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Preparation method of black titanium dioxide nano rod visible light catalyst

A technology of titanium dioxide and photocatalyst, which is applied in the field of preparation of visible light photocatalyst, can solve the problems of low charge transfer efficiency and low utilization rate of the catalyst, and achieve the effects of relatively low price, simple operation and simple experimental equipment.

Inactive Publication Date: 2015-11-18
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the technical problems of low utilization rate of sunlight by titanium dioxide prepared by the existing method and low charge transfer efficiency of titanium dioxide as a catalyst, and provides a preparation method of black titanium dioxide nanorod visible light photocatalyst

Method used

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  • Preparation method of black titanium dioxide nano rod visible light catalyst
  • Preparation method of black titanium dioxide nano rod visible light catalyst
  • Preparation method of black titanium dioxide nano rod visible light catalyst

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specific Embodiment approach 1

[0030] Specific embodiment one: this embodiment is a kind of preparation method of black titanium dioxide nanorod visible light photocatalyst is prepared according to the following method:

[0031] 1. Preparation of mixed solution: Dissolve ammonium chloride in isopropanol, then stir for 1min to 10min at a stirring speed of 15r / min to 30r / min, then add titanium source, and then stir at a stirring speed of 15r / min to 30r / min Stir for 10min to 50min at a stirring speed of 10min to 50min, then add ammonia water with a mass fraction of 25% to 28%, and then stir for 1min to 10min at a stirring speed of 15r / min to 30r / min to obtain a mixed solution;

[0032] The mass of ammonium chloride described in step 1 and the volume ratio of isopropanol are 1g:(0.5mL~100mL);

[0033] The mass of ammonium chloride described in step 1 and the volume ratio of titanium source are 1g:(0.005mL~5mL);

[0034] The volume ratio of the mass of ammonium chloride described in step 1 to the ammoniacal liq...

specific Embodiment approach 2

[0051] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the titanium source described in step 1 is titanium tetraisopropoxide. Others are the same as the first embodiment.

specific Embodiment approach 3

[0052] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that in step two, the mixed solution obtained in step one is added to the reactor, and then the reactor is reacted at a temperature of 150° C. for 60 h, Obtain the reaction solution. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method of a black titanium dioxide nano rod visible light catalyst and relates to a preparation method of a visible light catalyst which is mainly used for solving the technical problems that titanium dioxide prepared by the existing method has low utilization rate on the sunlight and has low electric charge transfer efficiency when taken as the catalyst. The method comprises the steps of firstly, preparing mixed liquor; secondly, preparing reaction liquor; thirdly, washing and drying; fourthly, carrying out ball milling; fifthly, calcining; and sixthly, washing and drying to obtain the black titanium dioxide nano rod visible light catalyst. The preparation method has the advantages that the rate of degrading rhodamine B by the black titanium dioxide nano rod is greater than 94%; the black titanium dioxide nano rod visible light catalyst prepared by the method is shaped like a rod, and has the size of 150nm-300nm. The invention acquires the preparation method of the black titanium dioxide nano rod visible light catalyst.

Description

technical field [0001] The invention relates to a preparation method of a visible light photocatalyst. Background technique [0002] In recent years, environmental pollution has become increasingly serious, especially the pollution of water bodies. Nano-titanium dioxide has been widely used in the field of photocatalytic sewage treatment due to its good photocatalytic activity, non-toxicity, high chemical stability, and no secondary pollution. Research. In addition, titanium dioxide has a wide band gap and can only absorb ultraviolet light, which only accounts for about 4% of the total energy of solar energy, so the utilization rate of sunlight is low. The black titanium dioxide can greatly enhance the absorption of visible light and near-infrared light. However, because the nano-titanium dioxide powder is easy to lose, it is not easy to recycle and reuse. The one-dimensional titanium dioxide nanorod array prepared by the hydrothermal method can effectively solve the prob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J35/10B82Y30/00B82Y40/00
Inventor 邢子鹏张妍张航刘雪峰朱琦周卫
Owner HEILONGJIANG UNIV
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