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A kind of preparation method of boron-containing cross-shaped titanium dioxide photocatalyst

A technology of titanium dioxide and photocatalyst, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, and hydrogen production. It can solve the problems of weak catalytic hydrogen production performance and complicated methods of photocatalysts. Simple process and low pollution effect

Active Publication Date: 2017-04-26
HARBIN INST OF TECH
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a boron-containing cross-shaped titanium dioxide photocatalyst in order to solve the problems that the existing methods for preparing titanium dioxide photocatalysts are complicated and the catalytic hydrogen production performance of the photocatalyst is relatively weak.

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  • A kind of preparation method of boron-containing cross-shaped titanium dioxide photocatalyst
  • A kind of preparation method of boron-containing cross-shaped titanium dioxide photocatalyst
  • A kind of preparation method of boron-containing cross-shaped titanium dioxide photocatalyst

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specific Embodiment approach 1

[0017] Specific embodiment one: the preparation method of boron-containing cross-shaped titanium dioxide photocatalyst of this embodiment is implemented according to the following steps:

[0018] 1. Put TiB 2 Add the powder into the reaction vessel, add a hydrochloric acid solution with a concentration of 0.2-0.8mol / L into the reaction vessel, and stir evenly with a magnetic force to obtain a turbid reaction liquid;

[0019] 2. Transfer the reaction turbid liquid obtained in step 1 into a polytetrafluoroethylene reaction kettle, seal it and put the reaction kettle into a constant temperature box for hydrothermal reaction at a temperature of 160-200°C to obtain a hydrothermal reaction solution ;

[0020] 3. Centrifuge the reaction liquid after hydroheating, wash the collected solid phase with deionized water for 3 to 5 times, and then wash with absolute ethanol for 3 to 5 times, and obtain boron-containing cross-shaped titanium dioxide photocatalyst after drying.

[0021] Thi...

specific Embodiment approach 2

[0024] Specific embodiment two: the difference between this embodiment and specific embodiment one is that TiB in step one 2 The particle diameter of the powder is 100-300nm. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0025] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 1, a hydrochloric acid solution with a concentration of 0.3-0.7 mol / L is added to the reaction vessel. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a preparation method of photocatalyst containing boron cross-shaped titanium dioxide, and relates to a preparation method of a photocatalyst material. The problems that the existing method for preparing the titanium dioxide photocatalyst is complex and the catalysis of the obtained titanium dioxide photocatalyst is weak are solved. The preparation method comprises the following steps: step one, adding TiB2 powder into a hydrochloric acid solution with concentration of 0.2-0.8mol / L, uniformly stirring to obtain a reacted turbid solution; step two, transferring the reacted turbid solution in a reaction kettle to perform hydrothermal reaction; step three, separating the collected solid-phase object, washing and drying to obtain the titanium dioxide photocatalyst. The process method is simple and the operation is convenient. The shape of the titanium dioxide is controlled to be in a cross shape by regulating the hydrochloric acid concentration in the reaction, the prepared photocatalyst material is uniform in powder particle, good in crystalline, high in purity and excellent in photocatalytic performance.

Description

technical field [0001] The invention belongs to the field of titanium dioxide photocatalytic materials in functional materials, and in particular relates to a preparation method of nanorod titanium dioxide powder. Background technique [0002] In the 21st century, human beings are facing two very serious problems of energy shortage and environmental pollution, and the development of clean and renewable energy is imminent. Hydrogen energy has the advantages of high combustion value and no environmental pollution of combustion products. Therefore, using solar energy to produce hydrogen through photocatalytic water splitting has become a new way to develop hydrogen energy, and has attracted great attention from researchers in related fields. [0003] After more than 30 years of research, a number of visible light-responsive catalyst systems have been developed so far, TiO 2 With its superior photocatalytic performance, chemical resistance, photochemical corrosion, low cost, n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/06C01B3/04
CPCY02E60/36
Inventor 于耀光张相彬陈刚敖冬飞马天晔贾政刚
Owner HARBIN INST OF TECH
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