Method for preparing zinc oxide material
A zinc oxide and raw material technology, applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problems of complex process control, poor particle uniformity, high temperature required for reaction, etc., and achieve good doping uniformity, low cost, and low reaction temperature Effect
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Embodiment 1
[0025] 1.1 Reagents, drugs and instruments
[0026] Instruments: Shimadzu AY220 electronic analytical balance, muffle furnace, XRD-6000X-ray powder diffractometer, NICOLETSXB Fourier transform infrared spectrometer, JSM-5510LV scanning electron microscope.
[0027] Reagents: zinc oxide (analytical grade, Tianjin Kemiou Chemical Reagent Development Center); urea (analytical grade, Sinopharm Chemical Reagent Co., Ltd.).
[0028] 1.2 Experimental process
[0029] Mix zinc oxide raw material and urea uniformly in a molar ratio of 1:4, add water to make a rheological state, the molar ratio of zinc oxide raw material to water {ZnO:H 2 O}=0.5, after grinding evenly, a slurry is obtained; the slurry is reacted at 300°C to form a jelly (transparent colloid); the jelly is hydrolyzed under high-speed stirring; the hydrolyzate is thermally decomposed at a temperature of 120°C to obtain white ZnO powder. At 4000~400cm -1 Record the IR spectrum of the hydrolyzate and thermal decompositi...
Embodiment 2
[0038] A preparation method of zinc oxide material, it comprises the steps:
[0039] 1) Selection of raw materials: according to the molar ratio of zinc oxide raw material to urea {ZnO:CO(NH 2 ) 2} is 0.33, the molar ratio of zinc oxide raw material to water {ZnO:H 2 O}=0.3, choose zinc oxide raw material, urea and water, standby;
[0040] 2) mixing the zinc oxide raw material, urea and water, and grinding the mixture evenly to obtain a slurry;
[0041] 3) Heating to gel: heating the slurry obtained in step 2) at 300°C to obtain a transparent gel;
[0042] 4) hydrolysis and thermal decomposition: the colloid obtained in step 3) is hydrolyzed (hydrolyzed with water) at room temperature, filtered to obtain a hydrolyzate containing urea, cyanamide and melamine (wherein cyanamide accounts for more than 70% of the mass fraction of the three products ); heating the filter residue at 120° C. to decompose to obtain a zinc oxide material.
Embodiment 3
[0044] A preparation method of zinc oxide material, it comprises the steps:
[0045] 1) Selection of raw materials: according to the molar ratio of zinc oxide raw material to urea {ZnO:CO(NH 2 ) 2} is 0.25, the molar ratio of zinc oxide raw material to water {ZnO:H 2 O}=0.3, choose zinc oxide raw material, urea and water, standby;
[0046] 2) mixing the zinc oxide raw material, urea and water, and grinding the mixture evenly to obtain a slurry;
[0047] 3) Heating to gel: heating the slurry obtained in step 2) at 300°C to obtain a transparent gel;
[0048]4) Thermal decomposition: heat the colloid obtained in step 3) to 420° C. and decompose to obtain a zinc oxide material.
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