CN111790410A - Halogen-doped basic copper chloride compound and preparation method and application thereof - Google Patents

Halogen-doped basic copper chloride compound and preparation method and application thereof Download PDF

Info

Publication number
CN111790410A
CN111790410A CN202010514857.0A CN202010514857A CN111790410A CN 111790410 A CN111790410 A CN 111790410A CN 202010514857 A CN202010514857 A CN 202010514857A CN 111790410 A CN111790410 A CN 111790410A
Authority
CN
China
Prior art keywords
catalyst
halogen
copper chloride
basic copper
carbon dioxide
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
Application number
CN202010514857.0A
Other languages
Chinese (zh)
Inventor
彭慧胜
张波
白海鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fudan University
Original Assignee
Fudan University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fudan University filed Critical Fudan University
Priority to CN202010514857.0A priority Critical patent/CN111790410A/en
Publication of CN111790410A publication Critical patent/CN111790410A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/06Halogens; Compounds thereof
    • B01J27/08Halides
    • B01J27/122Halides of copper
    • B01J35/33
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/34Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
    • B01J37/348Electrochemical processes, e.g. electrochemical deposition or anodisation

Abstract

The invention belongs to the technical field of electrocatalytic carbon dioxide reduction, and particularly relates to a catalyst precursor halogen-doped basic copper chloride compound for electrocatalytic carbon dioxide reduction reaction, and a preparation method and application thereof. The halogen-doped basic copper chloride compound is prepared by a sol-gel method, wherein the halogen is bromine or iodine, and the content of the halogen is 1-20%. The halogen-doped basic copper chloride prepared by the invention can be used as a precursor of a catalyst for electrocatalytic carbon dioxide reduction reaction to prepare an electrode of the catalyst for electrocatalytic carbon dioxide reduction reaction; the halogen doping can promote the formation of the specific surface micro-morphology and structure of the catalyst precursor in the catalyst activation process, and regulate and control the catalyst structure, so as to regulate and control the catalytic reaction path and change the catalyst selectivity. The sol-gel method has simple process, can realize the high-selectivity electrocatalysis of carbon dioxide to reduce to generate methane or ethylene, and has good application prospect in the field of electrocatalysis of carbon dioxide reduction.

