A three-dimensional ordered macroporous calcium titanate photonic crystal constructed of porous nanosheets and its synthesis method
A three-dimensional ordered, porous calcium titanate technology, applied in titanate, titanium compounds, chemical instruments and methods, etc., can solve the problem of unutilized lamella structure, achieve excellent photocatalytic performance, mild reaction conditions, Ease of promotion
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Embodiment 1
[0042] A three-dimensional ordered macroporous calcium titanate photonic crystal constructed of porous nanosheets, the preparation method of which comprises the following steps:
[0043] 1) Synthesis of monodisperse polystyrene beads:
[0044] Add 30ml of styrene and 300ml of deionized water into a 500ml three-necked flask, mix and stir, and pass nitrogen protection gas. When the temperature rises to 70-80°C, quickly add 0.3g of potassium persulfate initiator, and stir for 5 hours. The whole reaction is under nitrogen. Carried out under atmosphere; the homogeneous white emulsion obtained after the reaction is subjected to rotary evaporation to remove unreacted styrene monomer to obtain monodisperse polystyrene beads;
[0045] 2) Pour the monodisperse polystyrene pellets obtained in step 1) into a 1L beaker, and add deionized water to make the volume 500ml. After ultrasonic treatment for 0.5h, place it in an oven at 40°C for 3 to 4 days to obtain polystyrene Styrene colloid te...
Embodiment 2
[0056] A three-dimensional ordered macroporous calcium titanate photonic crystal constructed of porous nanosheets, the preparation method of which comprises the following steps:
[0057] 1) Synthesis of monodisperse polystyrene beads:
[0058] Add 60ml of styrene and 300ml of deionized water into a 500ml three-necked flask, mix and stir, pass nitrogen protection gas, wait for the temperature to rise to 70-80°C, quickly add 0.3g of potassium persulfate initiator, stir and react for 5 hours, and the whole reaction is under nitrogen Carried out under the atmosphere; the homogeneous white emulsion obtained after the reaction is subjected to rotary evaporation to remove unreacted styrene monomer to obtain monodisperse polystyrene beads, see Figure 8 ;
[0059] 2) Pour the monodisperse polystyrene pellets obtained in step 1) into a 1L beaker, and add deionized water to make the volume 500ml. After ultrasonic treatment for 0.5h, place it in an oven at 40°C for 3 to 4 days to obtain...
Embodiment 3
[0065] A three-dimensional ordered macroporous calcium titanate photonic crystal constructed of porous nanosheets, the preparation method of which comprises the following steps:
[0066] 1) Synthesis of monodisperse polystyrene beads:
[0067] Add 30ml of styrene and 300ml of deionized water into a 500ml three-necked flask, mix and stir, and pass nitrogen protection gas. When the temperature rises to 70-80°C, quickly add 0.3g of potassium persulfate initiator, and stir for 5 hours. The whole reaction is under nitrogen. Carried out under atmosphere; the homogeneous white emulsion obtained after the reaction is subjected to rotary evaporation to remove unreacted styrene monomer to obtain monodisperse polystyrene beads;
[0068] 2) Pour the monodisperse polystyrene pellets obtained in step 1) into a 1L beaker, and add deionized water to make the volume 500ml. After ultrasonic treatment for 0.5h, place it in an oven at 40°C for 3 to 4 days to obtain polystyrene Styrene colloid te...
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