Fireworks-shaped NiCo2O4 material composed of rods with necklace structure, as well as preparation method and application of fireworks-shaped NiCo2O4 material
A firework-shaped and necklace technology, applied in chemical instruments and methods, nickel compounds, inorganic chemistry, etc., can solve the problems of preparing firework-shaped without anionic and cationic surfactant systems, and achieve good product dispersibility, large output and simple operation. Effect
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[0033] In another typical embodiment of the present disclosure, the firework-shaped NiCo composed of rods with a necklace structure is provided. 2 o 4 The preparation method of material, this preparation method comprises the following steps:
[0034] Using β-CD as a structure-directing agent, the aggregation state of anionic and cationic surfactants is controlled by adjusting the amount of cyclodextrin in the solvent, using the aggregates of anionic and cationic surfactants as a soft template, and Ni(NO 3 ) 2 ·6H 2 O, Co(NO 3 ) 2 ·6H 2 Firework-like NiCo 2 o 4 Material.
[0035] This application screens out SDS as an anionic surfactant and CTAB as a cationic surfactant. Compared with other surfactants, these two substances can form ordered aggregates in water, and using this as a soft template can be more Effectively control the morphology, structure and size of the product.
[0036] Different nickel sources and cobalt sources have different influences on the morphol...
Embodiment 1
[0055] Place a 100mL beaker on a magnetic stirrer, add 35mL distilled water and heat up to 35°C, add 0.612g CTAB and 0.3g SDS to the solution under stirring, after stirring to form a homogeneous solution, add 0.4gβ-CD and stir for 12h. After 12h, 0.58g Ni(NO 3 ) 2 ·6H 2 O, 1.164g Co(NO 3 ) 2 ·6H 2 O and 0.36g urea were stirred for 1h. After 1h, the obtained pink suspension was transferred to a 100mL reactor, and placed in a thermostat at 160°C for 6h. The purple precipitate obtained after cooling and centrifugation was washed repeatedly with distilled water. The obtained precipitate was dried at 60 °C for 12 h, and then the precipitate was calcined in a tubular calciner at 350 °C for 2 h to obtain a fireworks-like NiCo composed of rods with a necklace structure. 2 o 4 materials such as figure 1 As shown, the fireworks-like NiCo 2 o 4 The diameter of the material is about 1 μm, and it is composed of nanorods with a necklace structure. 2 o 4 The particle diameter is...
Embodiment 2
[0058] Place a 100mL beaker on a magnetic stirrer, add 35mL distilled water and heat up to 35°C, add 0.612g CTAB and 0.3g SDS to the solution under stirring, after stirring to form a homogeneous solution, add 0.6gβ-CD and stir for 12h. After 12h, 0.58g Ni(NO 3 ) 2 ·6H 2 O, 1.164g Co(NO 3 ) 2 ·6H 2 O and 0.36g urea were stirred for 1h. After 1h, the obtained pink suspension was transferred to a 100mL reactor, and placed in a thermostat at 160°C for 6h. The purple precipitate obtained after cooling and centrifugation was washed repeatedly with distilled water. The obtained precipitate was dried at 60 °C for 12 h, and then the precipitate was calcined in a tubular calciner at 350 °C for 2 h to obtain a fireworks-like NiCo rod composed of a necklace structure. 2 o 4 materials such as Figure 4 As shown, the prepared fireworks-like NiCo 2 o 4 The material is composed of nanorods with a necklace structure, the nanorods are 350-750nm long, and the NiCo that forms the necklac...
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