CN108946705B - Method for modifying surface of carbon nano tube by using micromolecular chloralkane and application thereof - Google Patents

Method for modifying surface of carbon nano tube by using micromolecular chloralkane and application thereof Download PDF

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CN108946705B
CN108946705B CN201810944195.3A CN201810944195A CN108946705B CN 108946705 B CN108946705 B CN 108946705B CN 201810944195 A CN201810944195 A CN 201810944195A CN 108946705 B CN108946705 B CN 108946705B
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carbon nano
nano tube
dispersion liquid
chloralkane
stirring
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CN108946705A (en
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邱介山
姚秀超
于畅
倪林
魏千兵
黄红菱
谭新义
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Dalian University of Technology
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/44—Palladium
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/04—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of inorganic compounds, e.g. ammonia
    • C01B3/042—Decomposition of water
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/15—Nano-sized carbon materials
    • C01B32/158—Carbon nanotubes
    • C01B32/168—After-treatment
    • C01B32/174—Derivatisation; Solubilisation; Dispersion in solvents
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/40—Carbon monoxide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/10—Catalysts for performing the hydrogen forming reactions
    • C01B2203/1041—Composition of the catalyst
    • C01B2203/1047—Group VIII metal catalysts
    • C01B2203/1064—Platinum group metal catalysts
    • C01B2203/107—Platinum catalysts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Abstract

The invention belongs to the technical field of carbon material preparation, and relates to a method for modifying the surface of a carbon nano tube by micromolecular chloralkane and application thereof, wherein the method comprises the following steps: (1) preparing a dispersion liquid A, (2) preparing a dispersion liquid B, (3) adding carbon nano tubes into the dispersion liquid B prepared in the step 2, uniformly stirring, placing the mixture into a flask, refluxing, stirring and heating, and (4) carrying out suction filtration on the reaction liquid obtained in the step 3 by using a sand core funnel, leaching by using ethanol, and drying to obtain the surface modified carbon nano tubes. The method has the characteristics of less energy consumption, low cost, good repeatability, easiness in large-scale preparation and the like, and the surface modified carbon nanotube prepared by the method has the advantages of high dispersibility, good compatibility, excellent wettability, a large number of active sites and the like.

