Silver-loaded TiO2-modified bamboo charcoal material and preparation method thereof

A bamboo charcoal, silver-loaded technology, applied in the directions of botanical equipment and methods, chemical instruments and methods, other chemical processes, etc., can solve the problems of high cost, no sterilization and humidity control effects, complex process, etc., and achieves adsorption. Poor ability, good adsorption and humidity control effect, good photocatalytic sterilization effect

Inactive Publication Date: 2017-07-07
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method converts TiO 2 The compounding with bamboo charcoal and silver-loaded modification are carried out step by step, which has the disadvantages of complex process and high cost, and this patent mainly focuses on the effect of the composite material on degrading organic pollutants, and does not involve its sterilization and humidity control effects

Method used

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  • Silver-loaded TiO2-modified bamboo charcoal material and preparation method thereof
  • Silver-loaded TiO2-modified bamboo charcoal material and preparation method thereof
  • Silver-loaded TiO2-modified bamboo charcoal material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Bamboo charcoal pretreatment: choose 400-mesh bamboo charcoal, first boil the bamboo charcoal with deionized water for 30 minutes, then wash and filter with deionized water, repeat this 3 times, and dry it in a constant temperature drying oven at 105°C before use.

[0029]Take 8ml of tetrabutyl titanate liquid, add 12ml of absolute ethanol and mix evenly, then add 0.12g of silver nitrate crystals, adjust the pH of the mixed solution to 5.0 with nitric acid, stir well to obtain mixed solution A; take another 8ml of absolute ethanol solution , add 18ml of deionized water, adjust the pH of the solution to 2.0 with nitric acid, and stir evenly to obtain the mixed solution B; under vigorous stirring, quickly add the mixed solution B to the mixed solution A, and continue stirring for several hours until a transparent and clear sol, and then add 25g of pretreated bamboo charcoal powder, and then fully stir until the gel is formed; the above gel is placed in the air to dry and a...

Embodiment 2

[0033] Bamboo charcoal pretreatment: select 500-mesh bamboo charcoal, first boil the bamboo charcoal with deionized water for 30 minutes, then wash and filter with deionized water, repeat this 3 times, and dry it in a constant temperature drying oven at 105°C for later use.

[0034] Take 8ml of tetrabutyl titanate liquid, add 12ml of absolute ethanol and mix evenly, then add 0.1g of silver nitrate crystals, adjust the pH of the mixed solution to 4.5 with nitric acid, stir well to obtain mixed solution A; take another 8ml of absolute ethanol solution , add 18ml of deionized water, adjust the pH of the solution to 2.0 with nitric acid, and stir evenly to obtain the mixed solution B; under vigorous stirring, quickly add the mixed solution B to the mixed solution A, and continue stirring for several hours until a transparent and clear sol, then add 40g of pretreated bamboo charcoal powder, and then fully stir until a gel is formed; the above gel is placed in the air to dry and age ...

Embodiment 3

[0038] Bamboo charcoal pretreatment: select 400-mesh bamboo charcoal, first boil the bamboo charcoal with deionized water for 30 minutes, then wash and filter with deionized water, repeat this 3 times, and dry it in a constant temperature drying oven at 105°C before use.

[0039] Take 0.02mol of tetrabutyl titanate liquid, add 0.12mol of absolute ethanol and mix evenly, then add 0.051g of silver nitrate crystals, adjust the pH of the mixed solution to 5.0 with nitric acid, and stir to obtain mixed solution A; Water ethanol solution, add 0.6mol deionized water, adjust the pH of the solution to 2.5 with nitric acid, stir evenly to obtain mixed solution B; under vigorous stirring, quickly add mixed solution B to mixed solution A, and continue stirring for a certain period of time until Form a transparent and clear sol, then add 17.016g of pretreated bamboo charcoal powder, and then fully stir until a gel is formed; place the above gel in the air to dry and age for 1 day, and then ...

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Abstract

The invention relates to a silver-loaded TiO2-modified bamboo charcoal material and a preparation method thereof. The silver-loaded TiO2-modified bamboo charcoal material is prepared through the following steps of (1) weighing tetrabutyl titanate, mixing tetrabutyl titanate with one part of absolute ethyl alcohol, adding silver nitrate crystal and adjusting the pH to 4-5 to obtain a mixed solution A; (2) weighing the remaining absolute ethyl alcohol and mixing the remaining absolute ethyl alcohol with deionized water and adjusting the pH to 1-2.5 to obtain a mixed solution B; (3) adding the mixed solution to the mixed solution A under intense stirring, and stirring until transparent clarified sol is formed, adding bamboo charcoal powder and carrying out stirring reaction to form gel; and (4) ageing, drying, burning and cooling the gel obtained in the step (3) to obtain the silver-loaded TiO2-modified bamboo charcoal material. compared with the prior art, the composite material has a porous adsorption function of bamboo charcoal and a visible light catalytic sterilization function of silver-loaded nano TiO2, and the bamboo charcoal and the silver-loaded nano TiO2 can work together for complementary advantages, so that the composite material has excellent adsorption, humidification and photocatalytic sterilization effects.

Description

technical field [0001] The invention relates to a modified bamboo charcoal material, in particular to a silver-loaded TiO 2 Modified bamboo charcoal material and its preparation method. Background technique [0002] With the improvement of people's living standards, environmental protection and health have gradually become the topics that people generally pay attention to, and people's requirements for environmental comfort are getting higher and higher. Therefore, the development and application of various functional materials have also become a hot spot. Bamboo charcoal is a porous functional material. Due to its well-developed pore structure and strong adsorption capacity, it is widely used in air and water purification and environmental humidity control. TiO 2 It is a nano-photocatalyst with good photocatalytic sterilization effect, but it can only absorb and utilize ultraviolet light, and the utilization rate of visible light is extremely low. In addition, TiO 2 When...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01J23/50A01N25/08A01N59/16A01P1/00A01P3/00
CPCB01J20/20A01N25/08A01N59/16B01J23/50B01J35/39
Inventor 蒋正武曾志勇陶志龙
Owner TONGJI UNIV
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