Method for preparing nanometer Ni-Fe alloy by adopting quaternary ionic liquid microemulsion
A technology of ionic liquids and microemulsions, applied in the direction of nanotechnology, can solve problems such as poor conductivity and difficult electrochemical research, and achieve the effects of improving conductivity, improving electrodeposition efficiency, and improving catalytic performance
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Embodiment 1
[0030] 1. Preparation of quaternary ionic liquid microemulsion
[0031] After ultrasonically mixing the raw materials composed of the following mass percentages, sulfuric acid was added to control the pH value of the system to 3 to obtain a quaternary ionic liquid microemulsion:
[0032]
[0033] The above dissolved NiSO 4 and FeSO 4 NiSO in aqueous solution 4 and FeSO 4 The concentration is 0.075mol / L, that is, the NiSO in the water phase 4 and FeSO 4 The molar ratio is 5:5.
[0034] 2. Electrodeposition of nano-Ni-Fe alloy
[0035] After the copper sheet is polished, it is ultrasonically cleaned with dilute sulfuric acid, ethanol, and twice distilled water for 5 minutes. The copper sheet after cleaning is used as the working electrode, and two platinum electrodes are respectively used as the counter electrode and the reference electrode, and are put into the quaternary ionic liquid microemulsion prepared in step 1, and the deposition potential is controlled to be -...
Embodiment 2
[0037] In this example, after ultrasonically mixing the raw materials composed of the following mass percentages, sulfuric acid was added to control the pH value of the system to 3, and a quaternary ionic liquid microemulsion was obtained:
[0038]
[0039] The above dissolved NiSO 4 and FeSO 4 NiSO in aqueous solution 4 and FeSO 4 The concentration is 0.075mol / L, that is, the NiSO in the water phase 4 and FeSO 4 The molar ratio is 5:5.
[0040] Other steps are identical with embodiment 1, deposit one deck nano-Ni-Fe alloy on copper sheet, the particle diameter of nano-Ni-Fe alloy is 50nm (see Figure 4 ).
Embodiment 3
[0042] In this example, after ultrasonically mixing the raw materials composed of the following mass percentages, sulfuric acid was added to control the pH value of the system to 3, and a quaternary ionic liquid microemulsion was obtained:
[0043]
[0044] The above dissolved NiSO 4 and FeSO 4 NiSO in aqueous solution 4 and FeSO 4 The concentration is 0.075mol / L, that is, the NiSO in the water phase 4 and FeSO 4 The molar ratio is 5:5.
[0045] Other steps are identical with embodiment 1, deposit one deck nano-Ni-Fe alloy on copper sheet, the particle diameter of nano-Ni-Fe alloy is 20nm (see Figure 5 ).
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