Description

Method for modifying surface of carbon nano tube by using micromolecular chloralkane and application thereof
Technical Field
The invention relates to a method for modifying the surface of a carbon nano tube by using micromolecular chloralkane and application thereof, belonging to the technical field of carbon material preparation.
Background
Carbon Nanotubes (CNTs) are hollow seamless tubular nanostructured materials that are rolled from single or multiple graphene sheets. The carbon nano tube has the characteristics of excellent optics, field emission, strong acid and alkali resistance, high temperature oxidation resistance and the like. Carbon nanotubes can be used in a variety of applications, for example: carbon nanotubes are used as a reinforcing phase to improve the mechanical and electrical properties of the composite material, carbon nanotubes are used as a catalyst or a catalyst carrier to improve the catalytic properties, and carbon nanotubes are used as electrode materials of secondary batteries and capacitors. However, the carbon nanotubes have poor compatibility with other substances and are not easy to disperse, and the application of the carbon nanotubes in various fields is seriously influenced. The carbon nano tube is subjected to effective surface modification, so that the dispersion performance of the carbon nano tube can be improved, and the interface bonding property between the carbon nano tube and a matrix material is improved. Endows the carbon nano tube with new excellent performance to realize the molecular assembly of the carbon nano tube and obtain nano materials with various excellent performances, and has wide application prospect in the material field, the chemical field and the energy field.
The surface modification method commonly used for carbon nanotubes includes mechanical grinding, high-energy ball milling, ultrasonic treatment, acid treatment, coupling agent coating, chemical plating, high-energy ray irradiation, atom transfer radical polymerization, and the like. Wherein, the mechanical grinding method, the ball grinding method and the ultrasonic treatment method belong to physical modification. The mechanical grinding method forms lattice defects or lattice distortion on the surface of the carbon nano tube, so that high-activity free radicals are obtained, the carbon nano tube is easy to react with other materials, but the lattice defects are not easy to control in the grinding process, and the length of the carbon nano tube is too short while the lattice defects are formed, so that the performance of the original carbon nano tube is lost. The high-energy ball milling method is to make hard balls strongly impact, grind and stir the carbon nano tubes by the rotation or vibration of a ball mill, and finally to form lattice defects on the surfaces of the carbon nano tubes to obtain modification. The disadvantage is that impurities of hard ball components are easily mixed in the sample and are difficult to separate. The ultrasonic oscillation method utilizes the high-frequency sound wave of ultrasonic waves to generate oscillation so as to disperse the carbon nano tube in a medium, and the method has simple process and easy control. However, this method produces unnecessary impurities which are difficult to remove and adhere to the carrier during the preparation process, and requires a specially-made ultrasonic generator, which is not suitable for mass production, and may limit the practical application thereof.
The chemical modification methods include acid treatment, coupling agent coating, chemical plating, high-energy ray irradiation and atom transfer radical polymerization. The acid treatment method utilizes the characteristic that the end head and the bent part of the carbon nano tube are easy to be oxidized and broken and are converted into carboxyl and hydroxyl, adopts concentrated acid or dilute acid treatment to open the two ends or the bent part, introduces functional groups such as hydroxyl, carboxyl and the like, further increases the affinity between the carbon nano tube and a solute and improves the dispersibility of the carbon nano tube in the solute. However, the use of a large amount of acid causes the method to have high cost and large pollution, and is not in accordance with the development concept of green chemical industry. The coupling agent method adopts a molecule with a molecular structure similar to that of the carbon nano tube at one end and similar to the material to be combined at the other end as the coupling agent, so as to realize the molecular combination/bridging of the carbon nano tube and the material to be combined. The modification method can not damage the structure of the carbon nano tube, thereby obtaining the modified carbon nano tube with complete structure. However, the addition of the coupling agent causes the material composition to be complicated, and has a great influence on subsequent applications. The chemical plating method is a method for preparing a continuous compact coating layer on the surface of a material, which is researched and applied in a large amount in recent years, and has the characteristics of convenience in operation, simple process, uniform plating layer, small porosity, good appearance and the like. However, the plating causes a reduction in the specific surface area of the material. The high-energy ray irradiation method