CN102002847A - Electrochemical CF (Carbon Fiber) surface modification method - Google Patents
Electrochemical CF (Carbon Fiber) surface modification method Download PDFInfo
- Publication number
- CN102002847A CN102002847A CN 201010542478 CN201010542478A CN102002847A CN 102002847 A CN102002847 A CN 102002847A CN 201010542478 CN201010542478 CN 201010542478 CN 201010542478 A CN201010542478 A CN 201010542478A CN 102002847 A CN102002847 A CN 102002847A
- Authority
- CN
- China
- Prior art keywords
- described method
- acid
- ammonium
- electrochemical
- electrode
- 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.)
- Pending
Links
Images
Abstract
The invention belongs to the fieldss of electrochemistry and fiber materials. In the invention, anodic oxidation treatment or surface electropolymerization treatment are carried out on CF by adopting a chronoamperometry method in an external electric field under an external voltage of 0.5-6 V at a reaction temperature of 20-35 DEG C for a reaction time of 5-150 s. In case of the anodic oxidation treatment, acid, alkali or ammonium salt is adopted as an electrolyte which has the concentration ranging from 0.1-5mol/L. In case of the surface electropolymerization treatment, maleic anhydride is adopted as an elemental solution which has the concentration of 0.1-2mol / L. In the invention, by modifying the CF surface through anodic oxidation or surface electropolymerization, the surface oxygen content and the roughness of the CF surface are improved so that the hydrophilicity and the microbial affinity of the CF surface are improved and the applications of the CF as a biofilm carrier to the sewage treatment field by using a biofilm method are facilitated.
Description
Technical field
The invention belongs to electrochemistry and fibrous material field, be specifically related to a kind of method that is used for charcoal fiber (CF) surface modification, be used to improve the bioaffinity of CF.
Background technology
As functional material, CF is widely used as the reinforcing material in the polymer matrix composites, and improves the adhesive strength of itself and resin matrix by process of surface treatment.Except the engineering material Application for Field; CF also is widely used at field of environment protection; improve (Xiao Yuezhu such as its ability that removes sulfur dioxide, Xiao Yuezhu by modification as people such as Liu Lang (CN1250116A) to activated carbon fiber; Wang Qingen. activated carbon fiber is handled the research [J] of high concentrated organic wastewater. environmental science and technology; 1989,9 (5): 46-48) utilize activated carbon fiber to handle organic wastewater etc.
At sewage treatment area, the preparation of biofilm carrier material and optimization are the key technologies in the biomembrance process sewage disposal.At present, domestic biofilm carrier material mainly can be divided into classifications such as hard packing, semi-soft packing and soft-filler, and wherein soft and material semi soft packing mainly is macromolecular materials such as polypropylene, polyethylene, but its anchor effect to microorganism is not good.Because CF excellent biological compatibility, can make a large amount of microorganisms be anchored to its surface (Ojima Zhao fast, the assistant rattan is sincere. and the charcoal element is knitted the thing compatibility The of supporting one's family and is applied flexibly the new レ い of レ water environment and save technology [J] from damage. material science, 1998,35 (6): 25-32), compared than remarkable advantages with the traditional biological membrane carrier materials.
Biomembrane is the key factor of decision biomembrance process wastewater treatment efficiency in the fixed amount and the set intensity of carrier surface, and microorganism is anchored to carrier surface is biological film formed basis, and the material surface characteristic is (as surface energy, chemical composition, hydrophily, elecrtonegativity and roughness etc.) bacterium or cell there are influence (Jin Ho Lee significantly in its surperficial adhesion property, Sang Jin Lee, Gilson Khang, et al..The Effect of Fluid Shear Stress on Endothelial Cell Adhesiveness to Polymer Surfaces with Wettability Gradient[J] .Journal of Colloid and Interface Science, 2000,230 (1): 84-90).
Not surface treated CF surface is comparatively smooth, and the surface-activity carbon atom is less.If can select the method for suitable surface modification to optimize the CF surface state, then can improve the set ability of CF, thereby further improve wastewater treatment efficiency to microorganism in the water.So seek suitable surface modifying method is the subject matter of optimizing the CF carrier.
Summary of the invention
The purpose of this invention is to provide a kind of appropriate C F surface modifying method, thereby further improve the microorganism fixation performance of CF.
Surface modifying method provided by the present invention may further comprise the steps: adopt chronoamperometry that CF is carried out anodized or surface electrical aggregation processing, applied voltage 0.5-6V, reaction temperature 20-35 ℃, reaction time 5-150s; If anodized, electrolyte are acid, alkali or ammonium salt, the concentration of electrolyte scope is 0.1-5mol/L; If electropolymerization is handled, simple substance solution is maleic anhydride, simple substance solution concentration 0.1-2mol/L.