Description

Halogen-doped basic copper chloride compound and preparation method and application thereof
Technical Field
The invention belongs to the technical field of electrocatalysis carbon dioxide reduction catalysts, and particularly relates to a halogen-doped basic copper chloride catalyst precursor, and a preparation method and application thereof.
Background
The electrocatalytic carbon dioxide reduction has the potential of simultaneously solving the problems of clean energy development, greenhouse gas emission reduction, industrial raw material preparation and the like, so the electrocatalytic carbon dioxide reduction has important research value. Due to the rich d-electron structure of the copper element, the copper catalyst realizes various modes and strength adsorption of a primary product CO of carbon dioxide reduction, and can realize different CO activation modes and different reaction paths, so that the copper catalyst can realize the preparation of various reduction products. However, since the electrocatalytic carbon dioxide reduction reaction path is complicated and competing products are numerous, it is extremely difficult to achieve high selectivity of a single product. In the carbon dioxide reduction, the transition state CO can determine a catalytic reaction path and a product type, and the adsorption and activation of the CO on the surface of the catalyst are influenced by a series of factors, including catalyst factors such as a local structure of the catalyst, a particle size of the catalyst, a crystal boundary and a crystal face, and catalytic reaction condition factors such as an applied potential, an electrolyte type, a local pH value and an electrolyte concentration. Wherein the under-coordinated copper catalyst favors the hydrogenation of CO to CHO, thereby promoting CH4And (4) generating. But localized Cu0/Cu+The microstructure is favorable for promoting the coupling reaction to generate C2H4. By introducing different halogen doping into the catalyst precursor, the microstructure of the catalyst can be regulated, so that the intermediate state adsorption property can be regulated, and the catalytic reaction path and the catalytic product can be regulated.
Disclosure of Invention
The invention aims to provide a method for preparing p-CH with high catalytic activity for electrocatalytic carbon dioxide reduction reaction4A catalyst precursor halogen-doped basic copper chloride compound with high selectivity, a preparation method and application thereof.
The catalyst precursor halogen-doped basic copper chloride compound for the electrocatalytic carbon dioxide reduction reaction is prepared by a sol-gel method, wherein the halogen is one of bromine or iodine and accounts for 1% -20%.
The preparation method of the halogen-doped basic copper chloride compound provided by the invention specifically adopts an epoxy propane auxiliary hydrolysis method; the method comprises the following specific steps:
first, ethanol and isopropanol were mixed in a vessel, and CuCl was added2And KBr or KI, stirring until the KBr or the KI is dissolved; adding deionized water into the solution, and then slowly dropwise adding propylene oxide; standing for 12-36 hours, adding acetone into the container, transferring the container into a centrifuge tube, and continuously standing for 80-120 hours; and finally, centrifuging for 5-8 times by using a high-speed centrifuge and acetone as a solvent, drying the product, grinding and collecting to obtain a catalyst precursor bromine or iodine doped basic copper chloride.
The halogen-doped basic copper chloride prepared by the invention can be used as a precursor of a catalyst for electrocatalytic carbon dioxide reduction reaction to prepare an electrode of the catalyst for electrocatalytic carbon dioxide reduction reaction, and the preparation method comprises the following specific steps:
firstly, preparing catalyst precursor slurry: dispersing 5-10 mg of catalyst in 0.8-1.2 ml of deionized water, isopropanol and 5wt% of Nafion mixed solution, and performing ultrasonic dispersion for 25-35 minutes to obtain slurry; then:
and (II) preparing a catalyst electrode. There may be two types:
(1) preparing a glassy carbon working electrode loaded with a catalyst film by a dropping method: dropping 4-6. mu.l of the slurry onto a surface area of 0.07 cm2Naturally drying the glassy carbon electrode to obtain a working electrode; then, applying a constant potential by using an electrochemical workstation for activation; the resulting catalyst pair CH4Has high selectivity, and the activated catalyst is named as CH4-a Cu catalyst;
(2) dispersing halogen-doped basic copper chloride and a binder in a mixed solvent of ethanol and water, and after ultrasonic dispersion, dropwise coating catalyst slurry on a catalyst carrier; drying to obtain a catalyst electrode;
wherein the binder is a 5% perfluorosulfonic acid polymer solution, and the specific gravity of the binder in the catalyst slurry is 5-10%.
Wherein, the catalyst carrier can be carbon paper, carbon cloth, carbon felt, metal foam or metal foil, etc., and the loading capacity of the catalyst is 2-20 mg/cm2
Wherein, carbon black, carbon nano tube, graphene and other conductive agents with the specific gravity of 10-30% can also be added.