refers to high-energy rays such as ion beams, electron beams, gamma rays and the like, when the high-energy rays irradiate the carbon nano tubes, the carbon nano tubes are bombarded, carbon atoms stay at the gap positions of crystal lattices to generate gap atoms, and a vacancy is left at the original equilibrium position of the carbon atoms. The method has high energy consumption, requires a special irradiation generating device, is not suitable for large-scale production, and limits the practical application of the method. The atom transfer radical polymerization method is a living polymerization technique which is rapidly developed in recent years and has important application value. It is originated from atom transfer free radical addition reaction in organic chemistry, and the polymer molecular chain can be connected to the surface of the carbon nano tube by utilizing the technology, thereby obtaining the carbon nano tube with certain functional characteristics. However, the introduction of polymers can degrade their electrical properties, limiting their applications.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a method for modifying the surface of a carbon nano tube by using small-molecule chloralkane and application thereof. The method has the characteristics of less energy consumption, low cost, good repeatability, easiness in large-scale preparation and the like, and the surface modified carbon nanotube prepared by the method has the advantages of high dispersibility, good compatibility, excellent wettability, a large number of active sites and the like.
In order to achieve the above purpose and solve the problems existing in the prior art, the invention adopts the technical scheme that: a method for modifying the surface of a carbon nano tube by micromolecular chloralkane comprises the following steps:
step 1, preparing a dispersion liquid A, taking 0.1-1.0ml of chloralkane by using a liquid-transferring gun, dispersing the chloralkane into 10-100ml of toluene, and stirring for 1-5min to obtain the dispersion liquid A; the chloralkane is selected from one of dichloromethane, 1, 2-dichloroethane, 1, 2-dichloropropane, 1, 3-dichloropropane, 1, 2-dichlorobutane, 1, 3-dichlorobutane or 1, 4-dichlorobutane;
step 2, preparing a dispersion liquid B, namely adding the dispersion liquid A prepared in the step 1 into 10-100ml of deionized water, and uniformly dispersing to obtain a dispersion liquid B;
step 3, adding 0.1-1.0g of carbon nano tube into the dispersion liquid B prepared in the step 2, stirring for 1-10min, placing the uniformly stirred mixed liquid into a flask, refluxing, stirring and heating for 75-85 ℃, and keeping for 60-120 min;
and 4, carrying out suction filtration on the reaction liquid obtained in the step 3 by adopting a sand core funnel, leaching by using ethanol, and drying to obtain the surface modified carbon nano tube.
The surface-modified carbon nano tube prepared by the method is used as a catalyst carrier to load a palladium catalyst in the selective oxidation reaction of benzyl alcohol, in the electrochemical reduction reaction of carbon dioxide and in the application of a platinum catalyst in hydrogen production by water electrolysis.
The invention has the beneficial effects that: a method for modifying the surface of a carbon nano tube by micromolecular chloralkane comprises the following steps: (1) preparing a dispersion liquid A, (2) preparing a dispersion liquid B, (3) adding carbon nano tubes into the dispersion liquid B prepared in the step 2, uniformly stirring, placing the mixture into a flask, refluxing, stirring and heating, and (4) preparing the dispersion liquid B obtained in the step 3And pumping and filtering the obtained reaction liquid by using a sand core funnel, leaching by using ethanol, and drying to obtain the surface modified carbon nano tube. Compared with the prior art, the method has the characteristics of less energy consumption, low cost, good repeatability, easiness in large-scale preparation and the like, and the surface modified carbon nanotube prepared by the method has the advantages of high dispersibility, good compatibility, excellent wettability, a large number of active sites and the like. In addition, the modified carbon nanotube supported palladium catalyst is applied to the selective oxidation reaction of benzyl alcohol, compared with the unmodified carbon nanotube supported palladium catalyst, the conversion rate of the benzyl alcohol is improved from 63.1% to 87.4%, and the catalytic performance is obviously improved. Compared with an unmodified carbon nanotube supported palladium catalyst, the modified carbon nanotube supported palladium catalyst has the advantages that the initial overpotential of the product carbon monoxide is reduced from 910mV to 690mV, the Faraday efficiency of the carbon monoxide is increased from 68% to 82% under the optimal voltage, and the performance of electrochemical reduction of carbon dioxide is obviously improved. The modified carbon nano tube loaded platinum catalyst is applied to hydrogen production by electrolyzing water, and compared with the unmodified carbon nano tube loaded platinum catalyst, the modified carbon nano tube loaded platinum catalyst is 10mA/cm2Under the current density of (1) MKOH solution, the overpotential is reduced from 140mV to 120mV, and the performance of the electrolyzed water is obviously improved.
