A method for preparing titanium dioxide powders with different morphologies by solid-phase method
A technology of titanium dioxide and solid-phase method, applied in the direction of titanium dioxide, titanium oxide/hydroxide, nanotechnology, etc., can solve the problems of strict equipment material requirements, rare literature reports, high product cost, and achieve green production and easy experimentation. Process, low cost effect
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Embodiment 1
[0040] S1, weigh 8.00g (0.05mol) solid titanyl sulfate and 5.30g (0.05mol) solid sodium carbonate in a ceramic mortar;
[0041] S2. The added surfactant is cetyl trimethyl ammonium bromide (CTAB), which is ground in a ceramic mortar for 3 minutes, and the proportion of the surfactant to the total reactant is 2%;
[0042] S3, 3mL of water is added to the solid mixture, and the grinding is continued for 60min;
[0043] S4. After grinding, transfer the mixture to a centrifuge tube, centrifuge it on a centrifuge, pour off the supernatant, add water, stir with a glass rod for 2min-5min, and centrifuge again. Repeat the centrifugation 3 times to complete 3 secondary washing process;
[0044] S5. The washed solid is placed in an oven at 110° C. for drying for 1 h;
[0045] S6. Put the dried powder into the muffle furnace for calcination for 1.5h, and the calcination temperature range is 500℃;
[0046] S7. Finally, the calcined sample is put into a sample bag for use.
[0047] XRD...
Embodiment 2
[0049] S1, weigh 8.00g (0.05mol) solid titanyl sulfate and 5.30g (0.05mol) solid sodium carbonate in a ceramic mortar;
[0050] S2. The added surfactant is sodium dodecylbenzene sulfonate (SDBS), which is ground in a ceramic mortar for 3 minutes, and the ratio of the amount of the surfactant to the total amount of the reactants is 4%;
[0051] S3, 3mL of water is added to the solid mixture, and the grinding is continued for 60min;
[0052] S4. After grinding, transfer the mixture to a centrifuge tube and centrifuge it on a centrifuge. After finishing, pour off the supernatant, add water, stir with a glass rod for 2min-5min, and centrifuge again. Repeat the centrifugation for 4 times to complete 4 secondary washing process;
[0053] S5, placing the washed solid in an oven at 100°C for drying for 2h;
[0054] S6. Put the dried powder into a muffle furnace for calcination for 1 hour, and the calcination temperature range is 700°C;
[0055] S7. Finally, the calcined sample is p...
Embodiment 3
[0058] S1, weigh 8.00g (0.05mol) solid titanyl sulfate and 5.30g (0.05mol) solid sodium carbonate in a ceramic mortar;
[0059] S2, the added surfactant is polyethylene glycol (PEG-10000) with a molecular weight of 10,000 as a non-ionic surfactant, and the ratio of the amount of the surfactant to the total amount of the reactants is 6%;
[0060] S3, 3mL of water is added to the solid mixture, and the grinding is continued for 60min;
[0061] S4. After grinding, transfer the mixture to a centrifuge tube, centrifuge it on a centrifuge, pour off the supernatant, add water, stir with a glass rod for 2min-5min, and centrifuge again. Repeat the centrifugation 3 times to complete 3 secondary washing process;
[0062] S5. The washed solid is placed in an oven at 100° C. for drying for 1 h;
[0063] S6. Put the dried powder into a muffle furnace for calcination for 1 hour, and the calcination temperature range is 900°C;
[0064] S7. Finally, the calcined sample is put into a sample ...
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