Nitro ferrous phthalocyanine/graphene composite material and preparation method thereof

A technology of nitroferrous phthalocyanine and composite material, applied in the field of nitroferrous phthalocyanine/graphene composite material and preparation thereof, can solve the problems of high manufacturing cost, poor activity and stability of noble metal nanocatalyst, and achieve excellent Catalytic activity, simple and easy synthesis method, and the effect of improving catalytic activity

Inactive Publication Date: 2014-10-08
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is that the noble metal nanocatalyst (mainly Pt) has the defects of high production cost, poor activity and stability

Method used

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  • Nitro ferrous phthalocyanine/graphene composite material and preparation method thereof
  • Nitro ferrous phthalocyanine/graphene composite material and preparation method thereof
  • Nitro ferrous phthalocyanine/graphene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Disperse 0.5g of graphite and 0.5g of sodium nitrate in 42.32g of concentrated sulfuric acid, slowly add 3g of potassium permanganate under mechanical stirring at 0°C; stir in a water bath at 35°C for 1 hour; add 40g of water, and After stirring at 90°C for 30min, add 100g of water and 4.44g of 30% hydrogen peroxide (H 2 o 2 ) after suction filtration, washing with water and centrifugation until the centrifuged water is neutral, vacuum drying at 45° C. for 12 hours to obtain graphite oxide;

[0032] (2) Disperse 0.1 g of the graphite oxide in 100 g of water to form a graphite oxide aqueous solution; add 0.5 g of sodium polystyrene sulfonate after ultrasonic oscillation of the graphite oxide aqueous solution for 4 h and continue ultrasonication for 1 h, add 1.03 g of hydrazine hydrate React at 100°C for 24 hours, cool to room temperature, centrifuge, and wash with water and ethanol to obtain graphene.

Embodiment 2

[0034] 0.63375g of FeCl 2 4H 2 O and 1.7313g of 4-nitrophthalonitrile were dissolved in n-amyl alcohol, and 1.019g of 1,8-diazabicycloundec-7-ene (DBU) was added, vacuumized 3 times, under N 2 Under air protection, react at 160°C for 6 hours; after the reaction is completed, cool down to room temperature, vacuum filter, first rinse with distilled water, then rinse with acetone, dilute hydrochloric acid with a concentration of 1mol / mL and ethanol, and finally rinse with distilled water until the filtrate The pH value is neutral, and vacuum-dried at 40-50°C for 10 hours to obtain nitroferrous phthalocyanine.

Embodiment 3

[0036] Disperse 10 mg of graphene in 9.487 g of DMF, add 10 mg of the nitroferrous phthalocyanine, and conduct a hydrothermal reaction at 160 ° C for 12 hours to obtain a nitroferrous phthalocyanine / graphene composite material with a mass ratio of 1:1 [FeTNPc / PGr, 1:1].

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Abstract

The invention discloses a nitro ferrous phthalocyanine / graphene composite material and a preparation method thereof, belonging to the technical field of methanol fuel cell cathode catalyst application. The nitro ferrous phthalocyanine / graphene composite material consists of nitro ferrous phthalocyanine and graphene according to a mass ratio of 1 to (0.5-2); the nitro ferrous phthalocyanine forms a nano sphere structure on the surface of a graphene sheet. In the preparation method, with 1-pentanol as a reaction solvent and 1,8-diazabicyclo undecane-7-ene as a catalyst, nitro ferrous phthalocyanine is prepared from ferrous chloride tetrahydrate by a one-step process; the nitro ferrous phthalocyanine / graphene composite material with different mass ratios is prepared by carrying out hydrothermal reaction and adjusting the ratio of graphene to nitro ferrous phthalocyanine. The nitro ferrous phthalocyanine / graphene composite material disclosed by the invention has excellent catalytic activity and catalytic stability to oxygen as well as good methanol resistance. The synthesis method provided by the invention is simple and easy to implement and simple to operate.

Description

technical field [0001] The invention relates to the technical field of methanol fuel cell cathode catalyst application, in particular to a nitroferrous phthalocyanine / graphene composite material and a preparation method thereof. Background technique [0002] Direct methanol fuel cell (Direct Methanol Fuel Cell, DMFC) is a kind of proton exchange membrane fuel cell (PEMFC), which directly uses methanol aqueous solution or steam methanol as the source of fuel supply. As a kind of Proton Exchange Membrane Fuel Cell (PEMFC), DMFC has the characteristics of low-temperature fast start-up, clean and environmentally friendly fuel, and simple battery structure, which makes DMFC likely to become the mainstream of future portable electronic product applications, but methanol at the anode of DMFC is prone to Cross-infiltration can lead to faster degradation of battery performance. At the same time, the cathode catalyst of DMFC usually uses Pt-based catalysts, such as Pt-Ti, Pt-Cr, Pt-Fe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90B01J31/22
CPCY02E60/50H01M4/9008H01M4/9083H01M8/1011
Inventor 何兴权俞丁凌
Owner CHANGCHUN UNIV OF SCI & TECH
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