Drawings
Fig. 1 is a raman spectrum analysis chart of the modified carbon nanotube prepared in example 1.
Fig. 2 is a raman spectrum analysis chart of the modified carbon nanotube prepared in example 2.
Fig. 3 is a raman spectrum analysis chart of the modified carbon nanotube prepared in example 3.
Fig. 4 is a raman spectrum analysis chart of the modified carbon nanotube prepared in example 4.
Fig. 5 is a raman spectrum analysis chart of the modified carbon nanotube prepared in example 6.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
0.1ml of methylene chloride was taken out by a pipette, dispersed in 10ml of toluene, and stirred for 1 min. Adding the dispersion into 10ml of deionized water for uniform dispersion, then adding 0.1g of carbon nano tube into the dispersion, stirring for 1min, placing the uniformly stirred mixed solution into a flask, refluxing, stirring and heating to 80 ℃, and keeping for 60 min. And after the reaction is finished, performing suction filtration by using a sand core funnel, leaching by using ethanol, and drying to obtain the surface modified carbon nano tube. It ID/IGAn increase in the value from 0.96 to 1.22 indicates a significant increase in carbon nanotube surface defects, as shown in FIG. 1. Compared with the untreated carbon nanotube supported palladium catalyst, the average particle size of the modified carbon nanotube supported palladium catalyst is reduced from 3.6nm to 2.1nm, and the loading is improved from 0.84 wt% to 1.61 wt%. The catalyst is applied to the selective oxidation reaction of the benzyl alcohol, the conversion rate of the benzyl alcohol is improved from 63.1% to 87.4%, and the catalytic performance is obviously improved.
Example 2
1ml of 1, 2-dichloroethane was taken out by a pipette, dispersed in 100ml of toluene and stirred for 5min for further use. Adding the dispersion into 100ml of deionized water for uniform dispersion, then adding 1g of carbon nano tube into the dispersion, stirring for 10min, placing the uniformly stirred mixed solution into a flask, refluxing, stirring and heating to 80 ℃, and keeping the temperature for 120 min. And after the reaction is finished, performing suction filtration by using a sand core funnel, leaching by using ethanol, and drying to obtain the surface modified carbon nano tube. It ID/IGAn increase in the value from 0.96 to 1.28 indicates a significant increase in carbon nanotube surface defects, as shown in FIG. 2. Compared with untreated carbon nanotube-supported platinum catalyst, the modified carbon nanotube-supported platinum catalyst is used for hydrogen production by electrolyzing water at 10mA/cm2Under the current density of (1M), the overpotential is reduced from 140mV to 118mV in a 1M KOH solution, and the performance of the electrolyzed water is obviously improved.
Example 3
0.5ml of 1, 2-dichloropropane was taken out by a pipette, dispersed in 50ml of toluene and stirred for 3min for further use. Adding the dispersion into 50ml deionized water, uniformly dispersing, adding 0.5g carbon nanotube into the dispersion, stirring for 5min, and mixingMixing the solutions, placing in a flask, refluxing, stirring, heating to 80 deg.C, and maintaining for 100 min. And after the reaction is finished, performing suction filtration by using a sand core funnel, leaching by using ethanol, and drying to obtain the surface modified carbon nano tube. It ID/IGAn increase in the value from 0.96 to 1.37 indicates a significant increase in carbon nanotube surface defects, as shown in FIG. 3. Compared with an untreated carbon nanotube supported palladium catalyst, the modified carbon nanotube supported palladium catalyst is used for electrochemical reduction of carbon dioxide, the initial overpotential of the product carbon monoxide is reduced from 910mV to 690mV, the Faraday efficiency of the carbon monoxide is increased from 68% to 82% under the optimal voltage, and the performance of electrochemical reduction of carbon dioxide is obviously improved.
Example 4
0.3ml of 1, 3-dichloropropane was taken out by a pipette, dispersed in 50ml of toluene and stirred for 4 min. Adding the dispersion into 50ml of deionized water for uniform dispersion, then adding 0.4g of carbon nano tube into the dispersion, stirring for 6min, placing the uniformly stirred mixed solution into a flask, refluxing, stirring and heating to 80 ℃, and keeping for 90 min. And after the reaction is finished, performing suction filtration by using a sand core funnel, leaching by using ethanol, and drying to obtain the surface modified carbon nano tube. It ID/IGThe increase in value from 0.96 to 1.48 indicates a significant increase in carbon nanotube surface defects, as shown in FIG. 4. Compared with untreated carbon nanotube-supported platinum catalyst, the modified carbon nanotube-supported platinum catalyst is used for hydrogen production by electrolyzing water at 10mA/cm2Under the current density of (1M), the overpotential is reduced from 140mV to 120mV in a 1M KOH solution, and the performance of the electrolyzed water is obviously improved.
Example 5
