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Application of volcanic used as titanium dioxide loaded photocatalyst

A photocatalyst, titanium dioxide technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., to achieve the effect of mild conditions, high carrier strength, and small grains

Active Publication Date: 2015-04-29
山东默锐环境产业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, there is currently no report on the application of volcanic rock as a titanium dioxide photocatalyst.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A preparation method of a titanium dioxide photocatalyst supported by volcanic rocks, comprising the steps of:

[0032] (1) Wash the volcanic rock with ultrasonic water at 22°C and ultrasonic frequency of 45kHz for 1h, then soak it in acetone and ethanol for 1h respectively, after filtering, wash the volcanic rock with clean water, dry at 80°C, and then put in 0.3mol / L Soak in NaOH solution for 3 hours, wash with water, and dry at 80°C to obtain a volcanic rock carrier;

[0033] (2) 24g Ti(SO 4 ) 2 Dissolve 24g urea in 1000ml water to prepare loading solution;

[0034] (3) Immerse 100g of the volcanic rock carrier prepared in step (1) in the load solution prepared in step (2), stir and mix evenly, heat to 70°C, and continuously add 0.1mol / L aqueous urea solution to control the reaction system. pH=5~7, keep warm for 2 hours, age for 24 hours, filter, dry at 70°C, then raise the temperature to 200°C at a rate of 2°C / min, keep it for 1 hour, then increase the temperatur...

Embodiment 2

[0037] A preparation method of a titanium dioxide photocatalyst supported by volcanic rocks, comprising the steps of:

[0038] (1) Wash the volcanic rock with ultrasonic water at 18°C ​​and ultrasonic frequency of 35kHz for 1h, then soak it in acetone and ethanol for 3h respectively, after filtering, wash the volcanic rock with clean water, dry at 80°C, and put in 0.1mol / L Soak in NaOH solution for 3 hours, wash with water, and dry at 80°C to obtain a volcanic rock carrier;

[0039] (2) 24g Ti(SO 4 ) 2 Dissolve 48g urea in 1000ml water to prepare loading solution;

[0040] (3) Immerse 100 g of the volcanic rock carrier prepared in step (1) in the loading solution prepared in step (2), stir and mix evenly, heat to 90° C., and continuously add dropwise 0.1mol / L aqueous urea solution to control the reaction system. pH=5~7, keep warm for 4 hours, age for 48 hours, filter, dry at 80°C, then raise the temperature to 200°C at a rate of 2°C / min, keep it for 1 hour, then increase th...

Embodiment 3

[0043] A preparation method of a titanium dioxide photocatalyst supported by volcanic rocks, comprising the steps of:

[0044] (1) Wash the volcanic rock with ultrasonic water at 20°C and ultrasonic frequency 40kHz for 1h, then soak it in acetone and ethanol for 2h respectively, after filtering, wash the volcanic rock with clean water, dry it at 80°C, and then put it into 0.1mol / L Soak in NaOH solution for 3 hours, wash with water, and dry at 80°C to obtain a volcanic rock carrier;

[0045] (2) 24g Ti(SO 4 ) 2 Dissolve 36g urea in 1000ml water to prepare loading solution;

[0046] (3) Immerse 100g of the volcanic rock carrier prepared in step (1) in the load solution prepared in step (2), stir and mix evenly, heat to 80°C, and continuously add 0.1mol / L aqueous urea solution to control the reaction system. pH=5~7, keep warm for 4 hours, age for 24 hours, filter, dry at 80°C, then raise the temperature to 200°C at a rate of 2°C / min, keep it for 1 hour, then increase the tempera...

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Abstract

The invention relates to application of a volcanic used as a titanium dioxide loaded photocatalyst. The application comprises the following steps: (1) removing impurities on the surface of the volcanic to prepare a volcanic carrier; (2) dissolving Ti(SO4)2 and urea into water according to proportions to prepare load solutions; (3) soaking the volcanic carrier into the load solutions for reacting, adding urea solutions or ammonia water in a reaction process; aging, filtering, drying and baking to prepare the volcanic loaded titanium dioxide photocatalyst. The volcanic is used as a carrier of the titanium dioxide photocatalyst, so that the intensity of the carrier is high, and the performance of the loaded photocatalyst can be improved to a certain extent; in addition, the carrier has a rich honeycomb porous structure, and is high in specific surface area and high in adsorption performance; because of the carrier of the photocatalyst, the load firmness and the photocatalytic performance of the loaded catalyst can be improved.

Description

technical field [0001] The invention relates to the application of volcanic rock as a titanium dioxide photocatalyst load, and belongs to the technical field of semiconductor photocatalytic functional materials. Background technique [0002] Since 1972, A.Fujishima and K.Honda published on n-type semiconductor TiO in Nature magazine 2 Since the article that photo-splitting of water can be carried out, semiconductor photocatalysis technology has become an emerging research discipline. As a new technology of pollution control, semiconductor heterogeneous photocatalysis has been paid more and more attention. [0003] The heterogeneous semiconductor photocatalytic technology can almost completely mineralize various organic and inorganic substances in wastewater into CO 2 、H 2 O and inorganic salts will not produce secondary pollution, achieve the purpose of controlling environmental pollution, and overcome the shortcomings of traditional phase transfer and filtration methods....

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J21/06
Inventor 李建业杨建伟姜绍龙王立颖漆伶荣庞丽梅甄冠胜
Owner 山东默锐环境产业股份有限公司
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