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Preparation method of black rutile phase titanium dioxide

A technology of rutile phase and titanium dioxide, which is applied in the field of titanium dioxide, can solve the problems of low utilization rate of sunlight and achieve the effects of low price, low production cost and short cycle

Active Publication Date: 2020-04-24
苏州机数芯微科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Based on the technical problems existing in the background technology, the present invention proposes a method for preparing black rutile phase titanium dioxide. The process of the present invention is simple, does not involve toxic and harmful reagents, and the production cost is low and the cycle is short, which can meet the requirements of industrial mass production. Black rutile phase titanium dioxide has a strong absorption of ultraviolet light, visible light and infrared light in the entire solar spectrum, and can effectively use sunlight for catalytic reactions, solving the problem of existing rutile phase TiO2. 2 The problem of low utilization rate of sunlight

Method used

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  • Preparation method of black rutile phase titanium dioxide
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  • Preparation method of black rutile phase titanium dioxide

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Effect test

Embodiment 1

[0029] A kind of preparation method of black rutile phase titanium dioxide, comprises the steps: with 1mL TiCl 4 Dissolve in 10mL of absolute ethanol, put it in an oven at 70°C for 5 hours to completely evaporate the absolute ethanol, and obtain the precursor of amorphous titanium oxide; take the precursor of amorphous titanium oxide and put it in a corundum crucible, and place it at high temperature In the muffle furnace, heat up to 600°C at a rate of 15°C / min, heat-preserve and calcinate for 3 hours, and cool down to room temperature to obtain white rutile phase titanium dioxide; add 0.1g of white rutile phase titanium dioxide to 6M hydrochloric acid aqueous solution for ultrasonic dispersion, and then add 0.3g zinc powder, stirred for 15min, centrifuged, washed the precipitate, dried to obtain black rutile phase titanium dioxide.

[0030] Take the above-mentioned black rutile phase titanium dioxide and white rutile phase titanium dioxide for detection, the results can be fo...

Embodiment 2

[0035] A kind of preparation method of black rutile phase titanium dioxide, comprises the steps: with 2mL TiCl 4 Dissolve in 10mL of absolute ethanol, put it in an oven at 70°C for 6 hours to completely evaporate the absolute ethanol, and obtain the precursor of amorphous titanium oxide; take the precursor of amorphous titanium oxide and put it into a corundum crucible, and place it at high temperature In the muffle furnace, heat up to 700°C at a rate of 15°C / min, heat-preserve and calcinate for 3 hours, and cool down to room temperature to obtain white rutile phase titanium dioxide; add 0.2g of white rutile phase titanium dioxide to 6M hydrochloric acid aqueous solution for ultrasonic dispersion, and then add 0.4g zinc powder, stirred for 20min, centrifuged, washed the precipitate, dried to obtain black rutile phase titanium dioxide.

Embodiment 3

[0037] A kind of preparation method of black rutile phase titanium dioxide, comprises the steps: with 3mL TiCl 4 Dissolve in 10mL of isopropanol, put it in an oven at 80°C for 8 hours to completely evaporate the isopropanol, and obtain the precursor of amorphous titanium oxide; take the precursor of amorphous titanium oxide and put it into a corundum crucible, and place it at high temperature In a muffle furnace, heat up to 650°C at a rate of 5°C / min, heat-preserve and calcinate for 4 hours, and cool down to room temperature to obtain white rutile phase titanium dioxide; add 0.1g of white rutile phase titanium dioxide to 8M hydrochloric acid aqueous solution for ultrasonic dispersion, and then add 0.4g magnesium powder, stirred for 18min, centrifuged, washed the precipitate, dried to obtain black rutile phase titanium dioxide.

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Abstract

The invention discloses a preparation method of black rutile phase titanium dioxide, which comprises the following steps: taking an amorphous titanium oxide precursor, heating to 600 DEG C or above, and calcining for 2-4 hours to obtain white rutile phase titanium dioxide; adding white rutile phase titanium dioxide into a hydrochloric acid aqueous solution, carrying out ultrasonic dispersion, adding metal powder, stirring for 15 minutes or more, centrifuging, taking the precipitate, washing, and drying to obtain black rutile phase titanium dioxide. The process is simple, no toxic and hazary agents is related, production cost is low, the preparation method is simple in process and short in period, the requirement for industrial large-batch production can be met, the obtained black rutile phase titanium dioxide can strongly absorb ultraviolet light, visible light and infrared light in the whole solar spectrum, sunlight can be effectively utilized for a catalytic reaction, and the problemthat an existing rutile phase TiO2 is low in sunlight utilization rate is solved.

Description

technical field [0001] The invention relates to the technical field of titanium dioxide, in particular to a method for preparing black rutile phase titanium dioxide. Background technique [0002] Since the beginning of the 21st century, the rapid economic development has consumed a large amount of fossil resources such as oil, coal, and natural gas, and has also brought serious environmental pollution, seriously restricting the sustainable development of society. Therefore, it is urgent to develop and explore new energy materials and solve current energy and environmental problems, and new technologies based on semiconductor photocatalysis are expected to become one of the most effective basic solutions to the above problems. [0003] Since Fujishima and Honda in Japan reported rutile TiO in 1972 2 Since the electrode can decompose water to generate hydrogen under ultraviolet light irradiation, TiO 2 As a widely studied photocatalyst, due to its non-toxicity, low price, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/04
CPCC01G23/043C01P2004/04C01P2002/86C01P2002/84C01P2004/01
Inventor 朱青陈晓露李磊磊杨丽
Owner 苏州机数芯微科技有限公司
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