0.6ml of 1, 2-dichlorobutane was taken out by a pipette, dispersed in 80ml of toluene and stirred for 5 min. Adding the dispersion into 80ml deionized water for uniform dispersion, then adding 0.7g carbon nano tube into the dispersion, stirring for 8min, placing the uniformly stirred mixed solution into a flask, refluxing, stirring and heating to 80 ℃, and keeping for 110 min. And after the reaction is finished, performing suction filtration by using a sand core funnel, leaching by using ethanol, and drying to obtain the surface modified carbon nano tube. It ID/IGThe value increases from 0.96 to 1.42, indicating that the surface defects of the carbon nanotubes are increased significantly. Compared with the untreated carbon nanotube supported palladium catalyst, the average particle size of the modified carbon nanotube supported palladium catalyst is reduced from 3.6nm to 2.9nm, and the loading is improved from 0.84 wt% to 1.26 wt%. The catalyst is applied to the selective oxidation reaction of the benzyl alcohol, the conversion rate of the benzyl alcohol is improved from 63.1% to 85.2%, and the catalytic performance is obviously improved.
Example 6
0.9ml of 1, 4-dichlorobutane was taken out by a pipette, dispersed in 70ml of toluene and stirred for 4 min. Adding the dispersion into 70ml of deionized water for uniform dispersion, then adding 0.9g of carbon nano tube into the dispersion, stirring for 7min, placing the uniformly stirred mixed solution into a flask, refluxing, stirring and heating to 80 ℃, and keeping for 60 min. And after the reaction is finished, performing suction filtration by using a sand core funnel, leaching by using ethanol, and drying to obtain the surface modified carbon nano tube. It ID/IGAn increase in the value from 0.96 to 1.59 indicates a significant increase in carbon nanotube surface defects, as shown in FIG. 5. Compared with the untreated carbon nanotube supported palladium catalyst, the average particle size of the modified carbon nanotube supported palladium catalyst is reduced from 3.6nm to 2.7nm, and the loading is improved from 0.84 wt% to 1.29 wt%. The catalyst is applied to the selective oxidation reaction of the benzyl alcohol, the conversion rate of the benzyl alcohol is improved from 63.1% to 87.6%, and the catalytic performance is obviously improved.
Example 7
1ml of 1, 3-dichlorobutane was taken out by a pipette, dispersed in 100ml of toluene and stirred for 5min for further use. Adding the dispersion into 100ml of deionized water for uniform dispersion, then adding 1g of carbon nano tube into the dispersion, stirring for 10min, placing the uniformly stirred mixed solution into a flask, refluxing, stirring and heating to 80 ℃, and keeping the temperature for 120 min. And after the reaction is finished, performing suction filtration by using a sand core funnel, leaching by using ethanol, and drying to obtain the surface modified carbon nano tube. It ID/IGThe value increased from 0.96 to 1.51, indicating a significant increase in carbon nanotube surface defects. Compared with the untreated carbon nanotube supported palladium catalyst, the average particle size of the catalyst is reduced from 3.6nm by using the modified carbon nanotube supported palladium catalystAs low as 1.82nm, the loading is improved from 0.84 wt% to 1.69 wt%. The catalyst is applied to the selective oxidation reaction of the benzyl alcohol, the conversion rate of the benzyl alcohol is improved from 63.1% to 89.3%, and the catalytic performance is obviously improved.
Example 8
0.6ml of methylene chloride was taken out by a pipette, dispersed in 80ml of toluene, and stirred for 5 min. Adding the dispersion into 80ml of deionized water for uniform dispersion, then adding 0.8g of carbon nano tube into the dispersion, stirring for 8min, placing the uniformly stirred mixed solution into a flask, refluxing, stirring and heating to 80 ℃, and keeping for 110 min. And after the reaction is finished, performing suction filtration by using a sand core funnel, leaching by using ethanol, and drying to obtain the surface modified carbon nano tube. It ID/IGThe value increased from 0.96 to 1.24, indicating a significant increase in carbon nanotube surface defects. Compared with untreated carbon nanotube-supported platinum catalyst, the modified carbon nanotube-supported platinum catalyst is used for hydrogen production by electrolyzing water at 10mA/cm2Under the current density of (1M), the overpotential is reduced from 140mV to 127mV in a 1M KOH solution, and the performance of the electrolyzed water is obviously improved.
Example 9
0.3ml of 1, 4-dichlorobutane was taken out by a pipette, dispersed in 50ml of toluene and stirred for 4 min. Adding the dispersion into 50ml of deionized water for uniform dispersion, then adding 0.4g of carbon nano tube into the dispersion, stirring for 6min, placing the uniformly stirred mixed solution into a flask, refluxing, stirring and heating to 80 ℃, and keeping for 90 min. And after the reaction is finished, performing suction filtration by using a sand core funnel, leaching by using ethanol, and drying to obtain the surface modified carbon nano tube. It ID/IGThe increase in value from 0.96 to 1.53 indicates a significant increase in carbon nanotube surface defects. Compared with an untreated carbon nanotube supported palladium catalyst, the modified carbon nanotube supported palladium catalyst is used for electrochemically reducing carbon dioxide, the initial overpotential of the product carbon monoxide is reduced from 910mV to 610mV, the Faraday efficiency of the carbon monoxide is increased from 68% to 87% under the optimal voltage, and the performance of electrochemically reducing the carbon dioxide is obviously improved.

