CN114249391A - Preparation method of activated carbon column loaded nickel phosphate particle electrode - Google Patents
Preparation method of activated carbon column loaded nickel phosphate particle electrode Download PDFInfo
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- CN114249391A CN114249391A CN202111532089.2A CN202111532089A CN114249391A CN 114249391 A CN114249391 A CN 114249391A CN 202111532089 A CN202111532089 A CN 202111532089A CN 114249391 A CN114249391 A CN 114249391A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 168
- 229910000159 nickel phosphate Inorganic materials 0.000 title claims abstract description 47
- JOCJYBPHESYFOK-UHFFFAOYSA-K nickel(3+);phosphate Chemical compound [Ni+3].[O-]P([O-])([O-])=O JOCJYBPHESYFOK-UHFFFAOYSA-K 0.000 title claims abstract description 47
- 239000002245 particle Substances 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 150000002815 nickel Chemical class 0.000 claims abstract description 16
- 239000012266 salt solution Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000003054 catalyst Substances 0.000 claims abstract description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 15
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 15
- 239000001488 sodium phosphate Substances 0.000 claims description 15
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 15
- 238000005406 washing Methods 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 10
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 9
- 229910017604 nitric acid Inorganic materials 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 7
- 230000010355 oscillation Effects 0.000 claims description 7
- 238000007598 dipping method Methods 0.000 claims description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 claims description 4
- 238000005234 chemical deposition Methods 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 4
- 229910001453 nickel ion Inorganic materials 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims description 4
- 230000008021 deposition Effects 0.000 claims description 3
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 claims description 2
- 238000007605 air drying Methods 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 claims description 2
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 claims description 2
- 230000003197 catalytic effect Effects 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 238000004065 wastewater treatment Methods 0.000 abstract description 4
- 238000011068 loading method Methods 0.000 abstract description 2
- 239000000945 filler Substances 0.000 abstract 1
- 230000020477 pH reduction Effects 0.000 abstract 1
- 238000002791 soaking Methods 0.000 description 9
- 239000002351 wastewater Substances 0.000 description 9
- 239000000126 substance Substances 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 238000003411 electrode reaction Methods 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- DPGAAOUOSQHIJH-UHFFFAOYSA-N ruthenium titanium Chemical compound [Ti].[Ru] DPGAAOUOSQHIJH-UHFFFAOYSA-N 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 1
- CQPFMGBJSMSXLP-UHFFFAOYSA-M acid orange 7 Chemical compound [Na+].OC1=CC=C2C=CC=CC2=C1N=NC1=CC=C(S([O-])(=O)=O)C=C1 CQPFMGBJSMSXLP-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000007809 chemical reaction catalyst Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000010411 electrocatalyst Substances 0.000 description 1
- 239000004021 humic acid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 description 1
- 229940012189 methyl orange Drugs 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 1
- 229940043267 rhodamine b Drugs 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F1/46114—Electrodes in particulate form or with conductive and/or non conductive particles between them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46133—Electrodes characterised by the material
- C02F2001/46138—Electrodes comprising a substrate and a coating
- C02F2001/46142—Catalytic coating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
Abstract
The invention relates to the field of wastewater treatment, in particular to a preparation method of an active carbon column loaded nickel phosphate particle electrode. The catalytic particle electrode comprises an activated carbon column and a nickel phosphate catalyst loaded on the activated carbon column. The method comprises the steps of acidification pretreatment of the activated carbon column, preparation of a nickel salt solution, nickel phosphate loading and preparation of a particle electrode. The active carbon column loaded nickel phosphate particle electrode prepared by the invention has the advantages of simple preparation method, good conductivity, high catalytic activity and good stability, can be filled in a three-dimensional electrode reactor as a filler, and can effectively degrade and remove organic matters in water under the conditions of lower current and voltage.
Description
Technical Field
The invention relates to the field of wastewater treatment, in particular to a preparation method of an active carbon column loaded nickel phosphate particle electrode.
Background
The wastewater treatment technology mainly relates to three types, namely a physical method, a chemical method and a biochemical treatment method. Different water treatment technologies have their own advantages and disadvantages, with the use of electrochemical treatment technologies having more significant advantages in this regard. The electrochemical technology for treating the wastewater has the advantages of small equipment volume, high treatment efficiency, no need of secondary treatment, normal temperature and pressure and the like. The three-dimensional electrode reactor is widely applied to wastewater treatment in various fields such as printing and dyeing industry, metallurgy industry, textile industry, pesticide industry, building industry and the like. The three-dimensional electrode reactor is a typical advanced oxidation technology and has the advantages of high reaction efficiency, convenience in operation, low running cost and the like.
