Multi-duct transition metal phosphide carbon nanotube composite material and preparation method and application based on small molecule regulation

A technology of carbon nanotubes and transition metals, applied in phosphating, electrolysis, electrodes, etc., can solve the problems of high cost of hydrogen production catalysts for electrolysis of water, restrictions on large-scale use, and lack of platinum resources, etc., to achieve easy large-scale production , controllable size and high current density

Inactive Publication Date: 2018-04-20
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, platinum or platinum alloys are commonly used cathode catalysts for electrolyzing water to produce hydrogen. However, platinum resources are relatively scarce in nature and are expensive, resulting in high costs for electrolyzing water to produce hydrogen, which limits its large-scale use in industrial production.

Method used

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  • Multi-duct transition metal phosphide carbon nanotube composite material and preparation method and application based on small molecule regulation
  • Multi-duct transition metal phosphide carbon nanotube composite material and preparation method and application based on small molecule regulation
  • Multi-duct transition metal phosphide carbon nanotube composite material and preparation method and application based on small molecule regulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1: Cobalt phosphide / carbon nanotube composite material (CoP / CNTs-Ph 3 P)

[0042] (1) Electrode pretreatment: Take a glassy carbon electrode (Shanghai Chenhua, CHI104, 3mm in diameter), and perform polishing, water washing, and 20KHz ultrasonic pretreatment for 30s in sequence;

[0043] (2) Preparation of a glassy carbon electrode modified by a mixture of carbon nanotubes and triphenylphosphine: Add the mixture of arrayed carbon nanotubes (2 mg) and triphenylphosphine (2 mg) to a mixture of ethanol and water at a volume ratio of 1:1 ( 1mL), ultrasonically at 40KHz for 2h to form a suspension, which was dropped onto the surface of the glassy carbon electrode pretreated in step (1), and dried naturally to form a uniform thin mixture of carbon nanotubes and triphenylphosphine. layer (the thin layer is about 40 μg of carbon nanotubes), to obtain a glassy carbon electrode modified by a mixture of carbon nanotubes and triphenylphosphine;

[0044] (3) Preparation of el...

Embodiment 2

[0047] Example 2: Preparation of Porous Cobalt Phosphide / Carbon Nanotube Composite (CoP / CNTs-PF) by Small Molecule Tris(4-fluorophenyl)phosphine

[0048] (1) Electrode pretreatment: Take a glassy carbon electrode (Shanghai Chenhua, CHI104, 3mm in diameter), and perform polishing, water washing, and 20KHz ultrasonic pretreatment for 30s in sequence;

[0049] (2) Preparation of glassy carbon electrode modified by mixture of carbon nanotubes and tris(4-fluorophenyl)phosphine: add the mixture of arrayed carbon nanotubes (2mg) and tris(4-fluorophenyl)phosphine (2mg) to ethanol and In the mixed solution (1mL) with a water volume ratio of 1:1, a suspension was formed by ultrasonication at 40KHz for 2 hours, and the suspension was added dropwise to the surface of the glassy carbon electrode pretreated in step (1), and dried naturally to form a uniform A thin layer of carbon nanotubes and tris(4-fluorophenyl)phosphine mixture (the thin layer is about 40 μg of carbon nanotubes), to obta...

Embodiment 3

[0054] Example 3: Preparation of porous phosphide / carbon nanotube composites (CoNiP / CNTs-Ph 3 PBH 3 )

[0055] (1) Electrode pretreatment: Take a glassy carbon electrode (Shanghai Chenhua, CHI104, 3mm in diameter), and perform polishing, water washing, and 20KHz ultrasonic pretreatment for 30s in sequence;

[0056] (2) Prepare a glassy carbon electrode modified by a mixture of carbon nanotubes and triphenylphosphine borane: add a mixture of arrayed carbon nanotubes (2 mg) and triphenylphosphine borane (1 mg) to ethanol and water at a volume ratio of 1:1 In the mixed solution (1mL), 40KHz ultrasonic 2h forms suspension liquid, this suspension liquid is added dropwise on the surface of the glassy carbon electrode pretreated by step (1), and naturally dries to form uniform carbon nanotube and triphenyl A thin layer of a mixture of base phosphine borane (the thin layer is about 40 μg of carbon nanotubes), to obtain a glassy carbon electrode modified by a mixture of carbon nanotu...

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Abstract

The invention provides a multi-duct transition metal phosphide carbon nanotube composite material and a preparation method and application based on small molecule regulation. A mixture of carbon nanotubes and small molecules is added into a solvent, ultrasound treatment is carried out to form turbid liquid to be dropwise added into a pretreated glassy carbon electrode surface, natural drying is carried out to form even carbon nanotube thin layers, and a glassy carbon electrode modified with the mixture of the carbon nanotubes and the small molecules is obtained; phosphate and transition metalsalt are added into deionized water, electrolyte is supported, sulfuric acid is used for adjusting pH to be 0-13, and electroplate liquid is obtained; and the glassy carbon electrode modified with themixture of the carbon nanotubes and the small molecules is placed into the electroplate liquid to be electroplated, washing with water is carried out, natural drying is carried out at the normal temperature, and a blade is used for scrapping a prepared composite material from the surface of the glassy carbon electrode, and the final product is obtained. The method is easy to operate, the preparedcomposite material has the great advantages in the aspects of catalytic hydrolysis separation and energy conversion, and the product and the preparation method can be applied to the field of electro-catalysis water decomposition hydrogen production and photovoltaic conversion.

Description

technical field [0001] The invention belongs to the research field of nanocomposite materials, and in particular relates to a transition metal phosphide carbon nanotube composite material passing through porous channels, its preparation method and application based on small molecule regulation, and its application research as an electrocatalyst. Background technique [0002] Traditional fossil energy, as a non-renewable energy, is facing a major crisis of resource depletion, and the use of fossil energy has brought a series of environmental problems. Therefore, in order to achieve sustainable development, maintain and create a healthy ecological environment, many countries in the world have begun to devote themselves to the development and utilization of new energy, such as solar energy, nuclear energy, wind energy, hydrogen energy, etc. Among them, hydrogen energy may become the most ideal energy source. The reason is that in the case of burning the same weight of coal and...

Claims

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Application Information

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IPC IPC(8): C25D11/36C25B11/06C25B1/02
CPCC25B1/02C25D11/36C25B11/091
Inventor 聂华贵葛梦展杨植沈娟霞侯俊婕詹迎新黄少铭
Owner WENZHOU UNIVERSITY
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