Method for preparing titanium dioxide/bamboo charcoal composite material

A composite material and titanium dioxide technology, which is applied in chemical instruments and methods, oxidized water/sewage treatment, chemical/physical processes, etc., can solve the problems of reduced photocatalytic efficiency, low utilization rate of light energy, and difficulty in recycling, etc. Catalytic performance, reduced production cost, uniform size distribution effect

Inactive Publication Date: 2010-01-27
LONGYAN UNIV
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Problems solved by technology

[0002] Nano-titanium dioxide is widely used as a photocatalyst in the field of photocatalytic oxidation treatment of wastewater due to its stable chemical properties, high efficiency, and low cost. Due to the low utilization rate of light energy and other problems, this new technology has not been popularized and applied in industrial production; bamboo charcoal has become a very Catalyst carrier with application prospects, using bamboo charcoal as a carrier to prepare nano-titanium dioxide composite materials, can organically combine the adsorption performance of bamboo charcoal and nano-titanium dioxide photocatalytic activity, give full play to the advantages of the two materials, not only can reduce the amount of titanium dioxide, but also Reduce preparation cost and use cost, solve problems such as difficulty in recycling in wastewater treatment
Regarding the preparation method of titanium dioxide/bamboo charcoal composite material, Journal of Nanjing Forestry University (Natural Science Edition, 2008, 32, Zhou Jianbin, Deng Congjing, Fu Jinhe, Zhang Qisheng) discloses a method of loading titanium dioxide on bamboo charcoal by impregnation. By using the purchased nano-titanium dioxide as raw material, adding

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  • Method for preparing titanium dioxide/bamboo charcoal composite material

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Example Embodiment

[0012] Example 1:

[0013] Using bamboo charcoal and tetra-n-butyl titanate as raw materials, the titanium dioxide / bamboo charcoal composite material was prepared by a microwave assisted method. The specific implementation steps are:

[0014] The 40-mesh bamboo charcoal is selected by the 8411A electric vibrating screen, soaked in dilute acid for 24 hours, washed repeatedly with distilled water until it is neutral, and placed in an oven for drying.

[0015] Mix absolute ethanol, tetra-n-butyl titanate, and glacial acetic acid at 56%:34%:10% by volume, and stir for 10 minutes to obtain solution A; weigh 5g of bamboo charcoal and mix with 58mL of solution A, and continue to stir for 30 minutes to obtain Mixture B; Measure 90% ethanol by volume, adjust the pH of the solution to 2.5 with dilute nitric acid to obtain solution C; pour 20 mL of solution C into the pear-shaped dropping funnel, adjust the plunger of the dropping funnel to make the solution C was added dropwise to the unifor...

Example Embodiment

[0018] Example 2:

[0019] The 60-mesh bamboo charcoal is selected by the 8411A electric vibrating machine, soaked in dilute acid for 24 hours, washed repeatedly with distilled water until it is neutral, and placed in an oven for drying.

[0020] Mix anhydrous ethanol, tetra-n-butyl titanate, and glacial acetic acid at a volume percentage of 60%:32%:8%, and stir for 10 minutes to obtain solution A; weigh 5 g of bamboo charcoal and 60 mL of solution A, and continue to stir for 30 minutes to obtain Mixture B; measure 90% ethanol by volume, adjust the pH of the solution to 2.7 with dilute nitric acid to obtain solution C; pour 22mL of solution C into the pear-shaped dropping funnel, adjust the plunger of the dropping funnel to make the solution C was added dropwise to the uniformly stirred mixture B at a rate of 1 drop / s to 2 drops / s, and the entire dropping process was controlled within 40 minutes.

[0021] Pour three equal parts of the mixture into a dry PTFE beaker, then put the PTF...

Example Embodiment

[0023] Example 3:

[0024] The 100-mesh bamboo charcoal is selected by the 8411A electric vibrating machine, soaked in dilute acid for 24 hours, washed repeatedly with distilled water until it is neutral, and placed in an oven for drying.

[0025] Anhydrous ethanol, tetra-n-butyl titanate, and glacial acetic acid were mixed at a volume percentage of 58%:33%:9%, and stirred for 10 minutes to obtain solution A. Weigh 5g of bamboo charcoal and mix with 58mL of solution A, continue to stir for 30 minutes to obtain mixture B; measure 90% ethanol by volume, adjust the pH of the solution to 2.7 with dilute nitric acid to obtain solution C; pour 22mL of solution C into the pear In the dropping funnel, adjust the piston of the dropping funnel so that the solution C is added dropwise to the uniformly stirred mixture B at a rate of 1 drop / s to 2 drops / s, and the entire dropping process is controlled at 30 min.

[0026] Pour three equal parts of the mixture into a dry PTFE beaker, then put the ...

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Abstract

The invention discloses a method for preparing a titanium dioxide/bamboo charcoal composite material. The titanium dioxide/bamboo charcoal composite material is prepared by using bamboo charcoal as the carrier and n-tetrabutyl titanate as the titanium source and through assisting by a microwave process. During microwave heating, large and small particles in the material are simultaneously and fast heated, thereby reducing thermal stress and further avoiding the breakage of the material, improving the microstructure of the material, uniformly loading active components on the carrier and improving the photocatalysis property of the material used in the field of sewage disposal with photocatalysis oxidization process. According to the detection of X-ray diffraction, the TiO2 loaded in the composite material is mainly of anatase type. The method solves the problems that the preparation of the titanium dioxide/bamboo charcoal composite material is time-consuming and costy, uniform titanium dioxide/bamboo charcoal composite material is difficult to prepare and carbon pollution is easily caused during the sintering.

Description

a technical field [0001] The invention relates to a method for preparing chemical composite materials, in particular to a method for preparing titanium dioxide / bamboo charcoal composite materials. Two background technology [0002] Nano-titanium dioxide is widely used as a photocatalyst in the field of photocatalytic oxidation treatment of wastewater due to its stable chemical properties, high efficiency, and low cost. Due to the low utilization rate of light energy and other problems, this new technology has not been popularized and applied in industrial production; bamboo charcoal has become a very Catalyst carrier with application prospects, using bamboo charcoal as a carrier to prepare nano-titanium dioxide composite materials, can organically combine the adsorption performance of bamboo charcoal and nano-titanium dioxide photocatalytic activity, give full play to the advantages of the two materials, not only can reduce the amount of titanium dioxide, but also The prepa...

Claims

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Application Information

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IPC IPC(8): B01J21/18B01J21/06B01J37/34C02F1/30C02F1/72
Inventor 胡志彪陈燕青丘则海
Owner LONGYAN UNIV
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