Method for preparing titanium dioxide powder with different morphologies by solid phase method

A technology of titanium dioxide and solid-phase method, which is 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 process temperature, etc., achieve green output and easy experiment The effect of simple process and process conditions

Active Publication Date: 2021-02-12
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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  • Method for preparing titanium dioxide powder with different morphologies by solid phase method
  • Method for preparing titanium dioxide powder with different morphologies by solid phase method
  • Method for preparing titanium dioxide powder with different morphologies by solid phase method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] S1. Weigh 8.00g (0.05mol) titanyl sulfate solid and 5.30g (0.05mol) sodium carbonate solid in a ceramic mortar;

[0041] S2, the surfactant that adds is cetyltrimethylammonium bromide (CTAB), and grinds 3min in ceramic mortar, and the consumption of surfactant accounts for the ratio of reactant total consumption and is 2%;

[0042] S3, adding 3mL of water into the solid mixture, and continue grinding for 60min;

[0043] S4. After grinding, transfer the mixture to a centrifuge tube, and centrifuge on a centrifuge. After the end, pour off the supernatant, add water, stir with a glass rod for 2min-5min, and centrifuge again. Repeat the centrifugation for 3 times to complete 3 Secondary washing process;

[0044] S5. Drying the washed solid in an oven at 110° C. for 1 hour;

[0045] S6, putting the dried powder into a muffle furnace for 1.5h and calcining at a temperature range of 500°C;

[0046] S7. Finally, put the calcined sample into a sample bag for later use.

[00...

Embodiment 2

[0049] S1. Weigh 8.00g (0.05mol) titanyl sulfate solid and 5.30g (0.05mol) sodium carbonate solid in a ceramic mortar;

[0050] S2, the tensio-active agent that adds is sodium dodecylbenzenesulfonate (SDBS), and grinds 3min in ceramic mortar, and the consumption ratio of tensio-active agent accounts for reactant total consumption is 4%;

[0051] S3, adding 3mL of water into the solid mixture, and continue grinding for 60min;

[0052] S4. After grinding, transfer the mixture to a centrifuge tube and centrifuge on a centrifuge. After the end, pour off the supernatant, add water, stir with a glass rod for 2min-5min, and centrifuge again. Repeat the centrifugation 4 times to complete 4 Secondary washing process;

[0053] S5. Drying the washed solid in an oven at 100° C. for 2 hours;

[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, put the calcined sample into a sample bag ...

Embodiment 3

[0058] S1. Weigh 8.00g (0.05mol) titanyl sulfate solid and 5.30g (0.05mol) sodium carbonate solid in a ceramic mortar;

[0059] S2, the surfactant that adds is the polyethylene glycol (PEG-10000) that the molecular weight of nonionic surfactant is 10000, and the consumption ratio of surfactant accounts for the total consumption of reactant is 6%;

[0060] S3, adding 3mL of water into the solid mixture, and continue grinding for 60min;

[0061] S4. After grinding, transfer the mixture to a centrifuge tube, and centrifuge on a centrifuge. After the end, pour off the supernatant, add water, stir with a glass rod for 2min-5min, and centrifuge again. Repeat the centrifugation for 3 times to complete 3 Secondary washing process;

[0062] S5. Drying the washed solid in an oven at 100° C. for 1 hour;

[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, put the calcined sample into...

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Abstract

The invention discloses a method for preparing titanium dioxide powder with different morphologies by a solid-phase method. The method comprises the following steps: S1, weighing titanyl sulfate solidand sodium carbonate solid in a ceramic mortar, S2, adding different surfactants in the ceramic mortar, S3, adding a small amount of water into the solid mixture, and continuing grinding, S4, transferring the mixture into a centrifuge tube, centrifugally separating on a centrifugal machine, pouring out supernatant after centrifugal separation is finished, adding water, stirring for 2-5 minutes byusing a glass rod, centrifuging again, and repeating centrifugation for five times; S5 putting the washed solid into a drying oven with the temperature of 110 DEG C and drying for 1 hour; S6 puttingthe dried powder into a muffle furnace and calcining; and S7 putting the calcined sample into the sample bag. The solid-phase synthesis method of the titanium dioxide powder is simple in process condition, low in cost, low in requirement on equipment, green, environmentally friendly, small in particle size of titanium dioxide, high in yield, continuous and adjustable in operation procedure and easy for 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 many fields such as the degradation of organic wastewater, the reduction of heavy metal ions, air purification, sterilization, and anti-fog due to its high photocatalytic activity, good stability, non-toxicity to the human body, and low price. [0003] The preparation method of nano-titanium dioxide mainly contains gas-phase method, liquid-phase method and solid-phase method [Chen X B, Mao SS. 2959]. The gas phase method generally uses specific means to vaporize the reaction precursor first, so that it undergoes physical or chemical changes under gas phase conditions, then nucleates and grows during the cooling process, and finally forms nano-titanium dioxide [Akurati K K, Vital A, Klotz U E, et ...

Claims

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Application Information

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Patent Type & Authority Applications(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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