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Method for synthesizing ultrafine ternary cobalt molybdenum phosphorus nanorod

A technology of cobalt molybdenum phosphorus and nanorods, which is applied in the field of preparation of ternary nanocrystals, achieving the effects of simple process, good sample crystallinity and high repeatability

Inactive Publication Date: 2017-11-03
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far, there has been no report on the preparation of ultrafine (diameter less than 5nm) ternary cobalt molybdenum phosphorus nanorods. Therefore, it is necessary to develop a simple method to prepare ultrafine (diameter less than 5nm) ternary cobalt molybdenum phosphorus Nanorods, extending and optimizing the catalytic properties of materials

Method used

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  • Method for synthesizing ultrafine ternary cobalt molybdenum phosphorus nanorod
  • Method for synthesizing ultrafine ternary cobalt molybdenum phosphorus nanorod
  • Method for synthesizing ultrafine ternary cobalt molybdenum phosphorus nanorod

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Embodiment 1

[0027] Example 1 Synthesis of ultrafine ternary cobalt-molybdenum-phosphorus nanorods with an atomic ratio of 1:0.08:0.9

[0028] The synthesis of ultrafine ternary cobalt-molybdenum-phosphorus nanorods with an atomic ratio of 1:0.08:0.9 was carried out in a Schlenk system. The synthesis process required nitrogen protection. The specific synthesis process was as follows: 0.052g of cobalt chloride and 6mL of oleylamine were packed into the three-necked bottle, then plug the two sides of the three-necked bottle with rubber stoppers, connect the middle port to the Schlenk system, insert the thermocouple from one side of the three-necked bottle under the liquid surface, stir and heat to 120 °C, a clear blue solution was obtained, 2 mL of trioctylphosphine (1.66 g) was added, stirred and heated to 300 °C until a uniform black solution was obtained, which was designated as solution a. In a glove box under nitrogen protection, put 0.0546g of molybdenum pentachloride and 5mL of oleyla...

Embodiment 2

[0030] Embodiment 2 Atomic ratio 1:0.27:0.52 synthesis of ultrafine ternary cobalt-molybdenum-phosphorus nanorods

[0031] The synthesis of ultrafine ternary cobalt-molybdenum-phosphorus nanorods with an atomic ratio of 1:0.27:0.52 was carried out in a Schlenk system. The synthesis process required nitrogen protection. The specific synthesis process was as follows: 0.052g of cobalt chloride and 6mL of oleylamine were packed into the three-necked bottle, then plug the two sides of the three-necked bottle with rubber stoppers, connect the middle port to the Schlenk system, insert the thermocouple from one side of the three-necked bottle under the liquid surface, stir and heat to 120 °C, a clear blue solution was obtained, 2 mL of trioctylphosphine (1.66 g) was added, stirred and heated to 300 °C until a uniform black solution was obtained, which was designated as solution a. In a glove box under nitrogen protection, put 0.0546g of molybdenum pentachloride and 5mL of oleylamine i...

Embodiment 3

[0033] Example 3 Ternary CoMo 0.08 P 0.9 and CoMo 0.27 P 0.52 Electrochemical Properties of Nanorods

[0034] The polarization curves of the ternary cobalt-molybdenum-phosphorus nanorod samples of different components prepared in embodiment 1 and embodiment 2 are as follows Figure 15-16 Shown, can find out that sample has very high catalytic activity by accompanying drawing. Figure 15 Ultrafine ternary CoMo 0.08 P 0.9 The polarization curve of nanorods shows that the hydrogen evolution reaction overpotential is 170mV. Figure 16 Ultrafine ternary CoMo 0.27 P 0.52 Polarization curve of nanorods, hydrogen evolution reaction overpotential is 180mV. This shows that the ultrafine ternary cobalt-molybdenum-phosphorus nanorods with different components prepared by the method of the present invention exhibit good electrocatalytic hydrogen production performance.

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Abstract

The invention discloses a method for synthesizing an ultrafine ternary cobalt molybdenum phosphorus nanorod and belongs to the technical field of preparation of nanomaterials. The ultrafine ternary cobalt molybdenum phosphorus nanorod is synthesized from cobalt chloride, molybdenum pentachloride and trioetylphosphine as raw materials according to the mass ratio of 0.052 to 0.0546 to 1.66 and oleylamine as a ligand by adopting a solvothermal method. A sample prepared by the preparation method disclosed by the invention has the advantages of high phase purity, high crystallinity and uniform particle size distribution; and the preparation method has the advantages of simple process, controllable morphology and aspect ratio, high repeatability and the like.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, in particular to a method for preparing ternary nanocrystals. Background technique [0002] In recent years, with the increasing shortage of non-renewable fossil fuels and the impact of carbon-based energy materials on the environment and climate, energy crisis and environmental pollution have become global concerns. As a new type of clean energy, hydrogen can well solve the current energy and environmental crisis facing the world. Water electrolysis using transition metal phosphide nanomaterials as catalysts is currently an effective method for hydrogen production. As materials with high hydrogen evolution activity, cobalt phosphide and molybdenum phosphide nano-semiconductor materials have aroused extensive research interests of scientists at home and abroad. So far, researchers have tuned the hydrogen evolution properties of cobalt phosphide and molybdenum phosphide nanomate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/08B82Y40/00
CPCC01B25/088C01P2004/03C01P2004/04C01P2004/16C01P2004/64C01P2006/40
Inventor 杨新一王艺璇邹勃
Owner JILIN UNIV
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