Wherein, be anode with CF in the described electrochemical reaction, graphite is negative electrode, and platinum electrode is an auxiliary electrode, and saturated calomel electrode is a reference electrode; Described acid is nitric acid, sulfuric acid, phosphoric acid or acetate; Described alkali is NaOH or potassium hydroxide; Described ammonium salt is ammonium sulfate, ammonium phosphate, diammonium hydrogen phosphate, ammonium dihydrogen phosphate (ADP), ammonium carbonate or carbonic hydroammonium.Apparatus for electrochemical treatment as shown in Figure 1.
The present invention introduces oxygen-containing functional group by carrying out electrochemical reaction on the CF surface on the surface, thereby further improves the microorganism fixation performance of CF.This invention is the good method of modifying that improves CF carrier biofilm fixed amount, at the biomembrance process sewage treatment area bigger development prospect is arranged.
Description of drawings
Fig. 1 is the apparatus for electrochemical treatment schematic diagram: 1, reference electrode; 2, charcoal fiber (anode); 3, auxiliary electrode; 4, electrolyte or simple substance solution; 5, constant temperature water tank; 6, electrochemical workstation.
Fig. 2 is ESEM (SEM) figure of CF after the anodized: because oxidation makes lipid starching cortex in CF surface come off, and the oxidized etching of fiber surface, roughness obviously improves.
Fig. 3 is ESEM (SEM) figure of CF after the surface electrical aggregation processing: maleic anhydride polymerization and wrapping up to carbon fiber surface, roughness increases.
Fig. 4 is ESEM (SEM) figure of not surface treated CF: the surface is more smooth, and slight groove is arranged.
The specific embodiment
All adopt ESEM (SEM) to characterize the CF surface topography among the following embodiment; Characterize CF surface oxygen functional group content with x-ray photoelectron power spectrum (XPS); With equilibrium moisture content (Cen Zhenzhang wears gloss, Dong Lixin etc. surface treatment is to the influence of charcoal fiber carrier surface forming biofilm property research [J]. Chongqing Polytechnic College journal (natural science edition), 2007,21 (5): 18-20) characterize the CF hydrophily; With the biomembrane fixed amount of CF (Liu Cunping wears gloss, Cen Zhenzhang etc. the anodic oxidation of charcoal fiber is to the influence [J] of activated sludge fixation performance. developing material and application, 2007,22 (5): 32-35) characterize the microorganism fixation performance of CF carrier.
Embodiment 1
At room temperature (PAN-CF T300) removes surperficial sizing agent, with drying behind the distilled water flushing with high strong type PAN based carbon fiber; Be anode again with CF, graphite is negative electrode, and platinum electrode is an auxiliary electrode, and saturated calomel electrode is a reference electrode, adopts chronoamperometry that CF is carried out anodized.Salpeter solution with 0.1-1mol/L is an electrolyte, applied voltage 0.5-1.5V, reaction temperature 20-27 ℃, reaction time 120-150s.The surface treatment result is as follows: the surface oxygen functional group total amount is 40.84%, and equilibrium moisture content is 5.88%, and the biomembrane fixed amount is 135%.Its SEM photo as shown in Figure 2.
Embodiment 2
At room temperature (PAN-CF T300) removes surperficial sizing agent, with drying behind the distilled water flushing with high strong type PAN based carbon fiber; Be anode again with CF, graphite is negative electrode, and platinum electrode is an auxiliary electrode, and saturated calomel electrode is a reference electrode, adopts chronoamperometry that CF is carried out the surface electrical aggregation processing.Maleic anhydride with 0.1-0.5mol/L is a simple substance solution, applied voltage 1-2V, reaction temperature 25-30 ℃, reaction time 100-130s.The surface treatment result is as follows: the surface oxygen functional group total amount is 36.82%, and equilibrium moisture content is 5.69%, and the biomembrane fixed amount is 212%.Its SEM photo as shown in Figure 3.
Comparative Examples
At room temperature (PAN-CF T300) removes surperficial sizing agent, with drying behind the distilled water flushing with high strong type PAN based carbon fiber.Test result is as follows: the surface oxygen functional group total amount is 30%, and equilibrium moisture content is 3.48%, and the biomembrane fixed amount is 55%.Its SEM photo as shown in Figure 4.
Claims (7)
1. the electrochemical surface method of modifying of a charcoal fiber (CF) is characterized in that, adopts chronoamperometry that CF is carried out anodized or surface electrical aggregation processing, applied voltage 0.5-6V, reaction temperature 20-35 ℃, reaction time 5-150s.
