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Bipyridyl ruthenium complex covalent functionalized graphene photo-catalyst and preparation method thereof

A bipyridine ruthenium complex and photocatalyst technology, applied in the field of photofunctional catalytic materials, can solve the problems of high requirements for production equipment, large negative impact on the environment, and harsh reaction conditions, and achieve low requirements for reaction conditions, good stability, The effect of high catalytic activity

Inactive Publication Date: 2013-12-11
山东安固强石墨烯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the reaction conditions are harsh, the requirements for production equipment are high, the production cost is high, and a large amount of energy is consumed
In addition, some methods produce waste water and waste residue, which need further treatment and have a greater negative impact on the environment.

Method used

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  • Bipyridyl ruthenium complex covalent functionalized graphene photo-catalyst and preparation method thereof
  • Bipyridyl ruthenium complex covalent functionalized graphene photo-catalyst and preparation method thereof
  • Bipyridyl ruthenium complex covalent functionalized graphene photo-catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Using 50mg graphite as raw material and 100mL N-methylpyrrolidone (NMP) as dispersant, ultrasonically disperse at room temperature for 30h. Then high-speed centrifugation, the supernatant was taken, and the concentration of the obtained graphene dispersion was about 0.2 mg / mL, and the yield was about 40%.

[0030] Measure 100mL of graphene dispersion (0.2mg / mL), add it to a 250mL three-necked flask, heat to 160°C, stir for 30min under nitrogen protection, add 33mg N-methylglycine and 34mg aldehyde pyridine mixture , added once every 24h, added a total of 100mg N-methylglycine and 112mg aldehyde pyridine mixture, and continued stirring for 5 days. After the reaction is completed, cool to room temperature, filter the reaction mixture, wash the solid repeatedly with acetone and ethanol, and dry it under vacuum at room temperature to obtain a graphene-based cycloaddition intermediate compound. The yield is about 8%.

[0031] Add 2 mg of the above-mentioned graphene-based ...

Embodiment 2

[0034] Using 50mg graphite as raw material and 100mL N-methylpyrrolidone (NMP) as dispersant, ultrasonically disperse at room temperature for 30h. Then high-speed centrifugation, the supernatant was taken, and the concentration of the obtained graphene dispersion was about 0.2 mg / mL, and the yield was about 40%.

[0035] Measure 100mL of graphene dispersion (0.2mg / mL), add it to a 250mL three-necked flask, heat to 160°C, stir for 30min under nitrogen protection, add 33mg N-methylglycine and 34mg aldehyde pyridine mixture , added once every 24h, added a total of 100mg N-methylglycine and 112mg aldehyde pyridine mixture, and continued stirring for 5 days. After the reaction is completed, cool to room temperature, filter the reaction mixture, wash the solid repeatedly with acetone and ethanol, and dry it under vacuum at room temperature to obtain a graphene-based cycloaddition intermediate compound. The yield is about 8%.

[0036] Add 2 mg of the above-mentioned graphene-based ...

Embodiment 3

[0040] Using 50mg graphite as raw material and 100mL N-methylpyrrolidone (NMP) as dispersant, ultrasonically disperse at room temperature for 30h. Then high-speed centrifugation, the supernatant was taken, and the concentration of the obtained graphene dispersion was about 0.2 mg / mL, and the yield was about 40%.

[0041] Measure 100mL of graphene dispersion (0.2mg / mL), add it to a 250mL three-necked flask, heat to 160°C, stir for 30min under nitrogen protection, add 33mg N-methylglycine and 34mg aldehyde pyridine mixture , Repeated addition every 24h, added a total of 100mg N-methylglycine and 112mg aldehyde pyridine mixture, and continued stirring for 3 days. After the reaction is completed, cool to room temperature, filter the reaction mixture, wash the solid repeatedly with acetone and ethanol, and dry it under vacuum at room temperature to obtain a graphene-based cycloaddition intermediate compound. The yield is about 8%.

[0042] Add 2 mg of the above-mentioned graphene-b...

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Abstract

The invention discloses a bipyridyl ruthenium complex covalent functionalized graphene photo-catalyst in a structure shown as a formula (I) described in the abstract. In the formula (I), R represents -H, -COOH, -SO3H or -OCH3. Graphene, methyl glycocol and formyl pyridine serve as raw materials, and a graphene base ring addition intermediate compound is synthesized through a 1, 3-dipolar cycloaddition method; the intermediate compound and a bipyridyl ruthenium complex are synthesized through complexing reaction; in order to further improve the photo-catalysis hydrogen evolution activity of the catalyst, a certain amount of platinum nano-particles can be loaded on the bipyridyl ruthenium complex covalent functionalized graphene photo-catalyst as a catalyst promoter. The bipyridyl ruthenium complex covalent functionalized graphene photo-catalyst has the advantages of wide photo-response range, high hydrogen production activity of catalytic water decomposition, high stability, mild catalytic reaction conditions (normal temperature and normal pressure) and the like.

Description

technical field [0001] The invention belongs to the technical field of photofunctional catalytic materials, and relates to a catalyst for photocatalytically decomposing water to produce hydrogen and a preparation method thereof, in particular to a bipyridyl ruthenium complex with covalent function for photocatalytically decomposing water to produce hydrogen Photocatalyst and preparation method of graphene. Background technique [0002] Hydrogen is the main industrial raw material, and also one of the important industrial gases and special gases. Hydrogen is widely used in petrochemical industry, electronics industry, metallurgical industry, food processing, float glass, fine organic synthesis, aerospace, etc. At present, the main methods of large-scale industrial hydrogen production include water gas method (production of hydrogen from coal and water), electrolysis of water method, hydrocarbon reforming method and reaction of active metals with acids. Traditional hydrogen ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28C07F15/00C01B3/04
CPCY02E60/364Y02E60/36
Inventor 杨平肖斌牟志刚杜玉扣
Owner 山东安固强石墨烯科技有限公司
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