Ternary Cu-Co-P (copper-cobalt-phosphor) nanorod as well as preparation method and application thereof
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A cu-co-p, nanorod technology, applied in chemical instruments and methods, electrodes, electrolysis process, etc., to achieve the effect of simple preparation process and low cost
Inactive Publication Date: 2018-07-27
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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[0004] In order to solve the technical problem that the transition metal phosphides used as non-noble metal catalysts for electrolyzed water hydrogen production in the prior art can only be applied to the electrolyte environment with a narrow pH value, the present invention provides a ternary Cu-Co- P nanorods and their preparation metho
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[0026] A method for preparing ternary Cu-Co-P nanorods includes the following steps:
[0027] Step A. Mix copper nitrate, cobalt nitrate, urea, and ammonium fluoride in water so that the concentration of copper nitrate in the mixed solution is 0.2-1.0 mmol / L and the concentration of cobalt nitrate is 5.0-6.0 mmol / L. The urea concentration is 15.0-25.0 millimoles / liter and the ammonium fluoride concentration is 6.0-10.0 millimoles / liter, thereby preparing the precursor mixed solution.
[0028] Step B. Place the substrate in the precursor mixed solution, and transfer the substrate and the precursor mixed solution to an autoclave, and then react at 100-120°C for 480-600 minutes, so as to CuCo-LDH nanorods are prepared on the substrate.
[0029] Step C. Dry the substrate and the CuCo-LDH nanorods on the substrate, and then combine the dried substrate with the CuCo on the substrate according to the mass ratio of the precursor mixture solution: sodium hypophosphite = 1:20 -The LDH nanoro...
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[0038] Example 1
[0039] A method for preparing ternary Cu-Co-P nanorods includes the following steps:
[0040] Step a. Mix copper nitrate, cobalt nitrate, urea, and ammonium fluoride in water so that the concentration of copper nitrate in the mixed solution is 0.6 mmol / L, the concentration of cobalt nitrate is 6.0 mmol / L, and the urea concentration is 20.0 The concentration of ammonium fluoride was 8.0 mmol / L, and the precursor mixed solution was prepared.
[0041] Step b. Using carbon cloth (CC) with a size of 1×4 cm as a substrate, place the substrate in the precursor mixture solution, and transfer the substrate and the precursor mixture solution to a 50 mL autoclave together , And then reacted at 110°C for 480 minutes to prepare CuCo-LDH nanorods on the substrate.
[0042] Step c. Dry the substrate and the CuCo-LDH nanorods on the substrate, and then combine the dried substrate with the CuCo on the substrate according to the mass ratio of the precursor mixture solution: sodium h...
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Abstract
The invention discloses a ternary Cu-Co-P (copper-cobalt-phosphor) nanorod as well as a preparation method and application thereof. The preparation method comprises the following steps of mixing copper nitrate, cobalt nitrate, urea and ammonia fluoride in water, so as to prepare a precursor mixed solution; placing a substrate into the precursor mixed solution, reacting for 480 to 600min in a high-pressure kettle at the temperature of 100 to 120 DEG C, and preparing a CuCo-LDH (hydrotalcite) nanorod on the substrate; placing the dried substrate and the CuCo-LDH nanorod into a ceramic boat withsodium hypophosphite; transferring into a tubular furnace, and heating for 0.5 to 2h at the temperature of 300 to 350 DEG C, so as to obtain the ternary Cu-Co-P nanorod. The ternary Cu-Co-P nanorod can be directly used as a working electrode for electrochemically decomposing water. The ternary Cu-Co-P nanorod has the advantages that compared with the existing transition metal phosphide, the waterhydrolyzing catalyzing cavity is higher in the pH (potential of hydrogen) electrolytes; the cost is low, the preparation technology is simple, the environment-friendly and non-pollution effects are realized, and the ternary Cu-Co-P nanorod is suitable for large-scale industrialized production.
Description
technical field [0001] The invention relates to the field of transition metal phosphide nanomaterials, in particular to a ternary Cu-Co-P nanorod and its preparation method and application. Background technique [0002] Fossil fuels are non-renewable resources with limited reserves, and excessive use will cause air pollution and exacerbate global warming. Therefore, it is urgent to find clean and sustainable energy that can replace fossil fuels. Wind energy, solar energy, tidal energy, geothermal energy, and biomass energy are all new energy sources that can replace fossil fuels, but these energy sources are greatly affected by elements such as regions and weather, and their stability is not high. Due to its high content and wide distribution, hydrogen energy is considered to be the main energy source for human beings instead of fossil fuels. At present, the main ways to produce hydrogen in industry are: steam reforming of methane, coal gasification and electrolysis of wate...
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