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A kind of reduced graphene oxide coated iron titanate composite catalytic material and its preparation method and application

A technology of graphene coating and catalytic materials, applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc. Large, easy sintering and other problems, to achieve the effect of rich surface active centers, uniform particle size, and complete coating

Active Publication Date: 2019-08-23
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims to solve the existing technical problems of iron titanate with large particle size, easy sintering, few surface active sites and huge energy consumption, and provides a reduced graphene oxide-coated iron titanate composite catalytic material and its Preparation method and application

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  • A kind of reduced graphene oxide coated iron titanate composite catalytic material and its preparation method and application
  • A kind of reduced graphene oxide coated iron titanate composite catalytic material and its preparation method and application
  • A kind of reduced graphene oxide coated iron titanate composite catalytic material and its preparation method and application

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specific Embodiment approach 1

[0026] Specific embodiment 1: This embodiment is a reduced graphene oxide-coated ferric titanate composite catalytic material, the particle size is 200nm-800nm, the thickness is 30nm-50nm, hexagonal shape, surface-coated reduction-oxidation The thickness of the graphene is 2nm-10nm, and the coating is uniform and complete.

specific Embodiment approach 2

[0027] Specific embodiment two: this embodiment is the preparation method of the reduced graphene oxide-coated iron titanate composite catalytic material in specific embodiment one, is specifically carried out according to the following steps:

[0028] Dissolve titanium salt and iron salt in deionized water to obtain a mixed aqueous solution of titanium salt and iron salt; dissolve the morphology control agent in the mixed aqueous solution of titanium salt and iron salt, and then add a precipitant to obtain a precursor of iron and titanium hydroxide body suspension, adding the mixed aqueous solution of graphene oxide and urea to obtain the mixture, then adding an organic solvent, stirring evenly, and then transferring it into a hydrothermal kettle, reacting at a temperature of 160°C to 220°C for 12h to 24h, and finally Washing and drying to obtain the reduced graphene oxide-coated iron titanate composite catalytic material;

[0029] In the mixed solution of titanium salt and i...

specific Embodiment approach 3

[0035] Specific embodiment 3: The difference between this embodiment and specific embodiment 2 is that the titanium salt is titanium sulfate, tetrabutyl titanate, isopropyl titanate, titanium oxysulfate, hexafluorotitanic acid, fluorotitanic acid Potassium, ammonium fluorotitanate, tetraethyl titanate, titanium tetrachloride, titanium trichloride, or potassium titanium oxalate. Others are the same as in the second embodiment.

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Abstract

A reduced graphene oxide coated iron titanate composite catalytic material and its preparation method and application, which relates to an iron titanate catalytic material and its preparation method and application. The invention is to solve the existing technical problems of large particle size of iron titanate, easy sintering, few surface active sites and huge energy consumption. The composite catalytic material of the present invention has a hexagonal shape, and the reduced graphene oxide coated on the surface is uniform and complete. In the present invention, titanium salt and iron salt are dissolved in deionized water, morphology control agent, precipitant, graphene oxide, urea and organic solvent are added, and it is prepared by hydrothermal reaction. The catalytic material of the present invention can be applied to photo-Fenton degradation of organic pollutants in water. The reduced graphene oxide-coated iron titanate composite catalytic material prepared by the present invention has a better effect than the uncoated iron titanate composite catalytic material when used in photo-Fenton treatment of organic pollution. The invention is applied in the field of water treatment.

Description

technical field [0001] The invention relates to a ferric titanate catalytic material and its preparation method and application Background technique [0002] Semiconductor metal oxides with a perovskite structure are currently widely used in industrial production due to their general characteristics of stable structure, environmental friendliness, and high safety. And its other special characteristics, such as strong light absorption performance, large capacity, long cycle life, etc., enable it to be used in the research and development of photocatalysis, electrode materials, and battery materials. [0003] Most of the natural metal elements in the perovskite structure are stable, and new multi-component perovskite-type composite oxides can be formed by substituting or doping sites, thus having stable physical and chemical properties. Among them, iron titanate (FeTiO 3 ) as a commonly used perovskite family has the characteristics of easy-to-obtain raw materials, safety an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745B01J37/10B01J37/02C02F1/30C02F1/72
CPCC02F1/30C02F1/722C02F1/725B01J23/745B01J37/0215B01J37/10C02F2305/10C02F2305/026B01J35/398B01J35/23B01J35/39
Inventor 马军汪达徐浩丹卢晓辉
Owner HARBIN INST OF TECH
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