Method for preparing carbon-doped titanium dioxide composite material and application thereof

A technology of titanium dioxide and composite materials, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve problems such as inconvenient operation, expensive raw materials, environmental nano-pollution, etc. The effect of extending the photoresponse range and improving the separation efficiency

A technology of titanium dioxide and composite materials, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve problems such as inconvenient operation, expensive raw materials, environmental nano-pollution, etc. The effect of extending the photoresponse range and improving the separation efficiency

CN102205236AInactive Publication Date: 2011-10-05SICHUAN AGRI UNIV
4 Cites 16 Cited by

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: the preparation method of carbon-doped titanium dioxide composite material, comprises the following steps:

[0024] (1) Dissolve 0.4 g of sucrose in 40 ml of water to make a 1% sucrose solution;

[0025] (2) Mix 10 ml of 15% TiCl with a mass concentration under magnetic stirring 3 Add the solution to the sucrose solution and mix thoroughly;

[0026] (3) Heat the mixed solution in a thermostat at 150°C for 6 hours to make the TiCl 3 Hydrolysis and carbonization of sucrose to form amorphous titanium dioxide and carbon composites;

[0027] (4) Wash the amorphous titanium dioxide and carbon composite material with methanol for 3 to 7 times, then wash with distilled water for 3 to 7 times, and dry it for use;

[0028] (5) Grind the amorphous titanium dioxide and carbon composite material and put it into the activation furnace, raise the temperature to 400°C at a rate of 3.5-5°C / min under the protection of nitrogen, and calcine at a constant temperature for 2...

Embodiment 2

[0029] Embodiment 2: the preparation method of carbon-doped titanium dioxide composite material, comprises the steps:

[0030] (1) Dissolve 2 grams of sucrose in 40 ml of water to make a 5% sucrose solution;

[0031] (2) Mix 10 ml of 15% TiCl with a mass concentration under magnetic stirring 3 Add the solution to the sucrose solution and mix thoroughly;

[0032] (3) Heat the mixed solution in a thermostat at 150°C for 12 hours to make the TiCl 3 Hydrolysis and carbonization of sucrose to form amorphous titanium dioxide and carbon composites;

[0033] (4) Wash the amorphous titanium dioxide and carbon composite material with ethanol for 3 to 7 times, then wash with distilled water for 3 to 7 times, and dry it for use;

[0034] (5) Grind the amorphous titanium dioxide and carbon composite material and put it into the activation furnace, raise the temperature up to 600°C at a rate of 3.5-5°C / min under the protection of nitrogen, and calcine at a constant temperature for 6 hour...

Embodiment 3

[0035] Embodiment 3: the preparation method of carbon-doped titanium dioxide composite material, comprises the steps:

[0036] (1) Dissolve 4 grams of sucrose in 40 ml of water to make a 10% sucrose solution;

[0037] (2) Mix 10 ml of 15% TiCl under magnetic stirring 3 Add the solution to the sucrose solution and mix thoroughly;

[0038](3) Heat the mixed solution in a thermostat at 150°C for 9 hours to make the TiCl 3 Hydrolysis and carbonization of sucrose to form amorphous titanium dioxide and carbon composites;

[0039] (4) Wash the amorphous titanium dioxide and carbon composite material with an organic solvent for 3 to 7 times, then wash with distilled water for 3 to 7 times, and dry it for use;

[0040] (5) After grinding the amorphous titanium dioxide and carbon composite material, put it into the activation furnace, raise the temperature to 700°C at a rate of 3.5-5°C / min under the protection of nitrogen, and calcine at a constant temperature for 4 hours to obtain a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for preparing a carbon-doped titanium dioxide composite material, comprising the following steps of: fully mixing a TiCl3 solution at the mass concentration of 10%-20% and a sucrose solution at the mass concentration of 1%-10% according to the volume ratio of 1:1-6 with magnetically stirring; placing the mixed solution into a thermostat to perform a reaction at the temperature of 100-150 DEG C for 6-12 hours to hydrolyze TiCl3 and carbonize the sucrose to form an amorphous titanium dioxide-carbon composite material; washing the obtained substance with an organic solvent for 3 to 7 times, and washing with distilled water for 3 to 7 times, followed by drying; crushing the obtained substance, placing the ground substance into an activation furnace, adjusting the temperature to 400-700 DEG C at the heating rate of 3-5 DEG C / min under the protection of nitrogen, calcining at constant temperature for 2-6 hours to produce the needed product. According to the invention, titanium dioxide is embedded in translucent carbon films to form tiny briquettes, thus overcoming the shortcoming that nanometer TiO2 is not easy to settle in a water solution and is difficult to recycle.

Description

technical field [0001] The invention relates to a preparation method and application of a titanium dioxide material, in particular to a preparation method and application of a carbon-doped titanium dioxide composite material. Background technique [0002] In 1972, Fujishima and Honda first proposed titanium dioxide (TiO 2 ) electrode can photolyze water, thus opening the TiO 2 A new era in photocatalysis research. Numerous studies have shown that TiO 2 It is a photocatalyst with high efficiency, non-toxicity, stable chemical properties, strong photooxidation resistance and low price, especially in the application of toxic and biodegradable organic wastewater treatment, TiO 2 Photocatalytic technology has attracted extensive attention. [0003] Nano-TiO 2 Although it can effectively degrade various organic pollutants, its photocatalytic reaction needs to be carried out under ultraviolet light irradiation, and the separation rate of photogenerated electrons and holes stil...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
05 Oct 2011
Publication
CN102205236A
IPC
B01J21/18; B01J21/06; C02F1/30; C02F1/32
Inventors
张延宗; 韩月