2. according to the described method of claim 1, it is characterized in that, is anode with CF in the described electrochemical reaction, and graphite is negative electrode, and platinum electrode is an auxiliary electrode, and saturated calomel electrode is a reference electrode.
3. according to the described method of claim 1, it is characterized in that if described electrochemical modification anodized, electrolyte is acid, alkali or ammonium salt, the concentration of electrolyte scope is 0.1-5mol/L;
4. according to the described method of claim 3, it is characterized in that described acid is nitric acid, sulfuric acid, phosphoric acid or acetate.
5. according to the described method of claim 3, it is characterized in that described alkali is NaOH or potassium hydroxide.
6. according to the described method of claim 3, it is characterized in that described ammonium salt is ammonium sulfate, ammonium phosphate, diammonium hydrogen phosphate, ammonium dihydrogen phosphate (ADP), ammonium carbonate or carbonic hydroammonium.
7. according to the described method of claim 1, it is characterized in that if described electrochemical modification electropolymerization is handled, simple substance solution is maleic anhydride, simple substance solution concentration 0.1-2mol/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010542478 CN102002847A (en) | 2010-11-15 | 2010-11-15 | Electrochemical CF (Carbon Fiber) surface modification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010542478 CN102002847A (en) | 2010-11-15 | 2010-11-15 | Electrochemical CF (Carbon Fiber) surface modification method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102002847A true CN102002847A (en) | 2011-04-06 |
Family
ID=43810535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010542478 Pending CN102002847A (en) | 2010-11-15 | 2010-11-15 | Electrochemical CF (Carbon Fiber) surface modification method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102002847A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505449A (en) * | 2011-11-05 | 2012-06-20 | 中国科学院山西煤炭化学研究所 | Electrochemical modification treatment method of carbon fiber surface |
| CN103243544A (en) * | 2013-05-07 | 2013-08-14 | 中国科学院山西煤炭化学研究所 | Method for modifying carbon fiber surface |
| CN103541212A (en) * | 2012-07-13 | 2014-01-29 | 金发科技股份有限公司 | Method and equipment for carbon fiber surface modification, carbon fiber and composite material of carbon fiber and application of composite material |
| CN104178790A (en) * | 2014-08-19 | 2014-12-03 | 中复神鹰碳纤维有限责任公司 | Carbon fiber surface treatment method and treatment device |
| CN104532548A (en) * | 2015-01-29 | 2015-04-22 | 中国兵器工业集团第五三研究所 | In-situ growth method for carbon nano tubes (CNTs) on carbon fiber surface |
| CN104928805A (en) * | 2015-06-02 | 2015-09-23 | 中复神鹰碳纤维有限责任公司 | High-interfacial-performance carbon fiber with smooth surface and preparation process of high-interfacial-performance carbon fiber |
| CN110010875A (en) * | 2019-04-11 | 2019-07-12 | 陕西科技大学 | A kind of preparation method of flake cobalt sulfide composite and flexible carbon cloth electrode material |
| CN110171874A (en) * | 2019-07-10 | 2019-08-27 | 大连海洋大学 | A kind of electrode film biofilter for breeding seawater |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660185A (en) * | 2009-09-25 | 2010-03-03 | 北京化工大学 | Method of strong effect carbon fiber anodic oxidation surface treatment |
| CN101787645A (en) * | 2010-03-02 | 2010-07-28 | 东华大学 | Carbon fiber surface electropolymerization treatment method |
-
2010
- 2010-11-15 CN CN 201010542478 patent/CN102002847A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660185A (en) * | 2009-09-25 | 2010-03-03 | 北京化工大学 | Method of strong effect carbon fiber anodic oxidation surface treatment |
| CN101787645A (en) * | 2010-03-02 | 2010-07-28 | 东华大学 | Carbon fiber surface electropolymerization treatment method |
Non-Patent Citations (2)
| Title |
|---|
| 《材料开发与应用》 20071015 刘存平等 炭纤维阳极氧化对活性污泥固着性能的影响 第32页表1 1-7 第22卷, 第05期 2 * |
| 《重庆工学院学报(自然科学版)》 20070515 岑贞章等 表面处理对炭纤维挂膜性能的影响研究 第19页第1栏至第2栏第3段 1-7 第22卷, 第05期 2 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505449A (en) * | 2011-11-05 | 2012-06-20 | 中国科学院山西煤炭化学研究所 | Electrochemical modification treatment method of carbon fiber surface |
| CN103541212A (en) * | 2012-07-13 | 2014-01-29 | 金发科技股份有限公司 | Method and equipment for carbon fiber surface modification, carbon fiber and composite material of carbon fiber and application of composite material |
| CN103541212B (en) * | 2012-07-13 | 2016-05-18 | 广州金发碳纤维新材料发展有限公司 | Carbon fiber surface modification method and equipment, carbon fiber and composite thereof and application |