The three-dimensional electrode system is characterized in that a particle electrode is added in a two-dimensional electrode system, so that the contact area between a solution and the electrode is increased, the mass transfer distance is shortened, and the mass transfer efficiency is greatly improved. In addition, the particle electrode in the three-dimensional electrode can not only provide adsorption, but also enhance catalytic reaction, thereby being more beneficial to the degradation of pollutants. The conductivity, catalytic activity, particle size, material type, and addition of the particle electrode all affect the performance and processing effect of the three-dimensional electrode system. Therefore, the selection of the proper particle electrode has significant significance for improving the degradation efficiency of the three-dimensional electrode system.
The nickel phosphate has higher electrocatalytic activity, can be used as a water oxidation electrocatalyst and a high-performance oxygen evolution reaction catalyst, and can also be used as an anode catalyst to improve the degradation efficiency of organic matters in wastewater. According to the invention, the particle electrode is prepared by loading nickel phosphate on the surface of the activated carbon column by an impregnation method and a chemical deposition method, and the adsorption performance of the activated carbon column and the catalytic performance of the nickel phosphate are combined, so that the degradation removal rate of pollutants is improved.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to combine the adsorption performance of an activated carbon column and the catalytic performance of nickel phosphate, and provides a preparation method of an activated carbon column loaded nickel phosphate particle electrode.
The technical scheme is as follows: the invention adopts the following technical scheme.
A preparation method of an electrode with nickel phosphate particles loaded on an activated carbon column comprises the steps of taking an acidified and modified activated carbon column as a carrier, fully adsorbing nickel particles in a nickel salt solution, forming a nickel phosphate catalyst layer on the surface of the activated carbon column through simple chemical deposition, and drying to prepare the electrode with the nickel phosphate particles loaded on the activated carbon column; the preparation method specifically comprises the following steps:
(1) acidifying and modifying by an activated carbon column: washing the activated carbon column with water, refluxing in sulfuric acid/nitric acid mixed acid, separating, washing, and air drying;
(2) preparing a nickel salt solution and a sodium phosphate solution: dissolving nickel nitrate or nickel chloride in water, wherein the molar concentration of nickel ions is 0.1-0.9 mol/L, and dissolving sodium phosphate in water, wherein the molar concentration of the sodium phosphate is 0.1-0.6 mol/L;
(3) and (3) adsorbing nickel salt by using an activated carbon column: dipping the activated carbon column in the step (1) in a nickel salt solution (2), oscillating and adsorbing for 1-6 hours, and cleaning and airing after separation;
(4) deposition of nickel phosphate: dipping the activated carbon column in the step (3) in a sodium phosphate solution (2), carrying out oscillation reaction for 10-60 minutes, and cleaning and airing after separation;
(5) preparing a particle electrode: and (4) drying the activated carbon column in the oven, taking out, and cooling to room temperature.
In the step (1), the diameter of the activated carbon column is 2-6 mm, the length of the activated carbon column is 3-10 mm, the ratio of sulfuric acid to nitric acid mixed acid is 1: 1-1: 4, and the reflux time is 30-180 minutes.
In the step (2), the molar concentration of the nickel ions is 0.1-0.9 mol/L, and the molar concentration of the sodium phosphate is 0.1-0.6 mol/L.
And (4) adsorbing the nickel salt by the activated carbon column in the step (3) for 1-6 hours.
The time for depositing the nickel phosphate in the step (4) is 10-60 minutes.
And (5) drying the activated carbon column in the oven at the temperature of 100-120 ℃ for 12-48 hours.
When the activated carbon column loaded nickel phosphate particle electrode prepared by the method is applied to degrading and removing organic substances in water, the particle electrode is filled between a positive electrode plate and a negative electrode plate to form a three-dimensional electrode reaction system for use; the anodes of the two electrode plates are ruthenium-titanium (RuO) electrodes2and/Ti), and the cathode is a stainless steel mesh electrode.
The preparation method of the electrode of the activated carbon column loaded with the nickel phosphate particles has the following advantages:
(1) the preparation method of the electrode with the activated carbon column loaded with the nickel phosphate particles is simple to operate, and the electrode with the activated carbon column loaded with the nickel phosphate particles is prepared by adopting an excess impregnation method and a one-step chemical deposition method;
(2) the prepared activated carbon column loaded nickel phosphate particle electrode is applied to a three-dimensional electrode treatment system, organic matters in wastewater can be efficiently degraded and removed based on the high electrocatalytic activity of nickel phosphate, the removal rate is greatly improved, and the removal rate of Chemical Oxygen Demand (COD) can reach more than 90%;
(3) the prepared active carbon column loaded nickel phosphate particle electrode has good conductivity and low current voltage, and when the prepared active carbon column loaded nickel phosphate particle electrode is used for treating wastewater containing organic pollutants, the electrocatalytic reaction can operate under the condition of lower current and voltage due to the high electrocatalytic activity of nickel phosphate, so that the energy consumption is low.
