl capture probe container and described oxygenant container are all connected with described detection cell;
Described photomultiplier converts electric signal to for the light signal that described detection cell is produced;
Described photomultiplier is connected with described signal analyzer main frame, and described signal analyzer main frame is connected with a computer terminal.
In above-mentioned Real-time and Dynamic Detection system, between described photocatalyst and hydroxyl capture probe container and described detection cell, be provided with peristaltic pump, quantitatively to pump into photocatalyst and capture probe in described detection cell;
Between described oxygenant container and described detection cell, be provided with peristaltic pump, in described detection cell, pump into oxygenant with quantitative.
In above-mentioned Real-time and Dynamic Detection system, described excitation source is uviol lamp source (as mercury lamp) or visible light source (as xenon lamp).
The OH that Real-time and Dynamic Detection system of the present invention produces in can on-line determination light-catalyzed reaction, can realize the continuous track determining of real-time online that OH is generated to behavior, the dynamic information changing by luminous signal, research light-catalyzed reaction generates the generation behavior of OH, realizes further the evaluation (as photocatalytic oxidation degradation pollutant ability and sterilizing ability) of the performance relevant to OH to catalysis material.
Real-time and Dynamic Detection system of the present invention specifically can be measured photocatalyst as the ability of the generation such as titania or zinc paste OH; Selected capture probe is phthalylhydrazine (Phth); 2 described oxygenant containers are set simultaneously, hold respectively H
2o
2and K
5cu (HIO
6)
2.
The present invention compared with prior art, has the following advantages:
1) Real-time and Dynamic Detection system instrument device of the present invention is simple, and cost is low, is easy to business promotion.
2) use the highly sensitive of Real-time and Dynamic Detection system detection of the present invention, specificity is good, and by OH original position is caught, the adduct stable in properties of generation, has overcome short problem of its life-span.
3) method that uses Real-time and Dynamic Detection system of the present invention to detect is simple to operate, do not need sample to carry out off-line separation, then go up the processes such as machine testing, therefore finding speed is fast, improve work efficiency, be applicable to catalysis material to generate rapid screening and the assessment of OH ability.
4) while using Real-time and Dynamic Detection system of the present invention to detect, online the real time measure, the dynamic change can online tracing OH generating, by dynamic information, studies its generation behavior.
Accompanying drawing explanation
Fig. 1 (a) light-catalyzed reaction of the present invention produces the schematic diagram of the Real-time and Dynamic Detection system of hydroxyl radical free radical.
Fig. 1 (b) is for to set up the schematic diagram after six-way valve in Real-time and Dynamic Detection system shown in Fig. 1 (a).
In Fig. 1 (a) and Fig. 1 (b), each mark is as follows:
1 excitation source, 2 photocatalysts and hydroxyl capture probe container, 3,4 oxygenant containers, 5 detection cells, 6 photomultipliers, 7 signal analyzer main frames, 8 computer terminals, 9,10,11,12 peristaltic pumps, 13 carrier fluid containers, 14 six-way valves.
Fig. 2 is that hydroxyl capture probe mixes rear chemiluminescence signal over time with two kinds of oxygenants with colloidal tio 2, and wherein Fig. 2 (a) is that before and after optical excitation, titania (P25) colloid mixes rear chemiluminescence signal over time with oxygenant continuous flow; Fig. 2 (b) injects and mixes rear chemiluminescence signal over time for titania (P25) colloid and oxidant flow before and after optical excitation; P25(0.1mg/ml), Phth(1 μ M), H
2o
2(50 μ M), K
5cu (HIO
6)
2(100 μ M), light intensity (0.8mW/cm
2).
