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Preparation process of non-metal and graphene oxide co-doped light photocatalytic material

A technology of photocatalytic material and preparation process, which is applied in the field of photocatalytic material preparation to achieve the effect of improving photocatalytic ability and recyclability

Inactive Publication Date: 2018-10-02
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The photocatalytic technology represented by titanium dioxide has achieved rapid development in recent years, but there are still problems of photocatalytic efficiency and photocatalyst recovery in water treatment applications.

Method used

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  • Preparation process of non-metal and graphene oxide co-doped light photocatalytic material

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Experimental program
Comparison scheme
Effect test

Embodiment

[0023] The specific operation steps are as follows:

[0024] (1) Configure and disperse graphene oxide aqueous solution

[0025] A graphene oxide aqueous solution with a concentration of 0.02 g / L was prepared and put into an ultrasonic machine, the ultrasonic time was 10 min, and the ultrasonic frequency was 40 kHz.

[0026] (2) Configuration Solution A

[0027] Add thiourea at a ratio of 10 g / L to the graphene oxide aqueous solution, add absolute ethanol and acetic acid, the volume ratio of the graphene oxide aqueous solution to absolute ethanol is 1:5, and the graphene oxide aqueous solution to acetic acid volume ratio is 3:1. After adding nitric acid to adjust the pH to 2.0, stir for 3 min to obtain solution A.

[0028] (3) Configure solution B and prepare sol

[0029] Take the same volume of absolute ethanol as in step (2) and the same volume of butyl titanate as the solution in step (2) and mix evenly to form solution B, and add it to solution A at 3mL / min to form a so...

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Abstract

The invention discloses a preparation process of a non-metal and graphene oxide co-doped light photocatalytic material. The preparation process comprises the following steps of 1, preparing an aqueoussolution of graphene oxide and performing ultrasonic dispersion, adding thiourea, absolute ethanol and acetic acid into the solution, conducting stirring and using nitric acid to adjust the pH to obtain a solution A; 2, taking and uniformly mixing absolute ethanol with the same volume as absolute ethanol in step 1 and butyl titanate with the same volume as the solution A in step 1 to form a solution B; 3, dropwise adding the solution B into the solution A and mixing the solutions A and B uniformly to form sol; 4, uniformly mixing hollow microbeads with the sol, and conducting filtering, drying and sintering to obtain the light photocatalytic material. The photocatalytic capability of the photocatalytic material is improved through ion doping, and material recovery is achieved through loading.

Description

technical field [0001] The invention relates to a preparation process of non-metallic and graphene oxide co-doped light-weight photocatalytic materials, and belongs to the technical field of photocatalytic material preparation. Background technique [0002] Photocatalytic technology represented by titanium dioxide has achieved rapid development in recent years, but there are still problems in photocatalytic efficiency and photocatalyst recovery in water treatment applications. At the same time, it is difficult for pure titanium dioxide to have a good photocatalytic effect, and various modification methods can improve the photocatalytic effect of titanium dioxide. Non-metal doping is an important way, non-metal doping refers to doping non-metal elements into TiO 2 In the lattice, TiO is replaced by substitution 2 A small amount of lattice oxygen atoms, thereby expanding the TiO 2 The light absorption range of the photocatalyst improves its photocatalytic activity. In non-...

Claims

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Application Information

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IPC IPC(8): B01J31/38B01J35/00C02F1/30
CPCC02F1/30B01J31/38C02F2103/365C02F2209/08B01J35/31B01J35/39
Inventor 徐政王巍黄松涛杨丽梅程振纪仲光李岩
Owner GRIMAT ENG INST CO LTD