Claims (2)

1. A method for modifying the surface of a carbon nano tube by micromolecular chloralkane is characterized by comprising the following steps:
step 1, preparing a dispersion liquid A, taking 0.1-1.0ml of chloralkane by using a liquid-transferring gun, dispersing the chloralkane into 10-100ml of toluene, and stirring for 1-5min to obtain the dispersion liquid A; the chloralkane is selected from one of dichloromethane, 1, 2-dichloroethane, 1, 2-dichloropropane, 1, 3-dichloropropane, 1, 2-dichlorobutane, 1, 3-dichlorobutane or 1, 4-dichlorobutane;
step 2, preparing a dispersion liquid B, namely adding the dispersion liquid A prepared in the step 1 into 10-100ml of deionized water, and uniformly dispersing to obtain a dispersion liquid B;
step 3, adding 0.1-1.0g of carbon nano tube into the dispersion liquid B prepared in the step 2, stirring for 1-10min, placing the uniformly stirred mixed liquid into a flask, refluxing, stirring and heating for 75-85%oC, lasting for 60-120 min;
and 4, carrying out suction filtration on the reaction liquid obtained in the step 3 by adopting a sand core funnel, leaching by using ethanol, and drying to obtain the surface modified carbon nano tube.
2. The surface-modified carbon nanotube prepared by the method of claim 1, wherein the supported palladium catalyst is used as a catalyst carrier in the selective oxidation reaction of benzyl alcohol, in the electrochemical reduction reaction of carbon dioxide and in the application of the supported platinum catalyst in the hydrogen production by electrolyzing water.
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Citations (2)

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Publication number Priority date Publication date Assignee Title
US20090123750A1 (en) * 2007-11-09 2009-05-14 Chia-Hsun Chen Method for modifying carbon nanotube
CN106698395A (en) * 2016-12-06 2017-05-24 袁洁 Modified carbon nanotube for solar energy

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090123750A1 (en) * 2007-11-09 2009-05-14 Chia-Hsun Chen Method for modifying carbon nanotube
CN106698395A (en) * 2016-12-06 2017-05-24 袁洁 Modified carbon nanotube for solar energy

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* Cited by examiner, † Cited by third party
Title
通过溴代烷烃和羧基的酯化反应制备烷基改性的多壁碳纳米管;陈小乙等;《化学学报》;20091231;第67卷(第3期);第245-248页 *

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