Summary of the invention
The interface preparation method that the purpose of this invention is to provide a kind of sheet zinc oxide.
The technical solution used in the present invention is:
A kind of interface preparation method of sheet zinc oxide may further comprise the steps:
1) in the aqueous solution of zinc salt, adds excess of ammonia water, add again promotor, obtain clear soln;
2) settled solution that step 1) is obtained is exposed in the air and leaves standstill, and forms film at liquid level;
3) take out step 2) the middle film that forms, washing, calcining gets sheet zinc oxide.
Zinc salt is 1:1-2 with the ratio of the amount of substance of promotor.
Described zinc salt is a kind of in zinc sulfate, zinc chloride, the zinc nitrate.
Described promotor is the salt of alkalescence for hydrolysis.
The temperature of calcining is 400-600 ℃.
The time of calcining is 2-6h.
The invention has the beneficial effects as follows: processing method of the present invention is simple, and reaction conditions is gentle, and environmentally friendly, green non-pollution need not special device, and is simple to operate, the products obtained therefrom substantially free of impurities.
Embodiment
A kind of interface preparation method of sheet zinc oxide may further comprise the steps:
1) in the aqueous solution of zinc salt, adds excess of ammonia water, add again promotor, obtain clear soln; Wherein, zinc salt is 1:1-2 with the ratio of the amount of substance of promotor, solute (NH in zinc salt and the ammoniacal liquor
3H
2O) mol ratio is preferably 1:9-12.
2) settled solution that step 1) is obtained is exposed in the air and leaves standstill, and forms film at liquid level;
3) take out step 2) the middle film that forms, washing, calcining gets sheet zinc oxide.
The present invention is described further below in conjunction with specific embodiment:
Embodiment 1:
Taking by weighing 2.8756g Zinc vitriol and 2.52g sodium sulphite anhydrous 99.3 is dissolved in respectively in the deionized water of 100ml, dripping 8ml concentration in solution of zinc sulfate is the ammoniacal liquor of 12mol/L, make zine ion all be converted into zinc ammonia complex, then sodium sulfite solution is added in the zinc ammonia solution, be exposed at last 2h in the air, after reaction finishes, pick up upper layer film with slide, use deionized water wash 5-6 time, in baking oven, dry, place 400 ℃ of calcinings of retort furnace 2h, get sheet zinc oxide.
Embodiment 2:
Taking by weighing 2.8756g Zinc vitriol and 1.26g sodium sulphite anhydrous 99.3 is dissolved in respectively in the deionized water of 100ml, dripping 8ml concentration in solution of zinc sulfate is the ammoniacal liquor of 12mol/L, make zine ion all be converted into zinc ammonia complex, then sodium sulfite solution is added in the zinc ammonia solution, be exposed at last 4h in the air, after reaction finishes, pick up upper layer film with slide, use deionized water wash 5-6 time, in baking oven, dry, place retort furnace 400 degree calcining 2h, get sheet zinc oxide.
Embodiment 3:
Taking by weighing six methylene radical four ammonia of 2.8756g Zinc vitriol and 2.8g is dissolved in respectively in the deionized water of 100ml, dripping 10ml concentration in solution of zinc sulfate is the ammoniacal liquor of 12mol/L, make zine ion all be converted into zinc ammonia complex, then sodium sulfite solution is added in the zinc ammonia solution, be exposed at last 4h in the air, after reaction finishes, pick up upper layer film with slide, use deionized water wash 5-6 time, in baking oven, dry, place retort furnace 400 degree calcining 2h, get sheet zinc oxide.
Embodiment 4:
Taking by weighing 2.8756g Zinc vitriol and 2.52g sodium sulphite anhydrous 99.3 is dissolved in respectively in the deionized water of 100ml, dripping 8ml concentration in solution of zinc sulfate is the ammoniacal liquor of 12mol/L, make zine ion all be converted into zinc ammonia complex, then sodium sulfite solution is added in the zinc ammonia solution, place water-bath, 20 ℃ of constant temperature also are exposed to 2h in the air, after reaction finishes, pick up upper layer film with slide, with deionized water wash 5-6 time, in baking oven, dry, place retort furnace 400 degree calcining 2h, get sheet zinc oxide.
Embodiment 5:
Taking by weighing 2.8756g Zinc vitriol and 2.52g sodium sulphite anhydrous 99.3 is dissolved in respectively in the deionized water of 100ml, dripping 8ml concentration in solution of zinc sulfate is the ammoniacal liquor of 12mol/L, make zine ion all be converted into zinc ammonia complex, then sodium sulfite solution is added in the zinc ammonia solution, place water-bath, 30 ℃ of constant temperature also are exposed to 2h in the air, after reaction finishes, pick up upper layer film with slide, with deionized water wash 5-6 time, in baking oven, dry, place retort furnace 400 degree calcining 2h, get sheet zinc oxide.
