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Preparation method of doped black titanium dioxide

A technology of black titanium dioxide and titanium dioxide, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., can solve problems such as low yield of hydrothermal reaction and unsuitability for industrial production , to achieve good application prospects, low cost and simple preparation process

Active Publication Date: 2017-09-08
上海友兰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention uses a two-step method, and the hydrothermal reaction yield used is low, which is not suitable for industrial production. In addition, only fluorine-doped black titanium oxide can be obtained, and it is not suitable for doping other metal cations or non-metal ions.

Method used

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  • Preparation method of doped black titanium dioxide
  • Preparation method of doped black titanium dioxide
  • Preparation method of doped black titanium dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Measure 2.2L of tetrabutyl titanate and mix it with water to form a precipitate. The precipitate is fully washed with deionized water and centrifuged, then fully dried in an oven at 50°C to obtain amorphous titanium oxide;

[0035] Weigh 0.126kg of ferric nitrate nonahydrate and mix it with amorphous titanium oxide (Fe:Ti=0.01:1), mechanically mix it evenly, and place it in a nitrogen atmosphere furnace for annealing at 500°C for 12h;

[0036] After the sample was cooled with the furnace, it was washed with deionized water to remove unreacted nitrate, and after suction filtration, it was dried in an oven at 80°C to obtain Fe 3+ Doped black titanium oxide.

Embodiment 2

[0038] Measure 2.2L of tetrabutyl titanate and mix it with water to form a precipitate. The precipitate is fully washed with deionized water and centrifuged, then fully dried in an oven at 50°C to obtain amorphous titanium oxide;

[0039] Weigh 0.126kg of ferric nitrate nonahydrate and mix it with amorphous titanium oxide (Fe:Ti=0.005:1), mechanically mix it evenly and place it in a nitrogen atmosphere furnace for annealing at 500°C for 12h;

[0040] After the sample was cooled with the furnace, it was washed with deionized water to remove unreacted nitrate, and after suction filtration, it was dried in an oven at 80°C to obtain Fe 3+ Doped black titanium oxide.

Embodiment 3

[0042] Measure 2.2L of tetrabutyl titanate and mix it with water to form a precipitate. The precipitate is fully washed with deionized water and centrifuged, then fully dried in an oven at 50°C to obtain amorphous titanium oxide;

[0043] Weigh 2.52kg of ferric nitrate nonahydrate and mix it with amorphous titanium oxide (Fe:Ti=0.1:1), mechanically mix it evenly and place it in a nitrogen atmosphere furnace for annealing at 500°C for 12h;

[0044] After the sample was cooled with the furnace, it was washed with deionized water to remove unreacted nitrate, and after suction filtration, it was dried in an oven at 80°C to obtain Fe 3+ Doped black titanium oxide.

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Abstract

The invention provides a preparation method of novel doped black titanium dioxide. The method comprises the following steps: (1) a titanium oxide precursor is hydrolyzed, and after full washing, drying is carried out; (2) hydrolysate as well as metal nitrate, sulfide, fluoride, nitride and the like are fully mixed, and the materials are calcinated in an atmosphere furnace or a vacuum furnace at 300-800 DEG C for 2-15 hours. The products are fully washed and dried in order to obtain the doped black titanium dioxide. Doping with Fe, Mn, Sn, Ce and other metal cations as well as N, S, F and other anions are suitable for the method, the application range is wide, the process is simple, the cost is low, and the reaction conditions are simple.

Description

technical field [0001] The invention relates to a method for preparing black titanium dioxide, in particular to a method for doping black titanium dioxide Background technique [0002] China's economic development is accompanied by massive energy consumption and excessive environmental pollution. Energy and the environment have become a huge challenge to the sustainable development of China's economy. In terms of energy development, people hope to make full use of the inexhaustible solar energy, and converting solar energy into high-efficiency energy that people can directly use has become a hot research topic. As for environmental pollution, solar energy can also be used to decompose organic pollutants in the environment, which can help us improve environmental problems. These technologies that directly utilize solar energy, including photoelectric conversion, photothermal conversion, and photocatalysis, are considered to be the most direct and effective methods to directl...

Claims

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Application Information

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IPC IPC(8): B01J23/745B01J27/135B01J27/04B01J27/24B01J23/72B01J23/34B01J23/06B01J23/14B01J23/10
CPCB01J23/06B01J23/10B01J23/14B01J23/34B01J23/72B01J23/745B01J27/04B01J27/135B01J27/24B01J35/39
Inventor 尹浩吴恒冯静冯魁星单玉凤贺凯
Owner 上海友兰科技有限公司
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