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

Active Publication Date: 2022-07-26
ANHUI JINGCHENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage is that the process temperature is high, the requirements for equipment materials are strict, the control of process parameters is precise, and the product cost is high
[0005] There are many patents for the preparation of titanium dioxide that have been disclosed, including: a method for preparing high-efficiency nano-titanium dioxide photocatalyst at room temperature (public number: CN107519852A), a method for preparing sea urchin-shaped rutile nano-titanium oxide (public number: CN105439197A), a A liquid-phase silicon deposition modified nano-titanium dioxide (publication number: CN105131655B), a preparation method and application of lithiated nano-titanium oxide (publication number: CN101475213A), etc., but the synthesis of titanium dioxide powder by solid-phase method is rare. Related literature reports

Method used

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  • A method for preparing titanium dioxide powders with different morphologies by solid-phase method
  • A method for preparing titanium dioxide powders with different morphologies by solid-phase method
  • A method for preparing titanium dioxide powders with different morphologies by solid-phase method

Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses a method for preparing titanium dioxide powders with different shapes by a solid-phase method. The method includes the following steps: S1: weighing solid titanium oxysulfate and solid sodium carbonate in a ceramic mortar, S2: adding different surface active substances in a ceramic mortar, S3: Add a small amount of water to the solid mixture, continue grinding, S4: Transfer the mixture to a centrifuge tube, centrifuge on a centrifuge, pour off the supernatant after the end, add water, use a glass Rod stirring for 2min-5min, centrifuging again, and repeating the centrifugation five times, S5: place the washed solid in an oven at 110 ° C for drying for 1h, S6: put the dried powder into a muffle furnace for calcination, S7: calcine After the sample is loaded into the sample bag. The solid-phase synthesis method of titanium dioxide powder of the invention has simple process conditions, low cost, low requirements for equipment, green environmental protection, small particle size of titanium dioxide, large output, continuously adjustable operation procedure, and easy industrial production.

Description

technical field [0001] The invention relates to a method for preparing titanium dioxide powder, in particular to a method for preparing titanium dioxide powder with different shapes by a solid phase method. Background technique [0002] Titanium dioxide (TiO 2 ) is widely used in the degradation of organic wastewater, the reduction of heavy metal ions, air purification, sterilization, anti-fog and many other fields due to its high photocatalytic activity, good stability, non-toxicity to human body, and low price. [0003] The preparation methods of nano titanium dioxide mainly include gas phase method, liquid phase method and solid phase method [Chen X B, Mao SS. Titanium dioxide nanomaterials: synthesis, properties, modifications, and applications, Chem. Rev., 2007, 107(7): 2891- 2959]. The gas phase method is generally to first vaporize the reaction precursor by specific means to make it undergo physical or chemical changes under gas phase conditions, then nucleate and g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/047C01G23/08B82Y40/00
CPCC01G23/047C01G23/08B82Y40/00C01P2004/16C01P2004/38C01P2004/64
Inventor 吴月侯帅帅夏义文
Owner ANHUI JINGCHENG NEW MATERIAL CO LTD
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