In the invention, halogen doping can promote the formation of the specific surface micro-morphology and structure of the basic copper chloride catalyst precursor in the catalyst activation process, and regulate and control the catalyst structure, further regulate and control the catalytic reaction path, and change the catalyst selectivity. The sol-gel method has simple process, can realize the high-selectivity electrocatalysis of carbon dioxide to reduce to generate methane or ethylene, the bromine-doped basic copper chloride catalyst has the methane Faraday efficiency of 59 percent and the carbon selectivity of 83 percent; the iodine-doped basic copper chloride has the advantages that the Faraday efficiency of ethylene reaches 71%, the carbon selectivity reaches 93%, and the iodine-doped basic copper chloride has a good application prospect in the field of electrocatalysis of carbon dioxide reduction.
Drawings
FIG. 1 is a scanning electron microscope image of bromine-doped copper oxychloride and iodine-doped copper oxychloride. Wherein, (a) and (b) are SEM images of bromine-doped basic copper chloride precursors under different times; (c) and (d) SEM images of the iodine-doped copper oxychloride precursor under different times.
FIG. 2 shows XPS results of bromine-doped basic copper chloride and iodine-doped basic copper chloride after activation. Wherein, (a), (b) and (c) are bromine-doped basic copper chloride Cu 2PXPS spectrograms, Cl 2PXPS, Br 3dXPS spectrograms; (d) and (e) and (f) are iodine doped copper oxychloride Cu 2PXPS spectrogram, Cl 2PXPS, I3 dXPS spectrogram.
FIG. 3 is a scanning electron microscope and a transmission electron microscope image of bromine-doped copper oxychloride and iodine-doped copper oxychloride after activation. Wherein, (a) is a bromine-doped copper oxychloride SEM image after activation; (b) TEM image of bromine-doped basic copper chloride after activation; (c) SEM image of bromine-doped basic copper chloride after activation; (d) TEM image of iodine doped basic copper chloride after activation.
FIG. 4 is a schematic diagram of a difference electron microscope showing the spheres of bromine-doped copper oxychloride and iodine-doped copper oxychloride after activation. Wherein, (a) is bromine-doped basic copper chloride after activation; (b) doping basic copper chloride for activated iodine.
FIG. 5 shows the carbon dioxide reduction results of bromine-doped basic copper chloride and iodine-doped basic copper chloride after activation. Wherein the potential is-1.71 Vvs. RHE, and the electrolyte is 0.05 MKHCO3. (a) The faradaic efficiency distribution of bromine-doped basic copper chloride after activation; (b) the faradaic efficiency distribution of the activated iodine doped basic copper chloride is shown.
Detailed Description
Example 1
(1) Preparing a bromine-doped basic copper chloride compound by a sol-gel method: 0.3g of copper dichloride (CuCl) is weighed out2) And 0.03 g of potassium bromide (K-bromine) dissolved in a mixed solvent of 4 mL of ethanol and 0.5 mL of deionized water. Then, 1 mL of propylene oxide was added dropwise to the solution and mixed well by shaking. After the solution was allowed to stand for 1 day, 30 mL of acetone was added, standing was continued for 5 days, and the precipitated product was washed with acetone. After the product is dried, the bromine-doped basic copper chloride shown in figures 1a and b, 2a and b and 3a and c can be obtained by grinding.
(2) Preparing a bromine-doped basic copper chloride compound electrode: 10 mg of the compound material was dispersed in a mixed solvent of 1 mL of ethanol and water (volume ratio: 1/4), and 80. mu.L of a 5% perfluorosulfonic acid type polymer solution was added, and after 30 minutes of sonication, the catalyst slurry was drop-coated on a glassy carbon electrode. And naturally drying to obtain the carbon dioxide reduction reaction catalyst electrode. The electrode was used for electrocatalytic carbon dioxide reduction, and the activated catalyst had a Cu-Cu coordination number of 7 (FIG. 4 a) and gave 59% CH4Faradaic efficiency with 83% carbon selectivity (figure 5 a).
Example 2
(1) Preparing iodine-doped basic copper chloride by a sol-gel method: 0.3g of copper dichloride (CuCl) is weighed out2) And 0.03 g of potassium iodide (KI) dissolved in a mixed solvent of 4 mL of ethanol and 0.5 mL of deionized water. Then, 1 mL of propylene oxide was added dropwise to the solution and mixed well by shaking. After the solution is kept stand for 1 day, 30 mL of acetone is added, and the solution is kept stand for 5 daysAnd washing the precipitated product with acetone. After the product is dried, grinding can obtain iodine doped copper oxychloride as shown in figures 1c and d, figures 2d, e and f and figures 3b and d.
(2) Preparing an iodine-doped basic copper chloride compound electrode: 10 mg of the compound material was dispersed in a mixed solvent of 1 mL of ethanol and water (volume ratio: 1/4), and 80. mu.L of a 5% perfluorosulfonic acid type polymer solution was added, and after 30 minutes of sonication, the catalyst slurry was drop-coated on a glassy carbon electrode. And naturally drying to obtain the carbon dioxide reduction reaction catalyst electrode. The electrode is used for electrocatalytic carbon dioxide reduction, and the activated catalyst has a large amount of local Cu+/Cu0Microstructure (FIG. 4 b), and 71% C was obtained2H4Faradaic efficiency with 93% carbon selectivity (figure 5 b).

