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One-dimensional molybdenum phosphide nanorod and preparation method and application thereof

A technology of nanorods and molybdenum phosphide, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problems of difficult control of doping defects, poor material uniformity, cumbersome steps, etc., and achieve increased The effect of surface active sites, low production cost, and simple process

Active Publication Date: 2020-04-17
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the uniformity of the material prepared by the above method is poor, the doping defects are difficult to control, more raw materials are required, and the steps are cumbersome, which greatly limits its application in actual commercialization.

Method used

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  • One-dimensional molybdenum phosphide nanorod and preparation method and application thereof
  • One-dimensional molybdenum phosphide nanorod and preparation method and application thereof
  • One-dimensional molybdenum phosphide nanorod and preparation method and application thereof

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preparation example Construction

[0040] The preparation method of the chemically synthesized molybdenum trioxide in the embodiment is:

[0041] Ammonium heptamolybdate tetrahydrate ((NH 4 ) 6 Mo 7 o 24 4H 2 O) be dissolved in the HNO that mass fraction is 65% 3 In the mixed solvent of solution and deionized water, a mixed solution is obtained, and the mass fraction is 65% HNO 3 The volume ratio of solution and deionized water is 1:5, and the mass concentration of ammonium heptamolybdate tetrahydrate in the mixed solution is 35g / L; Above-mentioned mixed solution is transferred in the stainless steel autoclave that is lined with Teflon, and in Heating at 200°C for 20h. After cooling, the product was collected by centrifugation, washed with water and ethanol, and then dried at 70°C overnight to obtain the obtained product.

Embodiment 1

[0043] A method for preparing a one-dimensional molybdenum phosphide nanorod, comprising the following steps:

[0044] Evenly disperse 0.1g of commercially available molybdenum trioxide powder and 0.09g of adenine in 30mL of deionized water to obtain a dispersion, transfer the resulting dispersion to a reaction kettle, heat to 110°C for hydrothermal reaction for 12h, and naturally cool to room temperature Finally, centrifuge at 4000rpm for 5min, wash the obtained product three times with deionized water and ethanol, and then dry at 80°C for 12h to obtain the molybdenum trioxide-adenine ribbon precursor.

[0045] Put the molybdenum trioxide-adenine ribbon precursor and sodium dihydrogen hypophosphite into quartz tubes at a mass ratio of 1:10, and transfer them to a high-temperature tubular atmosphere furnace. The quartz tube filled with sodium dihydrogen hypophosphite Be placed on the upstream of the nitrogen gas flow, the quartz tube that is equipped with molybdenum trioxide-a...

Embodiment 2

[0057] A method for preparing a one-dimensional molybdenum phosphide nanorod, comprising the following steps:

[0058] Evenly disperse 0.1g of commercially available molybdenum trioxide powder and 0.09g of adenine in 30mL of deionized water to obtain a dispersion, transfer the resulting dispersion to a reaction kettle, heat to 110°C for hydrothermal reaction for 12h, and naturally cool to room temperature Finally, centrifuge at 4000rpm for 5min, wash the obtained product three times with deionized water and ethanol, and then dry at 80°C for 12h to obtain the molybdenum trioxide-adenine ribbon precursor.

[0059] Put the molybdenum trioxide-adenine ribbon precursor and sodium dihydrogen hypophosphite into quartz tubes at a mass ratio of 1:10, and transfer them to a high-temperature tubular atmosphere furnace. The quartz tube filled with sodium dihydrogen hypophosphite Be placed on the upstream of the nitrogen gas flow, the quartz tube that is equipped with molybdenum trioxide-a...

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Abstract

The invention provides a one-dimensional molybdenum phosphide nanorod and a preparation method and application thereof. The preparation method comprises the following steps: uniformly dispersing molybdenum trioxide powder and adenine in deionized water to obtain a dispersion liquid, subjecting the obtained dispersion liquid to a hydrothermal reaction, naturally cooling the dispersion liquid to room temperature after the reaction is completed, and successively conducting centrifugation, washing and drying to obtain a molybdenum trioxide-adenine strip-shaped precursor; and carrying out a phosphating reaction on the obtained molybdenum trioxide-adenine strip-shaped precursor and sodium dihydrogen hypophosphite, and carrying out natural cooling to room temperature to obtain the one-dimensional molybdenum phosphide nanorod. The molybdenum phosphide nanorod composed of uniform nitrogen-doped nanoparticles is obtained; meanwhile, the molybdenum phosphide nanorod has different crystal faces,so a large number of surface active sites are provided, and the catalytic activity of molybdenum phosphide is remarkably improved. The preparation method has the advantages of low cost, simple operation, usage of green, pollution-free and non-toxic raw materials, and safe and simple production flow, is suitable for industrial production, and has potential application value in the field of molybdenum phosphide and transition metal phosphide.

Description

technical field [0001] The invention relates to a one-dimensional molybdenum phosphide nanorod and its preparation method and application, belonging to the technical field of nano-catalysis materials. Background technique [0002] In recent years, due to environmental pollution and insufficient reserves of traditional energy sources such as oil and coal, people have been forced to explore green and clean energy, especially the carbon dioxide and sulfur dioxide released by the combustion of fossil fuels such as oil and coal have irreversible harm to the environment. , the pollution of the air is increasing day by day. Therefore, how to prepare clean energy with a simple, low-cost and low-energy method has become a hot topic in current research. [0003] Hydrogen, as a clean energy with zero carbon emissions, has been widely regarded as the most promising substitute for current traditional energy sources (such as fossil fuels). The current society's demand for the development...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/19B01J27/24C25B11/06C25B1/04
CPCB01J27/19B01J27/24C25B11/04C25B1/04B01J35/33Y02E60/36
Inventor 李强李雅琦董明东
Owner SHANDONG UNIV
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