High-performance gamma-Fe2O3 magnetofluid and preparation method thereof
A -fe2o3, high-performance technology, applied in the field of nanotechnology and material preparation, can solve the problems of complex process and high cost, and achieve the effect of simple production process, low product cost and good fluidity
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Embodiment 1
[0017] (1) Magnetic Fe 3 o 4 Preparation and Surface Modification of Nanoparticles
[0018] Prepare magnetic nanoparticles by chemical co-precipitation method, weigh 29g of FeCl 3 ·6H 2 O solid and 16 g of FeSO 4 ·7H 2 O powder, mix and dissolve it in 270ml of deionized water, then put it in a constant temperature water bath, keep the temperature at 70°C; after keeping it warm for 10 minutes, measure 63ml of 25-28% NH 3 ·H 2 O was quickly added to the beaker and kept stirring. After 11 minutes of reaction, 2.7g of sodium oleate powder was added, and the stirring was continued for 40 minutes to obtain black Fe 3 o 4 The turbid solution was left to stand under a magnetic field until it separated, the supernatant was removed, and the lower layer of Fe was washed several times with deionized water and acetone. 3 o 4 colloid; dried to Fe 3 o 4 magnetic nanoparticles;
[0019] (2) Magnetic γ-Fe 2 o 3 Preparation of nanoparticles
[0020] Fe will be produced 3 o 4 Th...
Embodiment 2
[0024] (1) Magnetic Fe 3 o 4 Preparation and Surface Modification of Nanoparticles
[0025] Prepare magnetic nanoparticles by chemical co-precipitation method, weigh 80g of FeCl 3 ·6H 2 O solid and 55 g of FeSO 4 ·7H 2 O powder, mix and dissolve it in 650ml of deionized water, then put it into a constant temperature water bath, keep the temperature at 80°C; after keeping it warm for 8 minutes, measure 180ml of 25-28% NH 3 ·H 2O was quickly added to the beaker and kept stirring. After 10 minutes of reaction, 29g of sodium oleate powder was added, and the stirring was continued for 60 minutes to obtain black Fe 3 o 4 The turbid solution was left to stand under a magnetic field until it separated, the supernatant was removed, and the lower layer of Fe was washed several times with deionized water and acetone. 3 o 4 colloid; dried to Fe 3 o 4 magnetic nanoparticles;
[0026] (2) Magnetic γ-Fe 2 o 3 Preparation of nanoparticles
[0027] Fe will be produced 3 o 4 Th...
Embodiment 3
[0031] (1) Magnetic Fe 3 o 4 Preparation and Surface Modification of Nanoparticles
[0032] Prepare magnetic nanoparticles by chemical co-precipitation method, weigh 55g of FeCl 3 ·6H 2 O solid and 25 g of FeSO 4 ·7H 2 O powder, mix and dissolve it in 470ml of deionized water, then put it into a constant temperature water bath, keep the temperature at 75°C; after 12 minutes of heat preservation, measure 120ml of 25-28% 3 ·H 2 O was quickly added to the beaker and kept stirring. After 8 minutes of reaction, 14g of sodium oleate powder was added, and the stirring was continued for 50 minutes to obtain black Fe 3 o 4 The turbid solution was left to stand under a magnetic field until it separated, the supernatant was removed, and the lower layer of Fe was washed several times with deionized water and acetone. 3 o 4 colloid; dried to Fe 3 o 4 magnetic nanoparticles;
[0033] (2) Magnetic γ-Fe 2 o 3 Preparation of nanoparticles
[0034] Fe will be produced 3 o 4 The...
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