Claims (7)

1. A catalyst precursor halogen-doped basic copper chloride compound for electrocatalytic carbon dioxide reduction reaction is characterized by being prepared by a sol-gel method, wherein halogen is one of bromine or iodine and accounts for 1% -20%.
2. A process for the preparation of a halogen-doped basic copper chloride compound according to claim 1, wherein propylene oxide-assisted hydrolysis is employed; the method comprises the following specific steps:
first, ethanol and isopropanol were mixed in a vessel, and CuCl was added2And KBr or KI, stirring until the KBr or the KI is dissolved; adding deionized water into the solution, and then slowly dropwise adding propylene oxide; standing for 12-36 hours, adding acetone into the container, transferring the container into a centrifuge tube, and continuously standing for 80-120 hours; and finally, centrifuging for 5-8 times by using a high-speed centrifuge and acetone as a solvent, drying the product, grinding and collecting to obtain a catalyst precursor bromine or iodine doped basic copper chloride.
3. Use of a halogen-doped basic copper chloride compound as defined in claim 1 as a precursor for a catalyst for electrocatalytic carbon dioxide reduction for the preparation of an electrode for the electrocatalytic carbon dioxide reduction catalyst.
4. The application of claim 3, which comprises the following steps:
firstly, preparing catalyst precursor slurry: dispersing 5-10 mg of catalyst in 0.8-1.2 ml of deionized water, isopropanol and 5wt% of Nafion mixed solution, and performing ultrasonic dispersion for 25-35 minutes to obtain slurry; then:
(II) preparing catalyst electrodes, wherein the catalyst electrodes comprise two types:
(1) preparing a glassy carbon working electrode loaded with a catalyst film by a dropping method: dropping 4-6 microliters of slurry on a glassy carbon electrode with the surface area of 0.07 square centimeter, and naturally drying to obtain a working electrode; then, applying a constant potential by using an electrochemical workstation for activation; the resulting catalyst pair CH4Has high selectivity, and the activated catalyst is named as CH4-a Cu catalyst;
(2) dispersing halogen-doped basic copper chloride and a binder in a mixed solvent of ethanol and water, and after ultrasonic dispersion, dropwise coating catalyst slurry on a catalyst carrier; and drying to obtain the catalyst electrode.
5. The use according to claim 4, wherein the binder is a 5% perfluorosulphonic polymer solution and the specific gravity of the binder in the catalyst slurry is 5-10%.
6. The use of claim 5, wherein the catalyst carrier is carbon paper, carbon cloth, carbon felt, metal foam or metal foil, and the loading of the catalyst is 2-20 mg/cm2
7. The use of claim 6, wherein the conductive agent such as carbon black, carbon nanotube, graphene, etc. with a specific gravity of 10-30% can be added.
CN202010514857.0A 2020-06-08 2020-06-08 Halogen-doped basic copper chloride compound and preparation method and application thereof Pending CN111790410A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010514857.0A CN111790410A (en) 2020-06-08 2020-06-08 Halogen-doped basic copper chloride compound and preparation method and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010514857.0A CN111790410A (en) 2020-06-08 2020-06-08 Halogen-doped basic copper chloride compound and preparation method and application thereof

Publications (1)

Publication Number Publication Date
CN111790410A true CN111790410A (en) 2020-10-20

Family

ID=72804062

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010514857.0A Pending CN111790410A (en) 2020-06-08 2020-06-08 Halogen-doped basic copper chloride compound and preparation method and application thereof

Country Status (1)

Country Link
CN (1) CN111790410A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113020614A (en) * 2021-02-26 2021-06-25 中国科学技术大学 Copper-based monatomic alloy catalyst, preparation method and application thereof, and membrane electrode electrolyte battery for preparing formic acid through carbon dioxide electroreduction
CN113774423A (en) * 2021-08-31 2021-12-10 北京大学深圳研究生院 Copper-based composite nano material and preparation method and application thereof
CN115821321A (en) * 2023-02-15 2023-03-21 天津大学 Phosphorus-doped catalyst with Cu (100) -rich crystal face exposure and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004176129A (en) * 2002-11-27 2004-06-24 Kotaro Ogura Method for manufacturing ethylene selectively from carbon dioxide
CN105316701A (en) * 2014-07-01 2016-02-10 中国科学院大连化学物理研究所 CO2 electrochemical reduction electrode, preparation and application thereof
CN109536991A (en) * 2018-12-14 2019-03-29 天津大学 A kind of application of the preparation method and cuprous oxide of loose porous cuprous oxide material in electro-catalysis reduction carbon dioxide
CN111229261A (en) * 2020-03-06 2020-06-05 厦门大学 Catalyst for preparing multi-carbon product by electro-reduction of carbon dioxide and carbon monoxide, preparation method and application thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004176129A (en) * 2002-11-27 2004-06-24 Kotaro Ogura Method for manufacturing ethylene selectively from carbon dioxide
CN105316701A (en) * 2014-07-01 2016-02-10 中国科学院大连化学物理研究所 CO2 electrochemical reduction electrode, preparation and application thereof
CN109536991A (en) * 2018-12-14 2019-03-29 天津大学 A kind of application of the preparation method and cuprous oxide of loose porous cuprous oxide material in electro-catalysis reduction carbon dioxide
CN111229261A (en) * 2020-03-06 2020-06-05 厦门大学 Catalyst for preparing multi-carbon product by electro-reduction of carbon dioxide and carbon monoxide, preparation method and application thereof

