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Preparing method and application of NiPS3 nanosheets of self-supporting structure
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A self-supporting structure, nanosheet technology, applied in chemical instruments and methods, electrodes, electrolysis processes, etc., can solve the problems of unsatisfactory HER performance, high synthesis temperature and time, and complicated preparation process, and achieve low cost, synthetic The effect of low temperature and simple equipment
Inactive Publication Date: 2019-05-21
HARBIN INST OF TECH
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However, at present, its preparation method is mainly completed by vacuum sealed tube sintering, the preparation process is complicated, the synthesis temperature and time are high, and the
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specific Embodiment approach 1
[0032] Specific implementation mode 1: NiPS with self-supporting structure in this implementation mode 3 The preparation method of nanosheet is realized according to the following steps:
[0033] 1. Ultrasonic cleaning of the carbon cloth to obtain the cleaned carbon cloth;
[0034] Two, according to stoichiometric ratio P:S=1:3 ratio red phosphorus powder and sublimation sulfur powder are mixed, obtain phosphorus sulfur powder mixture after grinding;
[0035] 3. Add nickel salt, urea and ammonium fluoride into ultrapure water and stir to dissolve to obtain a reaction solution;
[0036] 4. Immerse the cleaned carbon cloth into the reaction solution in step 3, and conduct a hydrothermal reaction at 100-160°C for 6-10 hours. After the reaction, take out the carbon cloth, wash and dry it to obtain the precursor;
[0037] 5. Pour the mixture of phosphorus and sulfur powder into the open reactor, put the open reactor and the precursor into the corundum boat together, cover the co...
specific Embodiment approach 2
[0039] Embodiment 2: This embodiment differs from Embodiment 1 in that in Step 1, the carbon cloth is ultrasonically cleaned with acetone, ethanol, and ultrapure water for 15-25 minutes respectively.
specific Embodiment approach 3
[0040] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the carbon cloth in step 1 is a hydrophilic hard carbon cloth.
[0041] In this embodiment, when the conductive carbon cloth is a hydrophobic carbon cloth, it needs to be hydrothermally treated with concentrated nitric acid at 120° C. for 4 hours to make it hydrophilic.
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Abstract
The invention discloses a preparing method and application of NiPS3 nanosheets of a self-supporting structure, and belongs to the technical field of preparation of nanometer materials and preparationof clean energy. The preparing method aims at solving the problems that when NiPS3 serves as an HER catalyst, the superficial area is small, and the temperature required in the preparing process is high. The preparing method comprises the steps of 1, conducting ultrasonic cleaning on carbon cloth; 2, mixing red phosphorus powder and sublimed sulfur powder, and obtaining a phosphorus and sulfur powder mixture after grinding; 3, adding nickel salt, urea and ammonium fluoride into ultrapure water for stirring and dissolution to obtain a reaction solution; 4, soaking the carbon cloth in the reaction solution for a hydrothermal reaction; 5, pouring the phosphorus and sulfur powder mixture into an open reactor, putting the open reaction and a precursor together into a corundum boat, firstly, adding the phosphorus and sulfur powder mixture to be fused, then conducting sublimation, and carrying out a reaction between phosphorus and sulfur steam and the precursor at high temperature. Accordingto the preparing method, the synthesis temperature is low, an NiPS3 nanosheet catalyst and a conductive substrate are compounded to be directly used as an HER electrode, and subsequent treatment is not needed.
Description
technical field [0001] The invention belongs to the technical field of nanomaterial preparation and clean energy preparation, and in particular relates to a NiPS 3 Preparation method and application of nanosheet material. Background technique [0002] With the development and progress of human society, the consumption of fossil energy and the resulting environmental pollution have become increasingly serious. In order to solve the energy and environmental problems faced by human beings, many renewable energy sources (eg, solar energy, wind energy, geothermal energy, hydrogen energy, etc.) have been extensively researched and utilized. Among them, hydrogen energy, as a new energy carrier with high combustion calorific value, clean and pollution-free, and various utilization forms, has received more and more attention. There are many ways to prepare hydrogen, among which hydrogen production by electrolysis of water causes the least environmental pollution and has become one ...
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