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A kind of one-dimensional molybdenum phosphide nanorod and its preparation method and application

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 cost, and simple preparation process

Active Publication Date: 2021-05-11
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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  • A kind of one-dimensional molybdenum phosphide nanorod and its preparation method and application
  • A kind of one-dimensional molybdenum phosphide nanorod and its preparation method and application
  • A kind of one-dimensional molybdenum phosphide nanorod and its preparation method and application

Examples

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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 its preparation method and application. The preparation method comprises the following steps: uniformly dispersing molybdenum trioxide powder and adenine in deionized water to obtain a dispersion liquid, and carrying out the obtained dispersion liquid Hydrothermal reaction, after the reaction is completed, naturally cool to room temperature, centrifuge, wash, and dry to obtain a molybdenum trioxide-adenine ribbon precursor; combine the gained molybdenum trioxide-adenine ribbon precursor with sodium dihydrogen hypophosphite Perform phosphating reaction, cool to room temperature naturally, and obtain one-dimensional molybdenum phosphide nanorods. The invention obtains molybdenum phosphide nanorods composed of uniform nitrogen-doped nanoparticles, and has different crystal planes to provide a large number of surface active sites, thereby significantly improving the catalytic activity of the molybdenum phosphide. The preparation method of the invention is low in cost, easy to operate, green and non-polluting and non-toxic in raw materials, safe and simple in production process, 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 Patents(China)
IPC IPC(8): B01J27/19B01J27/24C25B11/075C25B1/04
CPCB01J27/19B01J27/24B01J35/0033C25B1/04C25B11/04Y02E60/36
Inventor 李强李雅琦董明东
Owner SHANDONG UNIV
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