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
ANA SOFIA VARELA ET AL.: ""Tuning the Catalytic Activity and Selectivity of Cu for CO2 Electroreduction in the Presence of Halides"", 《ACS CATALYSIS》 *
DUNFENG GAO ET AL.: ""Improved CO2 Electroreduction Performance on Plasma-Activated Cu Catalysts via Electrolyte Design: Halide Effect"", 《ACS CATALYSIS》 *
KARTHISH MANTHIRAM ET AL.: ""Enhanced Electrochemical Methanation of Carbon Dioxide with a Dispersible Nanoscale Copper Catalyst"", 《JOURNAL OF THE AMERICAN CHEMICAL SOCIETY》 *
PHIL DE LUNA ET AL.: ""Catalyst electro-redeposition controls morphology and oxidation state for selective carbon dioxide reduction"", 《NATURE CATALYSIS》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113020614A (en) * 2021-02-26 2021-06-25 中国科学技术大学 Copper-based monatomic alloy catalyst, preparation method and application thereof, and membrane electrode electrolyte battery for preparing formic acid through carbon dioxide electroreduction
CN113774423A (en) * 2021-08-31 2021-12-10 北京大学深圳研究生院 Copper-based composite nano material and preparation method and application thereof
CN113774423B (en) * 2021-08-31 2022-09-27 北京大学深圳研究生院 Copper-based composite nano material and preparation method and application thereof
CN115821321A (en) * 2023-02-15 2023-03-21 天津大学 Phosphorus-doped catalyst with Cu (100) -rich crystal face exposure and preparation method thereof

Similar Documents

Publication Publication Date Title
Xu et al. Methanol electrocatalytic oxidation on Pt nanoparticles on nitrogen doped graphene prepared by the hydrothermal reaction of graphene oxide with urea
CN110038634B (en) Oxygen evolution reaction catalyst based on MXene and metal organic framework compound composite structure and synthesis method thereof
CN111790410A (en) Halogen-doped basic copper chloride compound and preparation method and application thereof
Zhang et al. Highly active and durable Pt/MXene nanocatalysts for ORR in both alkaline and acidic conditions
Sun et al. Poor crystalline MoS2 with highly exposed active sites for the improved hydrogen evolution reaction performance
CN104549242B (en) Preparation method of nanometer palladium-graphene three-dimensional porous composite electrocatalyst
CN106960948B (en) MoSxCarbon black nano composite material, preparation method and application thereof
CN107010670A (en) A kind of MoSxOy/ carbon nano-composite material, its preparation method and its application
CN106252616A (en) A kind of nickelous selenide/hollow carbon fiber composite and preparation method thereof
CN107746051A (en) A kind of nitrogen-doped graphene nanobelt nano-cobaltic-cobaltous oxide hybrid material and preparation method thereof
CN107829107A (en) A kind of graphene/carbon nano-tube load single dispersion metal atomic composite catalyst and its preparation method and application
CN103480406A (en) Nitrogen-doped graphene/nitrogen-doped carbon nanotube/tricobalt tetraoxide composite paper and preparation method thereof
Shi et al. Biomass-derived precious metal-free porous carbon: Ca-N, P-doped carbon materials and its electrocatalytic properties
CN113718281A (en) Graphene quantum dot/MXene nanosheet two-dimensional composite material and preparation method and application thereof
CN108232213A (en) A kind of nitrogen-doped graphene-carbon nanotube-cobaltosic oxide hybrid material and preparation method thereof
CN101607197A (en) A kind of preparation method of fuel-cell catalyst
CN109244484A (en) A kind of preparation method of porous graphene/carbon nano tube flexible self-supported membrane material
Dong et al. MnO2 nanowires/CNTs composites as efficient non-precious metal catalyst for oxygen reduction reaction
CN105977501A (en) High-performance oxygen reduction MnO2-Mn3O4/carbon nanotube composite catalyst and preparation method and application thereof
He et al. Hydrophobic electrocatalyst for the enhanced activity of oxygen reduction reaction through controllable liquid/gas/solid interface
CN109935840A (en) A kind of preparation method of fuel cell Pt base catalyst
Ding et al. Modulating electronic structure of cobalt phosphide precatalysts via dual-metal incorporation for highly efficient overall water splitting
CN104258848B (en) Preparation method and application of Pt/3D (Three dimensional) graphene composite catalyst
Wang et al. Oxygen self-doping formicary-like electrocatalyst with ultrahigh specific surface area derived from waste pitaya peels for high-yield H2O2 electrosynthesis and efficient electro-Fenton degradation
Miao et al. A bio-inspired N-doped porous carbon electrocatalyst with hierarchical superstructure for efficient oxygen reduction reaction

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20201020