Embodiment 6:
Taking by weighing 2.8756g Zinc vitriol and 2.52g sodium sulphite anhydrous 99.3 is dissolved in respectively in the deionized water of 100ml, dripping 8ml concentration in solution of zinc sulfate is the ammoniacal liquor of 12mol/L, make zine ion all be converted into zinc ammonia complex, then sodium sulfite solution is added in the zinc ammonia solution, place water-bath, 40 ℃ of constant temperature also are exposed to 2h in the air, after reaction finishes, pick up upper layer film with slide, with deionized water wash 5-6 time, in baking oven, dry, place retort furnace 400 degree calcining 2h, get sheet zinc oxide.
Embodiment 7:
Taking by weighing 2.8756g Zinc vitriol and 2.52g sodium sulphite anhydrous 99.3 is dissolved in respectively in the deionized water of 100ml, dripping 8ml concentration in solution of zinc sulfate is the ammoniacal liquor of 12mol/L, make zine ion all be converted into zinc ammonia complex, then sodium sulfite solution is added in the zinc ammonia solution, place water-bath, 50 ℃ of constant temperature also are exposed to 2h in the air, after reaction finishes, pick up upper layer film with slide, with deionized water wash 5-6 time, in baking oven, dry, place retort furnace 400 degree calcining 2h, get sheet zinc oxide.
Embodiment 8:
Taking by weighing 2.8756g zinc sulfate and 2.52g sodium sulphite anhydrous 99.3 is dissolved in respectively in the deionized water of 100ml, dripping 8ml concentration in solution of zinc sulfate is the ammoniacal liquor of 12mol/L, make zine ion all be converted into zinc ammonia complex, then sodium sulfite solution is added in the zinc ammonia solution, place water-bath, 60 ℃ of constant temperature also are exposed to 2h in the air, after reaction finishes, pick up upper layer film with slide, with deionized water wash 5-6 time, in baking oven, dry, place retort furnace 400 degree calcining 2h, get sheet zinc oxide.
Embodiment 9:
Taking by weighing 2.8756g zinc sulfate and 2.52g sodium sulphite anhydrous 99.3 is dissolved in respectively in the deionized water of 100ml, dripping 8ml concentration in solution of zinc sulfate is the ammoniacal liquor of 12mol/L, make zine ion all be converted into zinc ammonia complex, then sodium sulfite solution is added in the zinc ammonia solution, place water-bath, 70 ℃ of constant temperature also are exposed to 2h in the air, after reaction finishes, pick up upper layer film with slide, with deionized water wash 5-6 time, in baking oven, dry, place retort furnace 400 degree calcining 2h, get sheet zinc oxide.
Embodiment 9:
Taking by weighing 2.8756g zinc sulfate and 2.48g sodium sulphite anhydrous 99.3 is dissolved in respectively in the deionized water of 100ml, dripping 8ml concentration in solution of zinc sulfate is the ammoniacal liquor of 12mol/L, make zine ion all be converted into zinc ammonia complex, then sodium sulfite solution is added in the zinc ammonia solution, place water-bath, 70 ℃ of constant temperature also are exposed to 2h in the air, after reaction finishes, pick up upper layer film with slide, with deionized water wash 5-6 time, in baking oven, dry, place retort furnace 400 degree calcining 3h, get sheet zinc oxide.
Embodiment 10:
Taking by weighing 2.8756g zinc sulfate and 2.12g sodium sulphite anhydrous 99.3 is dissolved in respectively in the deionized water of 100ml, dripping 8ml concentration in solution of zinc sulfate is the ammoniacal liquor of 12mol/L, make zine ion all be converted into zinc ammonia complex, then sodium sulfite solution is added in the zinc ammonia solution, place water-bath, at room temperature and be exposed to 2h in the air, after reaction finishes, pick up upper layer film with slide, with deionized water wash 5-6 time, in baking oven, dry, place retort furnace 400 degree calcining 3h, get sheet zinc oxide.
Can find out from X-ray diffractogram, diffraction peak has clearly appearred in the ZnO of embodiment 1 preparation, 31.72 °, the crystal face (100) of 34.4 °, 36.2 °, 47.56 °, 56.64 °, the 62.94 ° corresponding ZnO of difference, (002), (101), (102), (110), (103), substantially free of impurities, can find out from Fig. 2-8, the ZnO pattern of the present invention's preparation is regular, and size distribution is even.