In conclusion, the preparation method of the electrode with the activated carbon column loaded with the nickel phosphate particles has the advantages of simplicity in operation, low energy consumption, good conductivity, high catalytic activity and good stability, and can efficiently degrade and remove organic matters in water under the conditions of lower current and lower voltage.
Detailed Description
The invention is further illustrated by the following specific examples.
Example 1
The washed activated carbon column (diameter: 3 mm, length: 5 mm) was refluxed in a mixed acid of sulfuric acid/nitric acid (1: 2) for 60 minutes. Taking out the activated carbon column, washing with water, soaking the activated carbon column in a nickel salt solution, oscillating, adsorbing for 2 hours, separating, washing and drying in the air; soaking the activated carbon column in a sodium phosphate solution, carrying out oscillation reaction for 20 minutes, and cleaning and airing after separation; drying the activated carbon column in an oven at 100 ℃ for 36 hours, taking out, and cooling to room temperature.
The obtained activated carbon column loaded nickel phosphate particle electrode is applied to a three-dimensional electrode reactor, a stainless steel mesh electrode and a ruthenium-titanium electrode are respectively used as a cathode and an anode, the activated carbon column loaded nickel phosphate particle electrode is filled between the cathode and the anode to form a three-dimensional electrode reaction system, simulated rhodamine B wastewater is treated, the treatment is carried out under the conditions that the water inlet COD is 100 mg/l and the current is 0.2A, the water outlet is stable after 20 min, and the removal rate of the COD reaches 90.3%.
Example 2
The washed activated carbon column (diameter: 3 mm, length: 8 mm) was refluxed in a mixed acid of sulfuric acid/nitric acid (1: 3) for 90 minutes. Taking out the activated carbon column, washing with water, soaking the activated carbon column in a nickel salt solution, oscillating, adsorbing for 4 hours, separating, washing and drying in the air; soaking the activated carbon column in a sodium phosphate solution, carrying out oscillation reaction for 50 minutes, and cleaning and airing after separation; drying the activated carbon column in an oven at the temperature of 110 ℃ for 12 hours, taking out, and cooling to room temperature.
The obtained activated carbon column loaded nickel phosphate particle electrode is applied to a three-dimensional electrode reactor, a stainless steel mesh electrode and a ruthenium-titanium electrode are respectively used as a cathode and an anode, the activated carbon column loaded nickel phosphate particle electrode is filled between the cathode and the anode to form a three-dimensional electrode reaction system, simulated methyl orange wastewater is treated, the treatment is carried out under the conditions of inflow COD (chemical oxygen demand) of 150 mg/l and current of 0.2A, the effluent is stable after 20 min, and the removal rate of COD is 96.1%.
Example 3
The washed activated carbon column (diameter 5 mm, length 10 mm) was refluxed in a mixed acid of sulfuric acid/nitric acid (1: 3) for 120 minutes. Taking out the activated carbon column, washing with water, soaking the activated carbon column in a nickel salt solution, oscillating, adsorbing for 3 hours, separating, washing and drying in the air; soaking the activated carbon column in a sodium phosphate solution, carrying out oscillation reaction for 20 minutes, and cleaning and airing after separation; drying the activated carbon column in an oven at the temperature of 110 ℃ for 24 hours, taking out, and cooling to room temperature.
The obtained activated carbon column loaded nickel phosphate particle electrode is applied to a three-dimensional electrode reactor, a stainless steel mesh electrode and a ruthenium-titanium electrode are respectively used as a cathode and an anode, the activated carbon column loaded nickel phosphate particle electrode is filled between the cathode and the anode to form a three-dimensional electrode reaction system, simulated acid orange wastewater is treated, the treatment is carried out under the conditions of water inlet COD (chemical oxygen demand) of 120 mg/l and current of 0.1A, the effluent is stable after 20 min, and the removal rate of COD is 92.4%.
Example 4
The washed activated carbon column (diameter: 3 mm, length: 10 mm) was refluxed in a mixed acid of sulfuric acid/nitric acid (1: 3) for 120 minutes. Taking out the activated carbon column, washing with water, soaking the activated carbon column in a nickel salt solution, oscillating, adsorbing for 5 hours, separating, washing and drying in the air; dipping the activated carbon column in a sodium phosphate solution, carrying out oscillation reaction for 40 minutes, and cleaning and airing after separation; drying the activated carbon column in an oven at 105 ℃ for 36 hours, taking out, and cooling to room temperature.