Fig. 3 is for adding after different quenchers compared with control group chemiluminescence signal over time to capture probe and titania solution, wherein, Fig. 3 (a) is for adding after hydroxyl radical free radical quencher (isopropyl alcohol) compared with control group chemiluminescence signal over time; Fig. 3 (b) is for adding after superoxide radical quencher (SOD) compared with control group chemiluminescence signal over time; Fig. 3 (c) is for adding singlet oxygen quencher (NaN
3) after chemiluminescence signal is over time compared with control group; Isopropyl alcohol (0.1M), SOD(6U/ml), NaN
3(1 μ M).
Embodiment
The experimental technique using in following embodiment if no special instructions, is conventional method.
Material, reagent etc. used in following embodiment, if no special instructions, all can obtain from commercial channels.
As shown in Fig. 1 (a), the Real-time and Dynamic Detection system that produces hydroxyl radical free radical for light-catalyzed reaction provided by the invention comprises excitation source 1, photocatalyst and hydroxyl capture probe container 2,2 oxygenant containers 3 and 4, detection cell 5 and photomultipliers 6.Excitation source 1 can be selected mercury lamp or xenon lamp, for exciting light catalyzer.Photocatalyst and hydroxyl capture probe container 2 are for holding photocatalyst to be detected and capture probe Phth, and photocatalyst and capture probe container 2 are connected with detection cell 5, and between them, are provided with a peristaltic pump 9, for power is provided.Oxygenant container 3 and 4 is for holding oxygenant, there is chemiluminescence reaction in the product (5-hydroxyl-phthalylhydrazine) after being combined with probe with the hydroxyl radical free radical that photocatalyst produces, produce luminous signal, so that detected, oxygenant container 3 and 4 is connected with detection cell 5, and between them, be provided with a peristaltic pump 10,11, for power is provided.Photomultiplier 6 changes into electric signal for the light signal that detection cell 5 is produced, and then transfers to signal analyzer main frame 7, and signal analyzer main frame 7 is connected with computer terminal 8, and testing result is shown.
Take titanium dioxide semiconductor catalysis material (P25) as example, the specific implementation process of the present embodiment Real-time and Dynamic Detection system is described:
As shown in Fig. 1 (a), first a certain amount of Phth is joined in the container 2 that colloidal tio 2 is housed, in the time that experiment is carried out, start flow device colloidal tio 2 is sent in sensing chamber and other two kinds of oxygenant (H
2o
2and K
5cu (HIO
6)
2) mix chemiluminescence reaction occurs, producing luminous signal, the photomultiplier 6 being simultaneously positioned at below detection cell converts the light signal receiving to electric signal, through after amplifying and processing, is transferred on computer display screen by data line.In the time that light source is not opened, in colloidal tio 2, owing to there is no the generation of OH, the Phth in colloid is because luminescence efficiency is very low, after mixing with oxygenant in detection cell, luminous signal is very faint, there will be very low continuous background signal (Fig. 2 (a)) in time in computer display screen, otherwise, in the time that light source is opened, after being excited, titania can produce OH, now the Phth in solution can carry out specific catching to it, generate 5-OH-Phth, 5-OH-Phth has high luminescent quantum productive rate, after mixing with oxygenant, can produce strong chemiluminescence signal in detection cell, and along with illumination continues to carry out, OH is constantly hunted down, therefore the amount of 5-OH-Phth constantly accumulation in solution, the luminous signal producing constantly strengthens, therefore in display screen, there will be a chemiluminescence signal curve constantly strengthening in time, after the Phth in solution is consumed completely, now chemiluminescence intensity reaches platform (Fig. 2 (a)).
