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Preparation method of vanadate photocatalytic material

A technology of photocatalytic materials and vanadate, which is applied in the field of preparation of vanadate photocatalytic materials, can solve the problems of poor purity, high price, and difficult removal of BiVO4, and achieve the effect of uniform particles, high purity, and simple equipment

Inactive Publication Date: 2012-08-08
HARBIN INST OF TECH
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Problems solved by technology

[0003] The present invention is to solve existing bismuth vanadate BiVO 4 The introduction of high-priced and difficult-to-remove organic additives during the preparation process leads to BiVO 4 Due to the technical problem of poor purity, a method for preparing a vanadate photocatalytic material is provided

Method used

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  • Preparation method of vanadate photocatalytic material
  • Preparation method of vanadate photocatalytic material
  • Preparation method of vanadate photocatalytic material

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specific Embodiment approach 1

[0012] Specific embodiment one: the preparation method of a kind of vanadate photocatalytic material of the present embodiment is carried out according to the following steps:

[0013] 1. According to bismuth nitrate (Bi(NO 3 ) 3 ·5H 2 O) and ammonium metavanadate (NH 4 VO 3 ) in a molar ratio of 1:1, weighed bismuth nitrate and ammonium metavanadate and added to nitric acid (HNO 3 ), under magnetic stirring, heated to 60-80°C to completely dissolve bismuth nitrate and ammonium metavanadate, and then adjust the pH value to 1-6.5 with ammonia water to obtain a mixed solution; wherein the mass percentage content of bismuth nitrate in the mixed solution 0.5% to 2%;

[0014] 2. Transfer the mixed solution obtained in step 1 to a polytetrafluoroethylene reactor, seal it and place it in an oven at 120-180°C for heat treatment for 6-12 hours;

[0015] 3. After the reaction kettle is lowered to room temperature, the obtained product is washed with ionized water, and then dried i...

specific Embodiment approach 2

[0017] Embodiment 2: This embodiment is different from Embodiment 1 in that: in step 1, heat to a temperature of 65-75°C. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0018] Embodiment 3: This embodiment is different from Embodiment 1 in that: in step 1, heat to a temperature of 70°C. Others are the same as in the first embodiment.

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Abstract

A preparation method of vanadate photocatalytic material. The invention relates to a preparation method of a photocatalytic material. The present invention aims to solve the problem that introduction of high valent and difficultly removed organic additives in the existing bismuth vanadate BiVO4 preparation process leads to poor purity of BiVO4. The method comprises the following steps: adding bismuth nitrate and ammonium metavanadate into the nitric acid, heating to dissolve, and adjusting the pH value to 1-6.5 to obtain a mixed solution; transferring the mixed solution to a reaction kettle, placing the reaction kettle into an oven with a temperature of 120-180 DEG C for heat treatment for 6-12 h, washing and drying to obtain the vanadate photocatalyst material. The photocatalytic material is vanadate BiVO4 with a hollow grading structure, has a construction unit of an octahedron or a truncated octahedron and a purity of not less than 99%, and can be used for degradation of organic pollutants.

Description

technical field [0001] The invention relates to a preparation method of a vanadate photocatalytic material. Background technique [0002] After entering the 21st century, global environmental pollution and energy crisis have increasingly become the two key factors restricting the progress of human civilization, and the elimination of environmental pollutants needs to consume a lot of energy, which brings the increasingly severe energy crisis presented a formidable challenge. In the context of creating a resource-saving and environment-friendly society in China, and under the background of the international resource and energy crisis, the vast number of scientific researchers have turned their attention to the inexhaustible and inexhaustible energy of solar energy. The development of clean energy is on the way, and the current semiconductor solar photocatalysis technology is a key point that well combines the two major issues of energy and the environment, because by irradia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/22B01J37/00A62D3/17A62D101/28
Inventor 陈刚孙净雪裴健熊桂洪董红军赵超
Owner HARBIN INST OF TECH
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