Preparation method and application of magnetic heterogeneous photo-Fenton NiFe2O4/ZnO composite nano material
A composite nanomaterial, magnetic technology, applied in chemical instruments and methods, light water/sewage treatment, water/sludge/sewage treatment, etc. , to achieve the effect of good reusability, short time-consuming and high processing efficiency
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Embodiment 1
[0025] A Magnetic Out-of-Phase Photo-Fenton NiFe 2 o 4 The preparation method of / ZnO composite nano material, it comprises the following steps:
[0026] Ⅰ)NiFe 2 o 4 Preparation of:
[0027] (1) Weigh nickel chloride hexahydrate and ferric chloride hexahydrate respectively according to the molar ratio of iron and nickel being 2:1, dissolve them in deionized water, and ultrasonically treat them for 60 minutes, and stir them magnetically for 30 minutes;
[0028] (2) Heating the mixed solution to 90° C. for 3 hours, adding dropwise sodium hydroxide solution to the mixed solution to adjust the pH value to 13;
[0029] (3) Transfer the heated solution to a polytetrafluoroethylene-lined stainless steel autoclave, put the autoclave into a muffle furnace, heat it up to 600°C in a sealed manner with a temperature increase of 3°C per minute, and keep it warm for 3h;
[0030] (4) The powder solid obtained after heating is separated in a magnetic field, and then the magnetic powder i...
Embodiment 2
[0039] Ⅰ)NiFe 2 o 4 Preparation of:
[0040] (1) Weigh nickel chloride hexahydrate and ferric chloride hexahydrate respectively according to the molar ratio of iron and nickel being 2:1.5, dissolve them in deionized water, and ultrasonically treat them for 60 minutes, and magnetically stir for 30 minutes;
[0041] (2) Heating the mixed solution to 80° C. for 3.5 hours, adding sodium hydroxide solution dropwise to the mixed solution to adjust the pH value to 14;
[0042] (3) Transfer the heated solution to a polytetrafluoroethylene-lined stainless steel autoclave, put the autoclave into a muffle furnace, heat up to 800°C in a sealed manner with a temperature rise of 3°C per minute, and keep it warm for 2.5h;
[0043] (4) The powder solid obtained after heating is separated in a magnetic field, and then the magnetic powder is washed and dried to obtain a magnetic heterogeneous photo-Fenton catalyst NiFe 2 o 4 ;
[0044] Ⅱ)NiFe 2 o 4 / ZnO magnetic composite preparation:
...
Embodiment 3
[0050] Ⅰ)NiFe 2 o 4 Preparation of:
[0051] (1) Weigh nickel chloride hexahydrate and ferric chloride hexahydrate respectively according to the molar ratio of iron and nickel being 2:1, dissolve them in deionized water, and ultrasonically treat them for 60 minutes, and stir them magnetically for 30 minutes;
[0052] (2) Heating the mixed solution to 100° C. for 2.5 hours, adding sodium hydroxide solution dropwise to the mixed solution to adjust the pH value to 10;
[0053] (3) Transfer the heated solution to a polytetrafluoroethylene-lined stainless steel autoclave, put the autoclave into a muffle furnace, heat up to 700°C in a closed manner with a temperature increase of 3°C per minute, and keep it warm for 3h;
[0054] (4) The powder solid obtained after heating is separated in a magnetic field, and then the magnetic powder is washed and dried to obtain a magnetic heterogeneous photo-Fenton catalyst NiFe 2 o 4 ;
[0055] Ⅱ)NiFe 2 o 4 / ZnO magnetic composite preparati...
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