The obtained activated carbon column loaded nickel phosphate particle electrode is applied to a three-dimensional electrode reactor, a stainless steel mesh electrode and a ruthenium-titanium electrode are respectively used as a cathode and an anode, the activated carbon column loaded nickel phosphate particle electrode is filled between the cathode and the anode to form a three-dimensional electrode reaction system, simulated humic acid wastewater is treated, the treatment is carried out under the conditions that the water inlet COD (chemical oxygen demand) is 300 mg/l and the current is 0.3A, the water outlet is stable after 20 min, and the removal rate of the COD reaches 94.9%.
Example 5
The washed activated carbon column (diameter 5 mm, length 5 mm) was refluxed in a mixed acid of sulfuric acid/nitric acid (1: 4) for 150 minutes. Taking out the activated carbon column, washing with water, soaking the activated carbon column in a nickel salt solution, oscillating, adsorbing for 3 hours, separating, washing and drying in the air; soaking the activated carbon column in a sodium phosphate solution, carrying out oscillation reaction for 30 minutes, and cleaning and airing after separation; drying the activated carbon column in an oven at 100 ℃ for 36 hours, taking out, and cooling to room temperature.
The obtained activated carbon column loaded nickel phosphate particle electrode is applied to a three-dimensional electrode reactor, a stainless steel mesh electrode and a ruthenium-titanium electrode are respectively used as a cathode and an anode, the activated carbon column loaded nickel phosphate particle electrode is filled between the cathode and the anode to form a three-dimensional electrode reaction system, the simulated coking wastewater is treated under the conditions of inflow COD (chemical oxygen demand) of 350 mg/l and current of 0.2A, the effluent is stable after 20 min, and the removal rate of the COD reaches 93.1%.
Claims (5)
1. A preparation method of an electrode with nickel phosphate particles loaded on an activated carbon column is characterized in that the preparation method of the electrode with nickel phosphate particles loaded on the activated carbon column is to take an activated carbon column which is acidized and modified as a carrier, fully adsorb nickel particles in a nickel salt solution, form a nickel phosphate catalyst layer on the surface of the activated carbon column through simple chemical deposition, and prepare the particle electrode with nickel phosphate loaded on the activated carbon column through drying; the preparation method comprises the following steps:
(1) acidifying and modifying by an activated carbon column: washing the activated carbon column with water, refluxing in sulfuric acid/nitric acid mixed acid, separating, washing, and air drying;
(2) preparing a nickel salt solution and a sodium phosphate solution: dissolving nickel nitrate or nickel chloride in water, wherein the molar concentration of nickel ions is 0.1-0.9 mol/L, and dissolving sodium phosphate in water, wherein the molar concentration of the sodium phosphate is 0.1-0.6 mol/L;
(3) and (3) adsorbing nickel salt by using an activated carbon column: dipping the activated carbon column in the step (1) in a nickel salt solution (2), oscillating and adsorbing for 1-6 hours, and cleaning and airing after separation;
(4) deposition of nickel phosphate: dipping the activated carbon column in the step (3) in a sodium phosphate solution (2), carrying out oscillation reaction for 10-60 minutes, and cleaning and airing after separation;
(5) preparing a particle electrode: and (4) drying the activated carbon column in the oven, taking out, and cooling to room temperature.
2. The preparation method of the electrode with the nickel phosphate particles loaded on the activated carbon column according to claim 1, wherein in the step (1), the diameter of the activated carbon column is 2-6 mm, the length of the activated carbon column is 3-10 mm, the ratio of sulfuric acid to nitric acid mixed acid is 1: 1-1: 4, and the reflux time is 30-180 minutes.
3. The method for preparing the electrode with the nickel phosphate particles loaded on the activated carbon column according to claim 1, wherein the molar concentration of the nickel ions in the step (2) is 0.1-0.9 mol/L, and the molar concentration of the sodium phosphate is 0.1-0.6 mol/L.
4. The method for preparing the electrode with the nickel phosphate particles loaded on the activated carbon column according to claim 1, wherein the time for the activated carbon column to adsorb the nickel salt in the step (3) is 1-6 hours.
5. The method for preparing the electrode with the nickel phosphate particles loaded on the activated carbon column according to claim 1, wherein the deposition time of the nickel phosphate in the step (4) is 10-60 minutes.
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| CN202111532089.2A CN114249391A (en) | 2021-12-15 | 2021-12-15 | Preparation method of activated carbon column loaded nickel phosphate particle electrode |
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| CN112239200A (en) * | 2020-10-23 | 2021-01-19 | 兰州交通大学 | Preparation of amorphous phosphate material and application of amorphous phosphate material as electrode material of super capacitor |
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| CN113716655A (en) * | 2021-09-10 | 2021-11-30 | 吉林建筑大学 | Ferronickel bimetal three-dimensional electrode particle filler and preparation method and application thereof |
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2021
- 2021-12-15 CN CN202111532089.2A patent/CN114249391A/en active Pending
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