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A Synthetic Method of Three-dimensional Radial Sn-Ni Alloy Loaded Platinum Nanoparticles Composite

A technology of tin-nickel alloy and composite materials, which is applied in the field of synthesis of three-dimensional radial tin-nickel alloy-loaded platinum nanoparticle composite materials, can solve the problem of expensive Pt, limited resource reserves, cost, electrode activity and stability that are difficult to meet fuel cells, etc. problems, to achieve convenient and concise product processing, high purity, and good catalytic effect of methanol oxidation

Inactive Publication Date: 2019-08-02
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the noble metal Pt and its alloys are still widely used as anode and cathode electrocatalysts in low-temperature fuel cells, but due to the high price of Pt, limited resource reserves, and the strong adsorption of CO intermediates generated during the oxidation process on the surface of Pt to form Pt-CO, etc. Factors that make it difficult to meet the actual needs of fuel cells in terms of cost, electrode activity and stability

Method used

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  • A Synthetic Method of Three-dimensional Radial Sn-Ni Alloy Loaded Platinum Nanoparticles Composite
  • A Synthetic Method of Three-dimensional Radial Sn-Ni Alloy Loaded Platinum Nanoparticles Composite
  • A Synthetic Method of Three-dimensional Radial Sn-Ni Alloy Loaded Platinum Nanoparticles Composite

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The first step, accurately weigh 0.0338g SnCl 2 2H 2 O, prepare 100mL solution with ethylene glycol, the concentration is 1.5mmol / L, accurately weigh 0.0357g NiCl 2 ·6H 2 O, prepare 100mL solution with ethylene glycol, the concentration is 1.5mmol / L, take the prepared 1.5mmol / L SnCl 2 2H 2 O and NiCl 2 ·6H 2 Put 5 mL of each ethylene glycol solution of O in a 30 mL reaction kettle, add 0.03 g of hexadecylamine and 2 mL of deionized water, and stir for 1 h.

[0034] In the second step, NaOH solution and 200 uL hydrazine hydrate were added to the reaction kettle, and after stirring evenly, the reaction kettle was put into an oven at 200° C. for 8 hours.

[0035] In the third step, the product is collected after the reaction, centrifuged, washed alternately with absolute ethanol and deionized water for several times, and dried in a vacuum oven to obtain a three-dimensional radial tin-nickel alloy.

[0036] In the fourth step, 1.0 mg of the three-dimensional radial t...

Embodiment 2

[0042] The first step, accurately weigh 0.0338g SnCl 2 2H 2O, prepare 100mL solution with ethylene glycol, the concentration is 1.5mmol / L, accurately weigh 0.0357g NiCl 2 ·6H 2 O, prepare 100mL solution with ethylene glycol, the concentration is 1.5mmol / L, take the prepared 1.5mmol / L SnCl 2 2H 2 O and NiCl 2 ·6H 2 Put 5 mL of each ethylene glycol solution of O in a 30 mL reaction kettle, add 0.03 g of hexadecylamine and 2 mL of deionized water, and stir for 1 h.

[0043] In the second step, NaOH solution and 200 uL hydrazine hydrate were added to the reaction kettle, and after stirring evenly, the reaction kettle was put into an oven at 200° C. for 4 hours.

[0044] In the third step, the product is collected after the reaction, centrifuged, washed alternately with absolute ethanol and deionized water for several times, and dried in a vacuum oven to obtain a three-dimensional radial tin-nickel alloy.

[0045] In the fourth step, 1.0 mg of the three-dimensional radial ti...

Embodiment 3

[0051] The first step, accurately weigh 0.0338g SnCl 2 2H 2 O, prepare 100mL solution with ethylene glycol, the concentration is 1.5mmol / L, accurately weigh 0.0357g NiCl 2 ·6H 2 O, prepare 100mL solution with ethylene glycol, the concentration is 1.5mmol / L, take the prepared 1.5mmol / L SnCl 2 2H 2 O and NiCl 2 ·6H 2 Put 5 mL of each ethylene glycol solution of O in a 30 mL reaction kettle, add 0.03 g of hexadecylamine and 2 mL of deionized water, and stir for 1 h.

[0052] In the second step, NaOH solution and 200 uL hydrazine hydrate were added to the reaction kettle, and after stirring evenly, the reaction kettle was put into an oven at 200° C. for 12 hours.

[0053] In the third step, the product is collected after the reaction, centrifuged, washed alternately with absolute ethanol and deionized water for several times, and dried in a vacuum oven to obtain a three-dimensional radial tin-nickel alloy.

[0054] In the fourth step, 1.0 mg of the three-dimensional radial ...

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Abstract

The invention relates to a method for synthesizing a three-dimensional radial tin-nickel alloy-loaded platinum nanoparticle composite material, which is specifically as follows: in the first step, an ethylene glycol solution of Sn and Ni inorganic salts and hexadecylamine are added into a reaction kettle, and the mixture is heated at a certain pH. Under the conditions, hydrazine hydrate is used as the reducing agent for high-temperature reaction for a period of time to obtain a three-dimensional radial tin-nickel alloy, which is centrifuged, washed, and dried. In the second step, sodium lauryl sulfate is added to the aqueous solution of the three-dimensional radial tin-nickel alloy, and H is added under ultrasonic conditions. 2 PPML 6 , to NaBH 4 A reducing agent is used to react. After the reaction, the sample is centrifuged, washed, and dried. The final product obtained is a three-dimensional radial tin-nickel alloy loaded platinum nanoparticle composite material. The method of the invention is used to prepare three-dimensional nanocomposite materials with stable structure, which is beneficial to material exchange and has excellent catalytic activity. The method of the invention is simple to operate, easy to control and simple to process the product, and is suitable for medium-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of inorganic nanometer materials, and in particular relates to a synthesis method of a three-dimensional radial tin-nickel alloy loaded platinum nanoparticle composite material. Background technique [0002] Designing and constructing metal nanocomposites with special structures is an important research field in the frontier of materials science in recent years. Judging from the current research, metal nanocomposites, as novel functional materials, are favored by researchers because they have many unique properties, such as: monodispersity, photoelectricity, magnetism, and catalytic properties. Compared with single metals, nano-alloy materials have special electronic structures and surface properties, and have good optical properties, thermodynamic properties, dielectric properties, mechanical properties, catalytic properties, etc., so they have received more and more attention. Because of its high structur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89H01M4/92
CPCH01M4/921H01M4/925B01J23/8966B01J35/393B01J35/50Y02E60/50
Inventor 温鸣陈雨婷李佳琪张雨熹房昊
Owner TONGJI UNIV
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