FeS2-RGO composite material, preparation method and application

A composite material and hydrothermal reaction technology, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problem of high reaction cost, and achieve the effect of good hydrogen evolution effect, low cost and good stability

Inactive Publication Date: 2017-08-25
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This directly leads to the high cost of using Pt to catalyze the hydrogen evolution reaction.

Method used

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  • FeS2-RGO composite material, preparation method and application
  • FeS2-RGO composite material, preparation method and application
  • FeS2-RGO composite material, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The raw material composition when preparing composite material is as follows:

[0028] Graphene Oxide 5mg

[0029] Ferric Nitrate Nonahydrate 72mg

[0030] Thioacetamide 145mg

[0031] N,N-Dimethylformamide 16ml

[0032] 5wt% Nation solution 8μL

[0033] 98% concentrated sulfuric acid 13ml

[0034] A little ethanol

[0035] A little anhydrous methanol

[0036] The balance is distilled water

[0037] Above-mentioned composite material is by the preparation method of following steps:

[0038] Graphene oxide was synthesized by a modified Hummer method. Make ferric nitrate nonahydrate into a 0.2M solution, and thioacetamide into a 1M solution, then ultrasonically dissolve graphene oxide in 8ml of DMF, add ferric nitrate and thioacetamide solution, and stir at 90°C 24h, then cooled, centrifuged, and washed 3 times with distilled water to remove unreacted raw materials. Then add the DMF solution and heat it in a hydrothermal kettle for 5-10 hours, then centrifuge, w...

Embodiment 2

[0044] The raw material composition when preparing composite material is as follows:

[0045] Graphene Oxide 4mg

[0046] Ferric Nitrate Nonahydrate 72mg

[0047] Thioacetamide 150mg

[0048] N,N-Dimethylformamide 16ml

[0049] 5wt% Nation solution 8μL

[0050] 98% concentrated sulfuric acid 13ml

[0051] A little ethanol

[0052] A little anhydrous methanol

[0053] The balance is distilled water

[0054] Above-mentioned composite material is by the preparation method of following steps:

[0055] Graphene oxide was synthesized by a modified Hummer method. Make ferric nitrate nonahydrate into a 0.2M solution, and thioacetamide into a 1M solution, then ultrasonically dissolve graphene oxide in 10ml of DMF, add ferric nitrate and thioacetamide solution, and stir at 90°C 24h, then cooled, centrifuged, and washed 3 times with distilled water to remove unreacted raw materials. Then add the DMF solution and heat it in a hydrothermal kettle for 5-10 hours, then centrifuge, ...

Embodiment 3

[0061] The raw material composition when preparing composite material is as follows:

[0062] Graphene Oxide 4mg

[0063] Ferric Nitrate Nonahydrate 80mg

[0064] Thioacetamide 150mg

[0065] N,N-Dimethylformamide 16ml

[0066] 5wt% Nation solution 10μL

[0067] 98% concentrated sulfuric acid 13ml

[0068] A little ethanol

[0069] A little anhydrous methanol

[0070] The balance is distilled water

[0071] Above-mentioned composite material is by the preparation method of following steps:

[0072] Graphene oxide was synthesized by a modified Hummer method. Make ferric nitrate nonahydrate into a 0.2M solution, and thioacetamide into a 1M solution, then ultrasonically dissolve graphene oxide in 10ml of DMF, add ferric nitrate and thioacetamide solution, and stir at 90°C 24h, then cooled, centrifuged, and washed 3 times with distilled water to remove unreacted raw materials. Then add the DMF solution and heat it in a hydrothermal kettle for 5-10 hours, then centrifuge,...

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Abstract

The invention discloses a FeS2-RGO composite material, a preparation method and application. The FeS2-RGO composite material is prepared by the following steps: oxidized graphene is dissolved in DMF, then, is added in water solution of iron nitrate nonahydrate and thioacetamide in sequence, and is stirred overnight at a temperature of 85-95 DEG C; and the oxidized graphene is reduced through a hydrothermal reaction for centrifugation, washing and freeze drying to calcine under hydrogen to prepare the FeS2-RGO composite material. The FeS2-RGO composite material can be used for electrocatalytic hydrogen evolution; and as the raw material cost is low, the preparation method is simple, the hydrogen evolution performance is good, and the catalyst stability is high, the difficulty of difficult development to industrialization due to high hydrogen preparation cost in the prior art is preferably solved.

Description

technical field [0001] The invention relates to the technical field of hydrogen production, in particular to a FeS 2 -RGO composite materials, preparation methods and their applications. Background technique [0002] Energy is the foundation of human existence and the foundation of national development. In a country's strategy, energy often occupies a very important position, which not only determines the depth and breadth of a country's development, but also determines the rise and fall of a country. [0003] Compared with new renewable clean energy such as solar energy and nuclear energy, hydrogen has the advantages of relatively easy preparation conditions, simple equipment maintenance, and environmental protection. The heat released during its combustion is large, the product is water, and does not pollute the environment. Therefore, as a renewable green energy, hydrogen has entered our field of vision with its wide application prospects, and hydrogen is used as a new ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/06C25B1/04
CPCC25B1/04C25B11/04Y02E60/36
Inventor 蒋继波朱丽莹钱炜陈浩天冯晨萁韩生韦焕明张小杰陈元海
Owner SHANGHAI INST OF TECH
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