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Preparation method of in-situ photo-reduction cuprous oxide/titanium dioxide compound

A technology of titanium dioxide and cuprous oxide is applied in the field of catalysis, which can solve the problems of complex system and difficult control of reaction process, and achieve the effects of pure reaction system, simple method and easy industrialization promotion.

Inactive Publication Date: 2014-12-31
苏州禹净环境科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods usually require the addition of surfactants, making the system complex and the reaction process difficult to control

Method used

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  • Preparation method of in-situ photo-reduction cuprous oxide/titanium dioxide compound

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Embodiment 1

[0025] Embodiment 1: the preparation method of the cuprous oxide / titania composite of in-situ photoreduction of the present invention, it comprises the steps:

[0026] 1) In parts by mass, add 0.2 parts of titanium dioxide nanoparticles and 0.02 parts of CuCl to 10 parts of methanol / water solution 2 2H 2 O, and carry out ultrasonic dispersion; Wherein the volume ratio of methanol and water is 1:3;

[0027] 2) After the solution obtained in the above step 1) is subjected to nitrogen aeration treatment for 10 minutes, under the condition of magnetic stirring, react with 500w high-pressure mercury light for 2 hours;

[0028] 3) After the reaction, the obtained product was centrifuged and washed twice with absolute ethanol, and dried at 70° C. for 24 hours to obtain a khaki solid, which was the final product.

Embodiment 2

[0029] Embodiment 2: the preparation method of the cuprous oxide / titania composite of in-situ photoreduction of the present invention, it comprises the steps:

[0030] 1) In parts by mass, add 0.1 part of titanium dioxide nanoparticles and 0.01 part of CuCl to 10 parts of methanol / water solution 2 2H 2 O, and carry out ultrasonic dispersion; Wherein the volume ratio of methanol and water is 1:1;

[0031] 2) After the solution obtained in the above step 1) was subjected to nitrogen aeration treatment for 10 minutes, under the condition of magnetic stirring, it was reacted with 500w high-pressure mercury lamp for 1.5 hours;

[0032] 3) After the reaction, the obtained product was centrifuged and washed twice with absolute ethanol, and dried at 60° C. for 24 hours to obtain a khaki solid, which was the final product.

Embodiment 3

[0033] Embodiment 3: the preparation method of the cuprous oxide / titania composite of in-situ photoreduction of the present invention, it comprises the following steps:

[0034] 1) In parts by mass, add 0.3 parts of titanium dioxide nanoparticles and 0.03 parts of CuCl in 10 parts of methanol / water solution 2 2H 2 O, and carry out ultrasonic dispersion; Wherein the volume ratio of methanol and water is 1:6;

[0035] 2) After the solution obtained in the above step 1) is subjected to nitrogen aeration treatment for 15 minutes, under the condition of magnetic stirring, react with a 500w high-pressure mercury lamp for 2 hours;

[0036] 3) After the reaction, the obtained product was centrifuged and washed three times with absolute ethanol, and dried at 90° C. for 30 h to obtain a khaki solid, which was the final product.

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Abstract

The invention relates to a preparation method of an in-situ photo-reduction cuprous oxide / titanium dioxide compound. The preparation method comprises the following steps: (1) adding 0.1-0.3 part of titanium dioxide nano particles and 0.01-0.03 part of CuCl2<.>2H2O into 10 parts of methyl alcohol / aqueous solution according to mass part, and performing ultrasonic dispersion, wherein the volume ratio of methyl alcohol to water is (1 to 1) to (1 to 6); (2) performing nitrogen aeration treatment on a solution obtained in the step (1) for 10-15min, and under a condition of magnetic stirring, and performing illumination reaction 1.5-2 hours by a 500w high-pressure mercury lamp; (3) after the reaction is ended, centrifugating a product obtained by the reaction, washing the product by absolute ethyl alcohol for two to three times, and drying the product under a condition that the temperature is 60-90 DEG C for 24-30 hours to obtain an earthy yellow solid which is the final products. By the adoption of an ultraviolet deposition reduction method, the products are higher in dispersion and uniform in size; the photocatalysis activity is much higher than that of pure Cu2O or pure TiO2; under the illumination of visible light, dye organic matters can be efficiently degraded; the raw materials of the product are low in cost; a preparation process is environment-friendly; the preparation period is short, the cost is low, the benefit is high, and industrial popularization is facilitated.

Description

technical field [0001] The invention relates to a preparation method of a cuprous oxide / titanium dioxide composite, in particular to a preparation method of an in-situ photoreduced cuprous oxide / titania composite, belonging to the technical field of catalysis. Background technique [0002] Noble metal surface deposition is an effective method to enhance the activity of photocatalysts. When the noble metal is in contact with the semiconductor surface, the carriers are redistributed and the electrons are transferred from TiO with a high Fermi level 2 Flowing to noble metals with low Fermi energy levels, micro batteries are formed to promote the separation of photogenerated electrons and holes, thereby improving photocatalytic activity. However, due to the scarcity and high price of precious metal resources, this severely limits the large-scale application of precious metals. As a common metal element, copper is widely distributed in resources and has a unique electronic stru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72C02F1/30C02F103/30
Inventor 王晟王騊欧阳申坤
Owner 苏州禹净环境科技有限责任公司
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