Preparation method and application of ZnO/ZnFe2O4 nano-composites
A nanocomposite material, zinc ferrite technology, applied in chemical instruments and methods, nanotechnology, nanotechnology, etc., can solve the problems of inability to meet green chemistry, numerous operation steps, and inappropriate preparation in large quantities, and achieve good sensitivity, raw materials, etc. The effect of easy availability and short response time
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[0020] Example 1
[0021] Preparation of zinc-iron Prussian blue analogue nanomaterials
[0022] Dissolve zinc nitrate (0.089g, 0.3mmol) in 50mL deionized water to form solution A, add potassium ferricyanide (0.066g, 0.2mmol) and sodium dodecylbenzene sulfonate (0.05g) into 50mL deionized water A clear solution B is formed. Add solution A dropwise to solution B under stirring. After dripping, continue to stir for half an hour, age in the dark for 3 days, centrifuge, wash with water and ethanol, and collect the yellow precipitate at the bottom of the beaker; Drying in a vacuum drying oven at 60°C for 18 hours to obtain zinc-iron Prussian blue analog nanomaterials.
Example Embodiment
[0023] Example 2
[0024] Preparation of zinc-iron Prussian blue analogue nanomaterials
[0025] Dissolve zinc chloride (0.041g, 0.3mmol) in 50mL deionized water to form solution A, add potassium ferricyanide (0.066g, 0.2mmol) and polyvinylpyrrolidone (0.08g) into 50mL deionized water to form a clear solution B. Add solution A to solution B dropwise with stirring, continue stirring for half an hour after the completion of the drop, age for 4 days in the dark, centrifuge, wash with water and ethanol, and collect the yellow precipitate at the bottom of the beaker. After washing with deionized water or ethanol, it is placed in a vacuum drying oven at 80° C. and dried for 24 hours to obtain zinc-iron Prussian blue analog nanomaterials.
[0026] Use X-ray powder diffractometer to analyze and confirm the structure, such as figure 1 The zinc iron Prussian blue analogue nanomaterial is Zn 3 [Fe(CN) 6 ] 2 ·XH 2 O.
[0027] The morphology of the obtained zinc-iron Prussian blue analogue nanoma...
Example Embodiment
[0028] Example 3
[0029] Preparation of ZnO / ZnFe 2 O 4 Nanocomposite
[0030] The 20 mg zinc-iron Prussian blue analog nanomaterial in Example 1 or Example 2 was weighed into a crucible, placed in a muffle furnace, and calcined at high temperature in an air atmosphere. The calcination temperature is 450°C, the heating rate is 2°C / min, and the calcination time is 3h.
[0031] Use X-ray powder diffractometer to analyze and confirm the structure, such as figure 2 The composition of the composite material shown is ZnO / ZnFe 2 O 4 Nanocomposite materials.
[0032] Characterization of ZnO / ZnFe by scanning electron microscope 2 O 4 The morphology of the nanocomposite. Such as figure 2 As shown, the resulting ZnO / ZnFe 2 O 4 The nanocomposite has a hollow spherical structure with a rough surface.
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