Cobalt complex with electrochemical catalytic activity
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A technology of cobalt complexes and catalytic activity, which is applied in the field of cobalt complexes with electrochemical catalytic activity and its preparation, can solve the problems of high raw material cost, many by-products, and many preparation steps for the synthesis of macrocyclic ligands, and achieve good results. The effect of electrochemical catalytic activity
Inactive Publication Date: 2013-12-11
NINGBO UNIV
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The above-mentioned oxygen reduction electrocatalysts are all transition metal macrocyclic compounds containing macrocyclic structures, which have many preparation steps, complex synthesis process, many by-products, and high cost of raw materials for synthesizing macrocyclic ligands.
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Embodiment 1
[0022] Add sulfadiazine (0.50mmol, 0.125g) to the 50mL stainless steel reaction kettle, Co(OAc) 4H 2 O (1.0mmol, 0.249g), 2,2'-bipyridine (0.50mmol, 0.078g), KOH (0.50mmol, 0.028g), add an appropriate amount of water 10mL, stir to mix evenly. Seal the stainless steel reaction kettle, put it in an oven, heat at 60°C for 72h; then cool it down to room temperature naturally, and open the reaction kettle to obtain red crystals.
Embodiment 2
[0024] Add sulfadiazine (0.20mmol, 0.050g) to the 50mL stainless steel reaction kettle, CoSO 4 ·7H 2 O (1.2mmol, 0.337g), 2,2'-bipyridine (0.6mmol, 0.936g), KOH (0.40mmol, 0.023g), add an appropriate amount of water 15mL, stir to mix evenly. Seal the stainless steel reaction kettle, put it in an oven, and heat it at 160°C for 24 hours; then cool it down to room temperature naturally, and open the reaction kettle to obtain red crystals.
Embodiment 3
[0026] Add sulfadiazine (0.9mmol, 0.225g) in the 50ml stainless steel reaction kettle, CoCl 2 ·6H 2 O (0.6mmol, 0.167g), 2,2'-bipyridine (0.6mmol, 0.094g), KOH (1.0mmol, 0.056g), add an appropriate amount of water 18mL, stir to mix evenly. Seal the stainless steel reaction kettle, put it in an oven, and heat it at 100°C for 48h; then cool it down to room temperature naturally, and open the reaction kettle to obtain red crystals.
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Abstract
The invention discloses a cobalt complex with electrochemical catalytic activity and a preparation method thereof. The cobalt chemical combined electro-catalysis material is a cobalt complex with a certain spatial structure, the molecular formula of the cobalt complex is C3OH26CoN10O4S2. The preparation method of the cobalt complex chemical combined electro-catalysis material comprises the following steps: enabling sulfadiazine with conjugate big Phi bond, 2, 2'-dipyridyl and cobalt ions with electro-catalysis activity to be subjected to chemical reaction, so as to obtain the novel cobalt complex containing sulfadiazine and dipyridyl. According to the invention, the cobalt complex has electro-catalysis activity, accurate spatial structure and molecular formula; cobalt atoms can form a stable coordination bond with a ligand by using the empty d electronic orbit of the atoms, so as to facilitate electron to be transmitted, and further facilitate the proceeding of the electrochemical reaction; the prepared cobalt complex has good electro-catalysis activity, and has wide application prospects as an electro-catalysis active material.
Description
technical field [0001] The invention belongs to the field of chemical materials, and in particular relates to a cobalt complex with electrochemical catalytic activity and a preparation method thereof. Background technique [0002] Electrocatalysis is a kind of catalysis that accelerates the reaction by charge transfer at the electrode-electrolyte interface. Its essence is to change the potential or reaction rate of the reaction in a wide range by changing the surface modifier (or surface state) of the electrode or the modifier in the solution, so that the electrode not only has the function of electron transfer, but also can promote the electrochemical reaction. and select. Since transition metal atoms can form empty d-electron orbitals for chemisorption bonds, they are often used as electrocatalysts. [0003] Electrocatalysis is divided into two types: oxidation-reduction electrocatalysis (medium electrocatalysis) and non-oxidation-reduction electrocatalysis (shell layer ...
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