SiO2/TiO2 hollow compound structural material as well as preparation method and uses thereof
A composite structure and hollow technology, which is applied in the field of inorganic nanomaterial preparation, can solve the problems of application limitations and achieve the effects of improved utilization rate, simple manufacturing method and superior performance
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[0036] Example 1:
[0037] A kind of SiO 2 / TiO 2 The hollow composite structure material is prepared by the following steps,
[0038] 1) Preparation of carbon nanospheres
[0039] Weigh 4 parts by weight of glucose, dissolve it in 40 parts by volume of water, transfer it into a stainless steel reactor lined with polytetrafluoroethylene, seal the reactor, and place it in a 160℃ resistance furnace for 12 hours. After the reaction is completed, cool naturally To room temperature, pour out the product in the kettle, centrifuge for 3 minutes at a rotation speed of 10,000 rpm, take the precipitate, wash three times with deionized water and absolute ethanol, and dry in vacuum at 60°C for 4 hours to obtain a particle size of 200nm Monodisperse carbon nanospheres;
[0040] 2) Carbon nanospheres are coated with silica
[0041] Weigh 0.05 parts by weight of the carbon nanospheres prepared in step (1), and disperse them in a solution mixed with 20 parts by volume of ethanol and 4 parts by vo...
Example Embodiment
[0046] Example 2:
[0047] A kind of SiO 2 / TiO 2 The application of hollow composite structure material is prepared into SiO by the following method 2 / TiO 2 Hollow composite structure material film to achieve:
[0048] 1) SiO 2 / TiO 2 Preparation of hollow composite structure material film
[0049] SiO prepared from Example 1 2 / TiO 2 The hollow composite structure material is ultrasonically dispersed in water to prepare a solution with a mass fraction of 0.4%, and a common glass slide is used as a substrate to prepare a thin film by a vertical pulling method.
[0050] 2) Anneal the film produced by step 1) at 450℃ for 1h to obtain SiO 2 / TiO 2 Hollow composite structure material film.
Example Embodiment
[0051] Example 3:
[0052] A kind of SiO 2 / TiO 2 The hollow composite structure material is prepared by the following steps,
[0053] 1) Preparation of carbon nanospheres
[0054] Weigh 8 parts by weight of glucose, dissolve it in 40 parts by volume of water, transfer it into a stainless steel reactor lined with polytetrafluoroethylene, close the reactor, and place it in a 200℃ resistance furnace for 4 hours. After the reaction is completed, cool naturally To room temperature, pour out the product in the kettle, centrifuge for 3 minutes at a rotation speed of 10,000 rpm, take the precipitate, wash three times with deionized water and absolute ethanol, and dry in vacuum at 60°C for 4 hours to obtain a particle size of 200nm Monodisperse carbon nanospheres;
[0055] 2) Carbon nanospheres are coated with silica
[0056] Weigh 0.1 parts by weight of the carbon nanospheres prepared in step (1), and disperse them in a solution mixed with 40 parts by volume of ethanol and 8 parts by vol...
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