Preparation method of highly-ordered nano particle superlattice material
A nanoparticle and superlattice technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as weak interaction, limited application, and influence on electron transport capacity, and achieve improved Mutual coupling effect, enhanced coupling effect, and easy preparation method
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Embodiment 1
[0032] (1) Fe 3 o 4 Preparation of nanoparticles: 36 g iron oleate and 5.7 g oleic acid were dissolved in 200 g octadecene, and reacted at 320 °C for 30 min under nitrogen protection to obtain Fe with a particle size of 11 nm 3 o 4 For nanoparticles, ethanol was added to precipitate the nanoparticles, and after centrifugation, the resulting nanoparticles were dissolved in n-hexane to form a concentration of ~10 mg mL -1 stable colloidal solution.
[0033] (2) Oleic acid coated Fe 3 o 4 Preparation of nanoparticle superlattice: the obtained Fe 3 o 4 The nanoparticle colloidal solution was placed in a porcelain boat, and the n-hexane was naturally volatilized at room temperature to obtain highly ordered oleic acid-coated Fe 3 o 4 Nanoparticle superlattice.
[0034] (3) Carbon coated Fe 3 o 4 Fabrication of Nanoparticle Superlattices: Coating Fe with Oleic Acid 3 o 4The nanoparticle superlattice material is transferred to a tube furnace and calcined at 500°C for 2 ho...
Embodiment 2
[0037] (1) Fe 3 o 4 Preparation of nanoparticles: 36 g iron oleate and 8.55 g oleic acid were dissolved in 200 g octadecene, and reacted at 320 °C for 30 min under nitrogen protection to obtain Fe with a particle size of about 14 nm. 3 o 4 Nanoparticles.
[0038] (2) Oleic acid coated Fe 3 o 4 Preparation of nanoparticle superlattice: Same as Example 1.
[0039] (3) Preparation of highly ordered mesoporous carbon material: same as Example 1.
[0040] (4) Preparation of highly ordered carbon nanoparticle superlattice material: Immerse 0.1 g of the obtained mesoporous carbon material in sucrose aqueous solution (1 M), add 0.1 g of concentrated sulfuric acid, stir for 6 h, and centrifuge the mesoporous carbon Separated and dried in a vacuum oven at 80 °C for 1 h, the process of impregnation, centrifugation, and drying was repeated twice, and reacted at 500 °C for 30 min under nitrogen protection to promote the carbonization of sucrose and obtain carbon nanoparticle superlat...
Embodiment 3
[0042] (1) Fe 3 o 4 Preparation of nanoparticles: 36 g iron oleate and 5.7 g oleic acid were dissolved in 200 g hexadecene, and reacted at 280 °C for 30 min under nitrogen protection to obtain Fe with a particle size of about 10 nm. 3 o 4 Nanoparticles.
[0043] (2) Oleic acid coated Fe 3 o 4 Preparation of nanoparticle superlattice: Same as Example 1.
[0044] (3) Preparation of highly ordered mesoporous carbon material: same as Example 1.
[0045] (4) Preparation of highly ordered silica nanoparticle material: immerse 0.1 g of mesoporous carbon material in ethanol solution (1 M) of ethyl orthosilicate, stir for 6 h, and separate mesoporous carbon by centrifugation Come out, drop two drops of ammonia solution to hydrolyze the tetraethyl orthosilicate, repeat the process of dipping, centrifuging, and hydrolysis twice to obtain a silica nanoparticle superlattice material.
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