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Cobalt complex having electrocatalytic activity on hydrogen peroxide

A technology of cobalt complexes and cobalt salts, which is applied in the field of material chemistry, can solve problems such as high prices and unstable enzymes, and achieve good electrocatalytic activity.

Inactive Publication Date: 2013-12-25
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its application is limited due to the instability and high price of the enzyme; therefore, the enzyme-free sensor-based H 2 o 2 Detection is gaining interest

Method used

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  • Cobalt complex having electrocatalytic activity on hydrogen peroxide
  • Cobalt complex having electrocatalytic activity on hydrogen peroxide
  • Cobalt complex having electrocatalytic activity on hydrogen peroxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh CoCl 2 ·6H 2 O (0.238g, 1.0mmol), H 2 Add L (0.024g, 0.1mmol) to 15mL of distilled water; stir to dissolve, let stand at room temperature, and slowly evaporate the solvent until crystals are precipitated. Remove the solution and air dry naturally to obtain red blocky crystals which are cobalt complexes.

[0021] Wherein, the ligand 5-((2-pyridyl)methyleneamino)-2-hydroxybenzoic acid (H 2 L) Preparation method:

[0022] Weigh 5-aminosalicylic acid (1.53g, 10mmol), 2-pyridinecarbaldehyde (1.0ml, 10mmol) and triethylamine (1ml, 10mmol) into 50mL ethanol, stir and heat at reflux at 80°C for 4h to obtain yellow Suspension, after the reaction, filter the filter residue, wash it three times with ethanol, and dry it naturally. The obtained solid powder is the ligand H 2 L.

Embodiment 2

[0024] Weigh CoSO 4 ·7H 2 O (0.028g, 0.1mmol), H 2 Add L (0.242g, 1.0mmol) to 40mL of distilled water; stir to dissolve, let stand at room temperature, and slowly evaporate the solvent until crystals are precipitated. Remove the solution and air dry naturally to obtain red blocky crystals which are cobalt complexes.

Embodiment 3

[0026] Weigh Co(NO 3 ) 2 ·6H 2 O (0.029g, 0.1mmol), H 2 Add L (0.121g, 0.5mmol) to 30mL of distilled water; stir to dissolve, let stand at room temperature, and slowly evaporate the solvent until crystals are precipitated. Remove the solution and air dry naturally to obtain red blocky crystals which are cobalt complexes.

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Abstract

The invention discloses a cobalt complex and a preparation method thereof, and the cobalt complex is characterized by having good electrocatalytic activity on hydrogen peroxide, the molecular formula of the cobalt complex is C26H26N4O10Co, the crystal system is orthorhombic, the space group is Pbcn, the cell parameters alpha, gamma and beta satisfy: a=15.928Angstrom, b=10.602Angstrom, c=15.596Angstrom, alpha is equal to gamma, is equal to beta and is equal to 90 degrees. The cobalt complex prepared in the invention is obtained by a mixing reaction of a cobalt salt and a derivative of 5-aminosalicylic acid, namely, 5-((2-pyridyl) methylene amino)-2-hydroxybenzoic acid according to a certain proportion, the cobalt complex has a specific spatial structure and an accurate molecular formula, the synthesis steps are simple, the yield can reach 45-70%, and the cobalt complex has good electrocatalytic activity, thereby being capable of being used as an electrocatalytic active material having a potential application prospect.

Description

technical field [0001] The invention relates to the field of material chemistry, in particular to a cobalt complex having electrocatalytic activity for hydrogen peroxide. Background technique [0002] In recent years, the design and synthesis of novel coordination compounds with novel topological structures or some special properties or potential application value has aroused widespread interest. 5-Aminosalicylic acid is one of the effective drugs for treating chronic colitis, and it is also one of the most important raw materials in dye chemistry. Due to the presence of amino, hydroxyl and carboxyl reactive groups in its molecular structure, 5-aminosalicylic acid can undergo various reactions. For example, the amino group at position 5 can react with 2-pyridinecarbaldehyde, chloroacetic acid and other reagents to synthesize new compounds. At the same time, it has the structural characteristics of amino, hydroxyl and carboxyl active coordination groups, endowing it with go...

Claims

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Application Information

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IPC IPC(8): C07D213/53
Inventor 赵亚云李星赵秀华张洁康晶燕
Owner NINGBO UNIV
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