Preparation method of iron phosphide nano material and application of iron phosphide nano material as electrocatalyst

A technology of nanomaterials and iron phosphide, which is applied in the field of preparation of iron phosphide nanomaterials, can solve the problems of high price, difficulty in satisfying industrial production and application, and scarcity of platinum reserves, and achieve simple phosphating method and multiple surface active sites Accurate and controllable effects of points and experimental conditions

Pending Publication Date: 2021-07-13
CHINA THREE GORGES CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, platinum reserves are scarce and expensive, which makes it ...

Method used

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  • Preparation method of iron phosphide nano material and application of iron phosphide nano material as electrocatalyst
  • Preparation method of iron phosphide nano material and application of iron phosphide nano material as electrocatalyst
  • Preparation method of iron phosphide nano material and application of iron phosphide nano material as electrocatalyst

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Experimental program
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Effect test

Embodiment 1

[0039] (01) Dissolve 0.7843g of ammonium ferrous sulfate hexahydrate in 15ml of ultrapure water and add dropwise to a uniform solution of 1.0g of sodium hydroxide dissolved in 5ml of ultrapure water, 10ml of oleic acid and 10ml of ethanol. After stirring well, a brown precipitate was produced.

[0040] (02) Put in a 100ml reactor, heat to 180°C, keep warm for 10 hours, cool the reactor to room temperature in an oven, and then take it out.

[0041] (03) Centrifuge and wash the generated ferric oxide with ethanol to obtain 0.1237 g of iron oxide particles, which are dispersed in 4 mL of cyclohexane for storage.

[0042] (04) Add 124 mg of carbon powder with a high specific surface area to the ferric oxide dispersed in cyclohexane obtained in step (03), and after ultrasonication, suction filtration, and drying, the ferric oxide loaded on the carbon powder is obtained. iron nanoparticles.

[0043] (05) Place the porcelain boat with 1g of sodium hypophosphite on the air inlet sid...

Embodiment 2

[0052] (01) Dissolve 0.54g ferric chloride hexahydrate in 15ml ultrapure water and add dropwise to a homogeneous solution of 1.0g sodium hydroxide dissolved in 5ml ultrapure water, 10ml oleic acid and 10ml ethanol. After stirring evenly, a brick red precipitate was produced.

[0053] (02) Put in a 100ml reactor, heat to 180°C, and continue heating for 10 hours, then cool the reactor to room temperature in an oven and take it out.

[0054] (03) The generated iron oxide particles were centrifuged three times with ethanol and washed to obtain 0.128 g of iron oxide, which were dispersed in 4 mL of cyclohexane for storage.

[0055] (04) Add 128 mg of carbon powder with high specific surface area to the cyclohexane obtained in step (03) with iron oxide particles dispersed therein, and after ultrasonication, suction filtration, and drying, iron oxide nanoparticles loaded on the carbon powder are obtained.

[0056] (05) Place the porcelain boat containing 1 g of sodium hypophosphite on...

Embodiment 3

[0066] (01) Dissolve 0.7843 g ammonium ferrous sulfate hexahydrate in 15 ml ultrapure water and add dropwise to a homogeneous solution of 0.5 g sodium hydroxide dissolved in 5 m water, 10 oleic acid and 10 ml ethanol. After stirring well, a light brown precipitate was produced.

[0067] (02) Put in a 100ml reactor, heat to 180°C, and continue heating for 10 hours, then cool the reactor to room temperature in an oven and take it out.

[0068] (03) The generated iron oxyhydroxide particles were centrifuged and washed with ethanol to obtain 0.144 g of iron oxide particles, which were dispersed in 4 mL of cyclohexane for storage.

[0069] (04) Add 144 mg of carbon powder with a high specific surface area to the cyclohexane obtained in step (03) dispersed with iron oxyhydroxide particles, and after ultrasonication, suction filtration, and drying, the ferric iron tetroxide loaded on the carbon powder is obtained nanoparticles.

[0070] (05) Put the carbon-loaded iron oxyhydroxide ...

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Abstract

The invention discloses a preparation method of an iron phosphide nano material and application of the iron phosphide nano material as an electrocatalyst, during preparation, oxide particles of iron are prepared by adopting a hydrothermal method, then the oxide particles are loaded on carbon powder, and finally, the iron oxide particles are converted into iron phosphide particles by adopting a high-temperature gas phase phosphating method. The preparation process is simple to operate, easy to control and low in cost. According to the method, the precursor morphology is regulated and controlled, the optimal phosphating condition is explored, and the initial appearance morphology is reserved. The components of the material are FeP and FeP4 or FeP and FeP2, and the hydrogen evolution reaction can be continuously, efficiently and stably catalyzed.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a preparation method of iron phosphide nanometer material and its application as an electrocatalyst. Background technique [0002] Hydrogen production by electrolysis of water is a possible way to cleanly produce hydrogen energy in the future. However, among various hydrogen production methods, electrocatalytic hydrogen production has become the focus of current hydrogen production research due to the advantages of multiple raw materials and various forms of energy usage. Platinum (Pt)-based electrodes are currently the most efficient electrodes for water electrolysis. However, platinum reserves are scarce and expensive, which makes it difficult to meet the requirements of industrial production and application. Therefore, the development of non-noble metal effective hydrogen electrode materials has become the current research focus of electrolysis o...

Claims

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Application Information

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IPC IPC(8): B01J27/185C01B25/08C25B1/04
CPCB01J27/185C01B25/08C25B1/04Y02E60/36
Inventor 王新宇王勇胜尹立坤谢宁宁朱威
Owner CHINA THREE GORGES CORPORATION
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