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Cobalt complex with electrocatalytic activity on formaldehyde and preparation method thereof

A technology of cobalt complexes and electrocatalysis, applied in the field of material chemistry, can solve problems such as poor safety, high energy consumption, complex operation and analysis, etc., achieve accurate spatial structure, facilitate electronic transition and energy transfer, and have good electrocatalytic activity Effect

Active Publication Date: 2017-07-07
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, use Raman spectroscopy to detect formaldehyde (Zhang Qianxuan, Guan Xuchun, Cui Houxin, a device and method for formaldehyde detection, application publication number CN102749318), this method is too complicated to operate and analyze
There is also a method for detecting formaldehyde using thermal sensing properties (Liu Dongfang, Jiang Feng, Ma Xiaocong, formaldehyde gas sensor, application publication number CN 101825604A). When this method is used, the heating electrode group must heat the gas sensing layer to a very high temperature (300°C) can be detected normally, which consumes a lot of energy and has poor safety.

Method used

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  • Cobalt complex with electrocatalytic activity on formaldehyde and preparation method thereof
  • Cobalt complex with electrocatalytic activity on formaldehyde and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh CoCl 2 ·6H 2 O (0.3mmol, 0.0714g), 5-nitroorotate potassium monohydrate (0.3mmol, 0.0772g) is placed in a beaker, add water 10mL, heat, stir to make it dissolve, obtain the reaction mixture aqueous solution; The reaction mixture aqueous solution Transfer to a 25mL stainless steel reaction kettle with polytetrafluoroethylene lining, seal the reaction kettle and place it in a blast drying oven, heat and react at 100°C for 72 hours, cool to room temperature after the reaction is completed, open the reaction kettle to obtain brown-red block crystals ; Take out the brownish-red blocky crystal and dry it naturally to obtain the cobalt complex.

Embodiment 2

[0020] Weigh CoCl 2 ·6H 2 O (0.3mmol, 0.0714g), 5-nitroorotate potassium monohydrate (0.6mmol, 0.154g) is placed in the beaker, add water 15mL, heat, stir to make it dissolve, obtain the reaction mixture aqueous solution; The reaction mixture aqueous solution Transfer to a 25mL stainless steel reaction kettle with polytetrafluoroethylene lining, seal the reaction kettle and place it in a blast drying oven, heat and react at 120°C for 24 hours, cool to room temperature after the reaction, open the reaction kettle to obtain brown-red block crystals ; Take out the brownish-red blocky crystal and dry it naturally to obtain the cobalt complex.

Embodiment 3

[0022] Weigh CoCl 2 ·6H 2 O (0.2mmol, 0.0475g), 5-nitroorotic potassium monohydrate (0.3mmol, 0.0772g) is placed in a beaker, add water 13mL, heat, stir to make it dissolve, obtain the reaction mixture aqueous solution; The reaction mixture aqueous solution Transfer to a 25mL stainless steel reaction kettle with polytetrafluoroethylene lining, seal the reaction kettle and place it in a blast drying oven, heat and react at 110°C for 48 hours, cool to room temperature after the reaction, open the reaction kettle to get brown-red block crystals ; Take out the brownish-red blocky crystal and dry it naturally to obtain the cobalt complex.

[0023] The cobalt complexes prepared in Examples 1-3 were subjected to structural testing, and the results showed that the carboxyl group of 5-nitroorotic acid was removed during the reaction, and its nitrogen was used to coordinate with cobalt ions to form a new cobalt coordination compound. Its chemical formula of the cobalt complex that th...

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Abstract

The invention discloses a cobalt complex with electrocatalytic activity on formaldehyde and a preparation method thereof. The cobalt complex is an electrocatalytic material of an accurate spatial structure, a chemical formula of the cobalt complex is CoC8H12N6O12, a structural unit is [Co(C4H2N3O4)2(H2O)4], a crystal system is a triclinic crystal system, a space group is P-1, and crystal cell parameters are described in the specification, wherein alpha is 97.141 degrees, beta is 108.592 degrees, gamma is 115.555 degrees, and a cobalt ion is a hexa-coordinate octahedron geometrical configuration. The preparation method of the cobalt complex with the electrocatalytic activity on the formaldehyde comprises the step that chemical reaction is carried out on a 5-nitro potassium orotate monohydrate and the cobalt ion with electrocatalytic activity, so that the cobalt complex is obtained. The preparation method is simple in operation, low in cost and applicable to large-scale production. The obtained cobalt complex has good electrocatalytic activity and has potential application prospects as an electrocatalytic material.

Description

technical field [0001] The invention belongs to the field of material chemistry, and in particular relates to a cobalt complex having electrocatalytic activity for formaldehyde and a preparation method thereof. Background technique [0002] Electrocatalysis is a type of catalysis capable of accelerating charge transfer reactions at the electrode-electrolyte interface. Electrocatalysis includes two aspects of electrode reaction and catalysis, so electrocatalysts must have these two functions at the same time: one can conduct electricity and transfer electrons relatively freely; the other can effectively catalyze the activation of substrates. At present, electrocatalysis is mainly used in electrocatalytic treatment of sewage; electrocatalytic degradation of chromium-containing wastewater; electrolytic desulfurization of flue gas and raw coal; simultaneous removal of NO by electrocatalysis x and SO 2 ; Electrolytic reduction of carbon dioxide, etc. Selecting suitable electro...

Claims

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Application Information

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IPC IPC(8): C07D239/553B01J31/22G01N27/30
CPCB01J31/1815B01J2531/845C07D239/553G01N27/305
Inventor 徐欢李星
Owner NINGBO UNIV
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