As shown in Fig. 1 (b), be with the difference of Fig. 1 (a), photocatalyst and capture probe container 2 and oxygenant container 3 and 4 and detection cell 5 between be connected again a six-way valve 14, equally first Phth is joined in colloidal tio 2, when experiment starts, start flow device regulate six-way valve by colloidal tio 2 by being sent in detection cell and mixing with oxygenant from the carrier fluid of carrier fluid container 13, in the time that light source is not opened, colloidal tio 2 enters detection cell 5 by six-way valve 14, now owing to not having OH to produce, in solution, do not have 5-OH-Phth to generate, therefore there is no obvious peak shape signal, in the time that light source is opened, colloidal tio 2 produces OH, is caught rear generation 5-OH-Phth by Phth, therefore after colloidal tio 2 enters sensing chamber by six-way valve 14, mixes with oxygenant chemiluminescence reaction occurs, and produces luminous signal.Because the colloidal tio 2 solution of injection, in pipeline transport process, diffusion process occurs, cause 5-OH-Phth concentration therefrom to reduce gradually mind-set both sides, therefore on display screen, can produce an obvious peak shape signal, and peak intensity also can constantly strengthen along with the prolongation of time, finally reach platform (Fig. 2 (b)), show that the Phth in colloid is now consumed completely.
For further the above-mentioned luminous signal detecting of checking is from OH, specificity when the present invention detects this Real-time and Dynamic Detection system is investigated.
As shown in Figure 3, catch to adding different quenchers to carry out specificity to active oxygen in colloidal tio 2, O is found in experiment
2 -with
1o
2quencher SOD and NaN
3chemiluminescence intensity, all without impact, is proved to O
2 -with
1o
2minimizing the generation of 5-OH-Phth is not affected; And hydroxyl radical free radical quencher can suppress chemiluminescent enhancing completely, after proving that OH is caught by quencher competition, suppress the generation of 5-OH-Phth.Therefore, utilize the Real-time and Dynamic Detection system of the present invention can specific detection OH.
Claims (8)
1. light-catalyzed reaction produces a Real-time and Dynamic Detection system for hydroxyl radical free radical, it is characterized in that: described Real-time and Dynamic Detection system comprises excitation source, photocatalyst and hydroxyl capture probe container, at least one oxygenant container, detection cell, photomultiplier and signal analyzer main frame;
Described photocatalyst and hydroxyl capture probe container and described oxygenant container are all connected with described detection cell;
Described photomultiplier converts electric signal to for the light signal that described detection cell is produced;
Described photomultiplier is connected with signal analyzer main frame, and described signal analyzer main frame is connected with a computer terminal.
2. Real-time and Dynamic Detection system according to claim 1, is characterized in that: between described photocatalyst and chemiluminescence probe container and described detection cell, be provided with peristaltic pump;
Between described oxygenant container and described detection cell, be provided with peristaltic pump.
3. Real-time and Dynamic Detection system according to claim 1 and 2, is characterized in that: described excitation source is uviol lamp source or visible light source.
4. according to the Real-time and Dynamic Detection system described in any one in claim 1-3, it is characterized in that: between described photomultiplier and described computer terminal, be provided with signal analyzer main frame.
5. the application of Real-time and Dynamic Detection system in the ability of evaluating photocatalyst generation hydroxyl radical free radical described in any one in claim 1-4.
6. application according to claim 5, is characterized in that: described photocatalyst is titania or zinc paste.
7. application according to claim 6, is characterized in that: the hydroxyl capture probe holding in described photocatalyst and hydroxyl capture probe container is phthalylhydrazine.
