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Preparation method of meso-porous titanium dioxide/activated carbon in-situ composite material

An in-situ composite material and mesoporous titanium dioxide technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of high cost, complicated preparation process, high experimental cost, etc., and achieve low cost, The effect of simple preparation process

Inactive Publication Date: 2008-10-15
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the preparation processes of the existing physical methods require high-temperature calcination, which requires high reaction equipment and high experimental costs; while the preparation process of the existing chemical methods is complicated, the cost is high, the application effect is poor, and it is difficult to popularize and apply

Method used

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  • Preparation method of meso-porous titanium dioxide/activated carbon in-situ composite material
  • Preparation method of meso-porous titanium dioxide/activated carbon in-situ composite material
  • Preparation method of meso-porous titanium dioxide/activated carbon in-situ composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Add 0.4 g of sugar and stir and emulsify 160 ml of 6.5 g / L glycolipid-based microbial surfactant aqueous solution of coccilipid sophorolipid at room temperature for 30 minutes to obtain emulsion A. Then, add 50 ml of 0.5 mol / L TiCl 4 Solution was added dropwise in the emulsion A at a speed of 15 drops per minute, and continued magnetic stirring for 30 minutes, allowing Ti 4+ It can be fully adsorbed in the nanovesicle structure of coccidia cells. Slowly add 1 mol / L ammonia water dropwise at a rate of 10 drops per minute until pH = 7, continue magnetic stirring for 2 hours, let the cell structure part mineralize and deposit, then let stand for 2 hours, high-speed centrifuge, wash twice with water, wash once with alcohol, remove Cl - and NH 4 + and H 2 O. Finally, the precipitate was dried in a drying oven at 100 °C for 24 h, and then heat-treated and carbonized at 400 °C for 3 h at a heating rate of 15 °C / min to obtain mesoporous TiO 2 / Activated carbon in situ co...

Embodiment 2

[0035] Embodiment 2: 160ml of 6.5g / L glycolipid-based microbial surfactant coccidiolipid sophorolipid aqueous solution was added at room temperature with 0.4g of sugar and stirred and emulsified for 30 minutes to obtain emulsion A. Then, 60ml of 0.3mol / LTi(SO 4 ) 2 Solution, drop in the emulsion A with the speed of 16 drops per minute, continue magnetic stirring for 30 minutes, let Ti 4+ It can be fully adsorbed in the nanovesicle structure of coccidia cells. Slowly add 1 mol / L ammonia water dropwise at a rate of 10 drops per minute until pH = 7, continue magnetic stirring for 2 hours, let the cell structure part mineralize and deposit, then let stand for 2 hours, high-speed centrifuge, wash twice with water, wash once with alcohol, remove SO 4 2- and NH 4 + and H 2 O. Finally, the precipitate was dried in a drying oven at 100°C for 24 hours, then heated to 400°C at a heating rate of 15°C / min, and then heat-treated and carbonized at 400°C for 3 hours to obtain mesopor...

Embodiment 3

[0036] Embodiment 3. As described in Embodiment 1, the difference is that the heating rate of the heat treatment is 10° C. / min, the temperature is raised to 420° C., and the carbonization is carried out for 4 hours. Mesoporous TiO 2 / The particle size of the activated carbon in situ composite material is 36-49nm, and there are open worm-like ordered structural pores between the particles. The mesopore diameter distribution is 4-33nm, the atomic ratio of Ti / C is 1.01, and the specific surface area is 285m 2 / g.

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Abstract

The invention relates to a method for preparing mesoporous TiO2 / activated-carbon in-situ composite material, and belongs to the technology field of nanometer composite material. A natural microbial surfactant and a sugar additive are added in water, stirred, and cultured to form fermented emulsion; inorganic solution containing Ti<4+> is dropwise added in the emulsion, and the pH is adjusted to be 7 to 9; then precipitates are water-washed and alcohol-washed, and are processed through heat treatment; the precipitates are rapidly heated up in a calciner until the temperature reaches 300 to 600 DEG C and then are carbonized to obtain the mesoporous TiO2 / activated-carbon in-situ composite material. By utilizing the nanometer multilayered vesicle structure of the microorganisms and the mineralization deposition process, the preparation method synthesizes the mesoporous TiO2 / activated-carbon in-situ composite material with photoelectric double functions and high catalytic activity under the mild condition, wherein, the specific surface area is high, the catalytic activity is high, and the reproducibility of the mesoporous structure is good.

Description

technical field [0001] The invention relates to a mesoporous TiO with low-cost photoelectric dual function and high catalytic activity 2 The invention relates to a preparation method of an activated carbon in-situ composite material, which belongs to the technical field of nanocomposite materials. Background technique [0002] Mesoporous TiO 2 / Activated carbon in-situ composite materials can be applied to battery materials (such as lithium-ion batteries, solar cells, Fuel cells, etc.) and catalytic materials, can also be used as photocatalysts for high-concentration refractory industrial wastewater treatment technology, and can also be used for supercapacitors and high-performance electronic ceramics. Currently TiO 2 The preparation methods of carbon composite materials include pyrolysis method, polymerization method, sol-gel method, direct dispersion method, LB film method, microemulsion polymerization method, reactive magnetron sputtering method, catalytic cracking or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18B01J21/06B01J37/00B01J35/10
Inventor 张旭东何文崔静洁马景云刘鹏程卜凡晴阎顺普田修营
Owner QILU UNIV OF TECH
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