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Pt-Ni alloy nanomaterial adopting network structure and preparation method thereof

A technology of alloy nanomaterials and network structures, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, electrodes, etc., can solve the complex preparation process of Pt-based alloy nanomaterials Low porosity, unfavorable for large-scale preparation of catalysts, etc., achieve good promotion and application prospects, simple and feasible preparation process, and improve catalytic activity and utilization rate

Active Publication Date: 2019-02-26
TECHN PHYSICS INST HEILONGJIANG ACADOF SCI
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problems that the preparation process of existing Pt-based alloy nanomaterials is relatively complicated, which is unfavorable for the large-scale preparation of catalysts, and the prepared Pt-based alloy nanomaterials have low porosity and poor stability, and provide a network structure Pt- Ni alloy nanomaterial and preparation method thereof

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  • Pt-Ni alloy nanomaterial adopting network structure and preparation method thereof
  • Pt-Ni alloy nanomaterial adopting network structure and preparation method thereof
  • Pt-Ni alloy nanomaterial adopting network structure and preparation method thereof

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specific Embodiment approach 1

[0016] Specific embodiment 1: The network structure Pt-Ni alloy nanomaterial in this embodiment is a spongy three-dimensional network structure formed by interconnecting Pt-Ni alloy nanoparticles; the particle size of a single Pt-Ni alloy nanoparticle The diameter is 20nm~30nm; the porosity of the network structure Pt-Ni alloy nanomaterial is 50%~70%, and the specific surface area of ​​the network structure Pt-Ni alloy nanomaterial calculated according to the mass of Pt is 35m 2 / g~50m 2 / g.

specific Embodiment approach 2

[0017] Specific embodiment two: the preparation method of a kind of network structure Pt-Ni alloy nano material of present embodiment is carried out according to the following steps:

[0018] 1. First, mix cetyltrimethylammonium bromide, chloroform, ultrapure water and isopropanol, and stir for 30 minutes to 120 minutes at room temperature and at a stirring speed of 50 rpm to 100 rpm to obtain sol micelles, and then Add chloroplatinic acid and nickel acetate to the sol micelles in turn, and continue stirring for 1h to 2h under the condition of a stirring speed of 50rpm to 100rpm to obtain a mixed solution;

[0019] The mole of described cetyl trimethyl ammonium bromide and the volume ratio of chloroform are 1mmol:(10~100) mL; The mole of described cetyl trimethyl ammonium bromide and the volume ratio of ultrapure water The volume ratio is 1mmol: (5~20) mL; the volume ratio of the mole of the cetyltrimethylammonium bromide to isopropanol is 1mmol: (15~45) mL; the cetyl The mol...

specific Embodiment approach 3

[0023] Specific embodiment three: the difference between this embodiment and specific embodiment two is: in step 2, the mixed solution is placed 60 Co gamma ray is irradiated, under the condition that the total dose is 10kGy-20kGy, irradiated for 5h-10h, and the solution after irradiation is obtained. Others are the same as in the second embodiment.

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Abstract

The invention discloses a Pt-Ni alloy nanomaterial adopting a network structure and a preparation method thereof, and relates to the alloy nanomaterial and the preparation method thereof, and solves the problems that the preparation process of the existing Pt-based alloy nanomaterial is relatively complicated, which is not conducive to large-scale preparation of a catalyst, and the prepared Pt-based alloy nanomaterial has low porosity and poor stability. The Pt-Ni alloy nanomaterial adopting the network structure is a sponge-like three-dimensional net structure formed by interconnecting Pt-Nialloy nanoparticles. The preparation method comprises the following steps: 1, firstly, mixing hexadecyltrimethylammonium bromide, chloroform, ultrapure water and isopropanol to obtain a sol micelle, and then sequentially adding chloroplatinic acid and nickel acetate into the sol micelle to obtain a mixed solution; 2, irradiating the mixed solution to obtain an irradiated solution; 3, centrifuging,washing and drying the irradiated solution to obtain the Pt-Ni alloy nanomaterial adopting the network structure.

Description

technical field [0001] The invention relates to an alloy nano material and a preparation method thereof. Background technique [0002] At present, as the energy crisis, environmental pollution and climate anomalies caused by the excessive development and use of traditional fossil fuels are becoming more and more serious, it is imminent to develop green, efficient and renewable new energy sources. Among the many new energy sources that are currently receiving attention, hydrogen energy has many advantages such as cleanness, no pollution, high calorific value, and renewable energy. It is regarded as an ideal and sustainable energy source and has received great attention from people. Recently, as hydrogen energy has gradually entered people's field of vision, hydrogen production by electrolysis of water has attracted the attention of scientists. Hydrogen production by electrolysis of water uses water as the basic raw material. During the process, no greenhouse gases will be ge...

Claims

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Application Information

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IPC IPC(8): B01J23/89B01J35/10C25B1/04C25B11/06
CPCC25B1/04C25B11/04B01J23/892B01J35/33B01J35/613Y02E60/36
Inventor 李志刚赵弘韬张楠李金凤
Owner TECHN PHYSICS INST HEILONGJIANG ACADOF SCI
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