8. application according to claim 7, is characterized in that: described Real-time and Dynamic Detection system comprises 2 described oxygenant containers, holds respectively H
2o
2and K
5cu (HIO
6)
2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410157985.9A CN103913448B (en) | 2014-04-18 | 2014-04-18 | Real-time dynamic detection system for hydroxyl radicals generated by photo-catalytic reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410157985.9A CN103913448B (en) | 2014-04-18 | 2014-04-18 | Real-time dynamic detection system for hydroxyl radicals generated by photo-catalytic reaction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103913448A true CN103913448A (en) | 2014-07-09 |
| CN103913448B CN103913448B (en) | 2017-01-18 |
Family
ID=51039291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410157985.9A Active CN103913448B (en) | 2014-04-18 | 2014-04-18 | Real-time dynamic detection system for hydroxyl radicals generated by photo-catalytic reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103913448B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136972A (en) * | 2015-09-09 | 2015-12-09 | 武汉理工大学 | Comparison detection method for nano photocatalytic activity capability |
| CN108169218A (en) * | 2017-12-15 | 2018-06-15 | 中国科学院合肥物质科学研究院 | A kind of hydroxy radical in-situ measurement system |
| CN110554026A (en) * | 2018-05-30 | 2019-12-10 | 中国农业科学院烟草研究所 | Chemiluminescence technology for detecting hydroxyl free radicals |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1936546A (en) * | 2006-10-19 | 2007-03-28 | 四川大学 | Method for detecting chemical oxygen request-amount based on light-catalytic chemical illumination and detection device |
| CN101929975A (en) * | 2010-07-30 | 2010-12-29 | 同济大学 | Electrochemical analysis method for hydroxyl radicals |
| CN103033485A (en) * | 2011-09-29 | 2013-04-10 | 中科天融(北京)科技有限公司 | Water total-phosphorus and total-nitrogen online monitoring apparatus |
| CN103616525A (en) * | 2013-12-11 | 2014-03-05 | 三峡大学 | Instrument for rapidly monitoring total phosphorus in water on line |
-
2014
- 2014-04-18 CN CN201410157985.9A patent/CN103913448B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1936546A (en) * | 2006-10-19 | 2007-03-28 | 四川大学 | Method for detecting chemical oxygen request-amount based on light-catalytic chemical illumination and detection device |
| CN101929975A (en) * | 2010-07-30 | 2010-12-29 | 同济大学 | Electrochemical analysis method for hydroxyl radicals |
| CN103033485A (en) * | 2011-09-29 | 2013-04-10 | 中科天融(北京)科技有限公司 | Water total-phosphorus and total-nitrogen online monitoring apparatus |
| CN103616525A (en) * | 2013-12-11 | 2014-03-05 | 三峡大学 | Instrument for rapidly monitoring total phosphorus in water on line |
Non-Patent Citations (7)
| Title |
|---|
| HAJNALKA CZILI ET AL: "Applicability of coumarin for detecting and measuring hydroxyl radicals generated by photoexcitation of TiO2 nanoparticles", 《APPLIED CATALYSIS B: ENVIRONMENTAL》 * |
| MASAHIRO TOKUMURA ET AL: "Iron redox cycling in hydroxyl radical generation during the photo-Fenton oxidative degradation: Dynamic change of hydroxyl radical concentration", 《APPLIED CATALYSIS B: ENVIRONMENTAL》 * |
| TSUTOMU HIRAKAWA ET AL: "Photocatalytic reactivity for O2 and OH radical formation in anatase and rutile TiO2 suspension as the effect of H2O2 addition", 《APPLIED CATALYSIS A: GENERAL》 * |
| ZHANG BO-TAO ET AL: "Study on superoxide and hydroxyl radicals generated in indirect electrochemical oxidation by chemiluminescence and UV-Visible spectra", 《JOURNAL OF ENVIRONMENTAL SCIENCES》 * |
| 侯乙东: "TiO2纳米晶结构形态、光电特性及其光催化性能研究", 《中国优秀博硕士学位论文全文数据库(硕士)工程科技Ⅰ辑》 * |
| 侯乙东等: "TiO2 纳米晶表面羟基自由基的生成对光催化性能的影响", 《福州大学学报》 * |
| 县涛等: "TiO2纳米颗粒的制备、光催化性能及羟基自由基研究", 《纳米技术与精密工程》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136972A (en) * | 2015-09-09 | 2015-12-09 | 武汉理工大学 | Comparison detection method for nano photocatalytic activity capability |
