Production method and application of iron-nitrogen co-doped carbon catalyst used for electrocatalytic reduction of CO2

Abstract

The invention discloses a production method and application of a doped carbon catalyst used for electrocatalytic reduction of CO2. The carbon-based catalyst is doped with iron and nitrogen atoms, andcontains intrinsic carbon defects. Production of the doped carbon-based catalyst used for electrocatalytic reduction of the CO2 comprises the following steps: (1) dissolving an iron salt and urea in deionized water under stirring; (2) adding aniline into a metal salt solution, and conducting stirring for 1 h; (3) adding ammonium persulfate, and then conducting stirring for 0.5 h; (4) transferringan obtained mixed solution into a hydrothermal reactor, and carrying out a reaction; (5) conducting centrifugation on obtained suspension, cleaning the suspension subjected to centrifugation until thesuspension is neutral, and conducting drying to obtain a FeOOH / PANI precursor; and (6) calcining the obtained precursor in an inert gas atmosphere, then conducting acid pickling, and conducting calcining again to obtain the carbon-based catalyst. The production method is low in cost, simple and easy to control, and the catalyst is high in selectivity and good in catalytic activity in an electrocatalytic reduction process of the CO2.

Description

technical field

[0001] The invention relates to the technical field of electrocatalysis, in particular to a method for electrocatalytic reduction of CO 2 The iron-nitrogen co-doped carbon catalyst and its preparation method and application. Background technique

[0002] Extensive use of fossil energy leads to CO 2 Atmospheric levels have risen sharply, CO 2 As the most important greenhouse gas, its continuous growth will bring a series of environmental problems, such as: climate warming, water acidification, glaciers melting, sea level rise, etc., and then threaten the normal life of human beings, how to slow down and use CO 2 It is an urgent problem to be solved.

[0003] Electrocatalytic reduction of CO 2 Using electric energy as a driving force, which can be obtained from wind energy, tidal energy, geothermal energy and nuclear energy, has attracted people's attention due to its mild and controllable reaction conditions, green and pollution-free reaction process, and ...

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