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A two-step hydrothermal method for the preparation of mesoporous carbon-supported tio2 photocatalytic materials

A photocatalytic material and mesoporous preparation technology, applied in chemical instruments and methods, physical/chemical process catalysts, water pollutants, etc., can solve the problem of low degradation rate of photocatalytic materials, achieve simple equipment, mild preparation process, The effect of reducing the chance of impurities

Inactive Publication Date: 2016-01-20
HEILONGJIANG UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the technical problem of low degradation rate of the existing carbon material-loaded photocatalytic materials, and to provide a two-step hydrothermal method for preparing mesoporous carbon-loaded TiO 2 photocatalytic material approach

Method used

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  • A two-step hydrothermal method for the preparation of mesoporous carbon-supported tio2 photocatalytic materials
  • A two-step hydrothermal method for the preparation of mesoporous carbon-supported tio2 photocatalytic materials
  • A two-step hydrothermal method for the preparation of mesoporous carbon-supported tio2 photocatalytic materials

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specific Embodiment approach 1

[0030] Specific implementation mode 1: In this implementation mode, two-step hydrothermal method is used to prepare mesoporous carbon-supported TiO 2 The method of photocatalytic material is carried out according to the following steps:

[0031] 1. Add resorcinol, melamine, and formaldehyde into deionized water and stir until completely dissolved to obtain solution A. The concentration of resorcinol in solution A is 5.5-11g / L, and the concentration of melamine is 3-12g / L , the concentration of formaldehyde is 8-24g / L;

[0032] 2. Add deionized water to F127, and stir until completely dissolved to obtain solution B. The concentration of F127 in solution B is 9-18g / L;

[0033] 3. Add solution B dropwise to solution A while stirring, the volume ratio of solution B to solution A is 2:1, stir for 2 to 4 hours to obtain a mixed solution;

[0034] 4. Put the mixed solution into a hydrothermal kettle, conduct a hydrothermal reaction at a hydrothermal temperature of 120-180°C for 6-1...

specific Embodiment approach 2

[0038] Embodiment 2: This embodiment differs from Embodiment 1 in that the concentration of resorcinol in solution A in step 1 is 11 g / L. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0039] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the concentration of melamine in solution A in step 1 is 6 g / L. Others are the same as those in the first or second embodiment.

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Abstract

The invention relates to a method for preparing a mesoporous carbon loaded TiO2 (titanium dioxide) photocatalysis material in a two-step hydrothermal method, which relates to a method for preparing a photocatalysis material, and aims to the technical problem that an existing carbon material loaded photocatalysis material is low in degradation rate. The method disclosed by the invention comprises the following steps: I, preparing a solution A; II, preparing a solution B; III, dropwise adding the solution B into the solution A while in stirring to obtain a mixed solution; IV, preparing mesoporous carbon; and V, ultrasonically dispersing the mesoporous carbon into ethanol, adding tetrabutyl titanate, adding deionized water to obtain the mixed solution, and filling the mixed solution into a hydrothermal kettle to generate hydrothermal reaction to obtain the material. After the mesoporous carbon loaded TiO2 photocatalysis material prepared through the method is degraded for 2 hours in a photocatalysis manner, the degradation rate can reach more than 95 percent. The method belongs to the field of the preparation of the photocatalysis materials.

Description

technical field [0001] The invention relates to a method for preparing a photocatalytic material. Background technique [0002] Due to its excellent optical and electrical properties, mesoporous carbon has attracted extensive attention of researchers. It can be used as a performance-enhancing phase to compound with other nano-semiconductor materials to prepare composite materials with excellent performance. By combining mesoporous carbon with semiconductor nanomaterials, when the material is irradiated by light, photogenerated electrons can be transferred from semiconductor particles to mesoporous carbon, effectively preventing the recombination of photogenerated electrons and holes, and improving the lifetime of photogenerated electrons and holes. Thereby improving the photocatalytic efficiency and significantly improving the performance of photocatalytic materials. This composite material has potential applications in fields such as solar energy, lithium battery electrod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/18C02F1/30C02F101/34
CPCY02W10/37
Inventor 万家峰毕天娇刘洋史秉楠
Owner HEILONGJIANG UNIV
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