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Mesoporous TiO2 synthesized by using acid-processed nano-cellulose template and application of mesoporous TiO2

A technology of nanocellulose and acid method, applied in chemical instruments and methods, titanium oxide/hydroxide, light water/sewage treatment, etc., can solve the problem of low activity photocatalyst

Inactive Publication Date: 2012-07-11
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when degrading azo dye pollutants, the activity is higher than that of mesoporous TiO synthesized by acid nanocellulose template. 2 Photocatalyst low

Method used

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  • Mesoporous TiO2 synthesized by using acid-processed nano-cellulose template and application of mesoporous TiO2
  • Mesoporous TiO2 synthesized by using acid-processed nano-cellulose template and application of mesoporous TiO2
  • Mesoporous TiO2 synthesized by using acid-processed nano-cellulose template and application of mesoporous TiO2

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Experimental program
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Embodiment 1

[0028] Mesoporous TiO synthesized by an acid-processed nanocellulose template 2 It is prepared by the liquid-phase hydrolysis-precipitation method with the acid-processed nano-cellulose as the template and titanium tetrachloride as the titanium source;

[0029] The concrete steps of preparation method are as follows:

[0030] 1) Add 100mL acid-process nanocellulose colloidal solution to 150mL deionized water;

[0031] 2) Adjust the pH of the solution to 3~5 with 0.1mol / L hydrochloric acid;

[0032] 3) Add 10 mL of TiCl dropwise while stirring 4 , react for 30min;

[0033] 4) Heat up to 80°C, adjust the pH value of the solution to neutral with 10% ammonia water, and react for 30 minutes;

[0034] 5) Aging the reacted material in step 4) for 10 hours, washing it with water for 4 times and then washing it with ethanol for 3 times; vacuum drying the cleaned material at 85° C. for 12 hours), and grinding;

[0035] 6) Put the ground material into a quartz tube reactor, feed in ...

Embodiment 2

[0040] Mesoporous TiO synthesized by an acid-processed nanocellulose template 2 It is prepared by the liquid-phase hydrolysis-precipitation method with the acid-processed nano-cellulose as the template and titanium tetrachloride as the titanium source;

[0041] The concrete steps of preparation method are as follows:

[0042] 1) Add 400mL acid-process nanocellulose colloidal solution to 100mL deionized water;

[0043] 2) Regulate the pH of the solution to 3 with 1.0mol / L hydrochloric acid;

[0044] 3) Add 25mL of TiCl dropwise while stirring 4 , react for 20min;

[0045] 4) Heat up to 90°C, adjust the pH value of the solution to neutral with 30% ammonia water, and react for 30 minutes;

[0046] 5) Aging the reacted material in step 4) for 8 hours, washing it with water for 4 times, and then washing it once with ethanol; drying the cleaned material in vacuum at 80° C. for 24 hours, and grinding;

[0047] 6) Put the ground material into a quartz tube reactor, feed oxygen, r...

Embodiment 3

[0052] Mesoporous TiO synthesized by an acid-processed nanocellulose template 2 It is prepared by the liquid-phase hydrolysis-precipitation method with the acid-processed nano-cellulose as the template and titanium tetrachloride as the titanium source;

[0053] The concrete steps of preparation method are as follows:

[0054] 1) Add 100mL acid-process nanocellulose colloidal solution to 300mL deionized water;

[0055] 2) adjust the pH of the solution to 5 with hydrochloric acid of 0.5mol / L;

[0056] 3) Add 5mL of TiCl dropwise while stirring 4 , react for 40min;

[0057] 4) Heat up to 70°C, adjust the pH value of the solution to neutral with 20% ammonia water, and react for 30 minutes;

[0058] 5) Aging the reacted material in step d) for 8 hours, washing it with water for 4 times and then washing it with ethanol for 3 times; drying the cleaned material in vacuum at 95° C. for 18 hours, and grinding;

[0059] 6) Put the ground material into a quartz tube reactor, feed oxy...

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Abstract

The invention discloses mesoporous TiO2 synthesized by using an acid-processed nano-cellulose template and application of the mesoporous TiO2. The mesoporous TiO2 is prepared from acid-processed nano-cellulose serving as a template and titanium tetrachloride serving as a titanium source by a liquid phase hydrolysis-precipitation method. According to the mesoporous TiO2, the acid-processed nano-cellulose serving as environment-friendly biological renewable resources is used as a template agent, an ideal template agent structure is designed by regulating the length, diameter and the like of the cellulose, and a novel TiO2 mesoporous functional material which has a specific pore structure and meets the requirement for treating special pollutants is prepared directionally. The mesoporous TiO2 has certain theoretic and real significance for synthesizing the mesoporous material and deeply purifying polluted water.

Description

technical field [0001] The invention belongs to the field of porous material synthesis methods, and more specifically relates to a mesoporous TiO synthesized by an acid method nano-cellulose template 2 and its application. Background technique [0002] TiO 2 The photochemical reaction induced by the photoinduced electron transfer process at the particle interface has a significant effect on the elimination of organic pollutants in the environment. However, due to the TiO prepared by the traditional method 2 The particle agglomeration phenomenon is serious, the specific surface area is small, the adsorption capacity to pollution is weak, and the catalytic efficiency is low, which greatly limits the TiO 2 Practical application of photocatalytic oxidation technology. [0003] Mesoporous TiO 2 It has a large specific surface area, good surface permeability, strong adsorption performance and high light harvesting efficiency, etc., and has better performance than ordinary TiO...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053B01J21/06C02F1/30
Inventor 陈孝云陆东芳陈星卢燕凤张淑慧
Owner FUJIAN AGRI & FORESTRY UNIV