| CN108169218A (en) * | 2017-12-15 | 2018-06-15 | 中国科学院合肥物质科学研究院 | A kind of hydroxy radical in-situ measurement system |
| CN110554026A (en) * | 2018-05-30 | 2019-12-10 | 中国农业科学院烟草研究所 | Chemiluminescence technology for detecting hydroxyl free radicals |
| CN110554026B (en) * | 2018-05-30 | 2021-11-09 | 中国农业科学院烟草研究所 | Chemiluminescence method for detecting hydroxyl free radicals |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103913448B (en) | 2017-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Valenti et al. | Essential role of electrode materials in electrochemiluminescence applications | |
| Lin et al. | Oxidation reaction between periodate and polyhydroxyl compounds and its application to chemiluminescence | |
| Lin et al. | Peroxynitrous-acid-induced chemiluminescence of fluorescent carbon dots for nitrite sensing | |
| Cui et al. | Electrochemiluminescence of luminol in alkaline solution at a paraffin-impregnated graphite electrode | |
| Xu et al. | Fabrication of gold nanoparticles by laser ablation in liquid and their application for simultaneous electrochemical detection of Cd2+, Pb2+, Cu2+, Hg2+ | |
| Erxleben et al. | Atomic absorption spectroscopy for mercury, automated by sequential injection and miniaturized in lab-on-valve system | |
| Yuan et al. | Determination of subnanomolar levels of hydrogen peroxide in seawater by reagent-injection chemiluminescence detection | |
| Xiao et al. | Carbon dioxide effects on luminol and 1, 10-phenanthroline chemiluminescence | |
| Fu et al. | The electrochemiluminescence resonance energy transfer between Fe-MIL-88 metal–organic framework and 3, 4, 9, 10-perylenetetracar-boxylic acid for dopamine sensing | |
| CN107727717A (en) | The preparation method and application of Polychlorinated biphenyls optical electro-chemistry aptamer sensor | |
| Li et al. | Porphyrin nanosphere–graphene oxide composite for ehanced electrochemiluminescence and sensitive detection of Fe3+ in human serum | |
| Lv et al. | A ratiometric electrochemiluminescent/electrochemical strategy based on novel designed BPYHBF nanorod and Fc-MOF with tungsten for ultrasensitive AFB1 detection | |
| Li et al. | Determination of Gallic Acid by Flow Injection Analysis Based on Luminol‐AgNO3‐Ag NPs Chemiluminescence System | |
| CN103913448B (en) | Real-time dynamic detection system for hydroxyl radicals generated by photo-catalytic reaction | |
| Garg et al. | Nano-enabled sensing of per-/poly-fluoroalkyl substances (PFAS) from aqueous systems–A review | |
| Liu et al. | Fabrication of a highly sensitive electrochemiluminescence chlorpromazine sensor using a Ru (bpy) 3 2+ incorporated carbon quantum dot–gelatin composite film | |
| CN104614421B (en) | A kind of electrochemical method for detecting 2,4,6 trichlorophenol, 2,4,6,-Ts | |
| CN103954612B (en) | Light-catalyzed reaction produces the Real-time and Dynamic Detection system of superoxide radical | |
| CN104865300B (en) | A kind of based on AuTiO2/Bi2S3The preparation method of the Optical Electro-Chemistry sensor of modified electrode and application | |
| Koizumi et al. | Kinetics simulation of luminol chemiluminescence based on quantitative analysis of photons generated in electrochemical oxidation | |
| Begum et al. | Development of an electrochemical sensing system for wine component analysis | |
| Xie et al. | PEDOT films doped with titanyl oxalate as chemiresistive and colorimetric dual-mode sensors for the detection of hydrogen peroxide vapor | |
| CN112345505B (en) | Method for detecting hypochlorite by using tetra (4-aminobiphenyl) ethylene and application | |
| Mondal et al. | Simultaneous Electrochemical Sensing of p‐Aminophenol and Hydroquinone by Using Grafted Tricholoma Mushroom Polysaccharide/Gold Composite Nanoparticles in Aqueous Media | |
| Papadopoulou et al. | Paper sensors based on fluorescence changes of carbon nanodots for optical detection of nanomaterials |
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 |