| CN103243544A (en) * | 2013-05-07 | 2013-08-14 | 中国科学院山西煤炭化学研究所 | Method for modifying carbon fiber surface |
| CN103243544B (en) * | 2013-05-07 | 2015-09-02 | 中国科学院山西煤炭化学研究所 | A kind of method of modifying of carbon fiber surface |
| CN104178790A (en) * | 2014-08-19 | 2014-12-03 | 中复神鹰碳纤维有限责任公司 | Carbon fiber surface treatment method and treatment device |
| CN104532548A (en) * | 2015-01-29 | 2015-04-22 | 中国兵器工业集团第五三研究所 | In-situ growth method for carbon nano tubes (CNTs) on carbon fiber surface |
| CN104928805A (en) * | 2015-06-02 | 2015-09-23 | 中复神鹰碳纤维有限责任公司 | High-interfacial-performance carbon fiber with smooth surface and preparation process of high-interfacial-performance carbon fiber |
| CN110010875A (en) * | 2019-04-11 | 2019-07-12 | 陕西科技大学 | A kind of preparation method of flake cobalt sulfide composite and flexible carbon cloth electrode material |
| CN110171874A (en) * | 2019-07-10 | 2019-08-27 | 大连海洋大学 | A kind of electrode film biofilter for breeding seawater |
| CN110171874B (en) * | 2019-07-10 | 2021-10-08 | 大连海洋大学 | Electrode membrane biological filter for breeding seawater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102002847A (en) | Electrochemical CF (Carbon Fiber) surface modification method | |
| Mohan et al. | Bioelectricity production by mediatorless microbial fuel cell under acidophilic condition using wastewater as substrate: Influence of substrate loading rate | |
| Wu et al. | Anode modification by biogenic gold nanoparticles for the improved performance of microbial fuel cells and microbial community shift | |
| Jatoi et al. | Advanced microbial fuel cell for waste water treatment—a review | |
| Batlle-Vilanova et al. | Deciphering the electron transfer mechanisms for biogas upgrading to biomethane within a mixed culture biocathode | |
| Lee et al. | Significance of biological hydrogen oxidation in a continuous single-chamber microbial electrolysis cell | |
| Picot et al. | Graphite anode surface modification with controlled reduction of specific aryl diazonium salts for improved microbial fuel cells power output | |
| Tursun et al. | Carbon material optimized biocathode for improving microbial fuel cell performance | |
| Kipf et al. | Systematic screening of carbon-based anode materials for microbial fuel cells with Shewanella oneidensis MR-1 | |
| Zhuang et al. | Methanogenesis control using 2-bromoethanesulfonate for enhanced power recovery from sewage sludge in air-cathode microbial fuel cells | |
| Wang et al. | Microbial fuel cells: enhancement with a polyaniline/carbon felt capacitive bioanode and reduction of Cr (VI) using the intermittent operation | |
| Kang et al. | Facile reconstruction of microbial fuel cell (MFC) anode with enhanced exoelectrogens selection for intensified electricity generation | |
| Tran et al. | Electricity production characterization of a Sediment Microbial Fuel Cell using different thermo-treated flat carbon cloth electrodes | |
| Tian et al. | Low-temperature anaerobic digestion enhanced by bioelectrochemical systems equipped with graphene/PPy-and MnO2 nanoparticles/PPy-modified electrodes | |
| Zheng et al. | Using mixed sludge-derived short-chain fatty acids enhances power generation of microbial fuel cells | |
| CN103413948B (en) | A kind of microorganism electrolysis cell modification biological cathode preparation method and application thereof | |
| Cercado-Quezada et al. | Treatment of dairy wastes with a microbial anode formed from garden compost | |
| Lu et al. | Neglected effects of inoculum preservation on the start-up of psychrophilic bioelectrochemical systems and shaping bacterial communities at low temperature | |
| Feng et al. | Carbonized cow dung as a high performance and low cost anode material for bioelectrochemical systems | |
| Xing et al. | MXene@ Poly (diallyldimethylammonium chloride) decorated carbon cloth for highly electrochemically active biofilms in microbial fuel cells | |
| CN105845959A (en) | Microbial fuel cell for sewage water degradation | |
| Wang et al. | Enhanced power generation of oxygen-reducing biocathode with an alternating hydrophobic and hydrophilic surface | |
| CN106410213A (en) | Electrochemical assembly polypyrrole/manganese dioxide compound modified electrode and preparation method and application thereof | |
| CN110620243A (en) | Preparation method of functionalized graphene oxide-carbon felt composite material | |
| CN105304923A (en) | Method for increasing energy utilization rate of phenol-degradable microbial fuel cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20110406 |