Method of wrapping hollow glass bead by virtue of dye-sensitized nanometer ferric oxide

A technology of nanometer ferric oxide and hollow glass microspheres, which is applied in the fields of chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc. In order to save raw materials, improve bonding fastness, and enhance photocatalytic activity

Inactive Publication Date: 2014-02-12
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a method for dye-sensitized nanometer ferric oxide coated hollow glass microspheres, which solves the problems of poor bonding fastness and weak photocatalytic activity between nanometer ferric oxide particles and hollow glass microspheres, Realized the generation and coating of nano-Fe2O3 in one step

Method used

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  • Method of wrapping hollow glass bead by virtue of dye-sensitized nanometer ferric oxide
  • Method of wrapping hollow glass bead by virtue of dye-sensitized nanometer ferric oxide
  • Method of wrapping hollow glass bead by virtue of dye-sensitized nanometer ferric oxide

Examples

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Effect test

Embodiment 1

[0083] Weigh 40g of hollow glass microspheres, add the weighed hollow glass microspheres into 1L of tap water, and mechanically stir at a rate of 100rpm at 50°C for 1h, then remove the hollow glass microspheres floating on the surface of the tap water out, and then carry out dehydration treatment to obtain hollow glass microspheres after flotation; weigh the hollow glass microspheres and sodium hydroxide after flotation respectively according to the mass ratio of 4:1, and add the weighed sodium hydroxide to Prepare a sodium hydroxide solution with a mass-volume concentration of 10g / L in deionized water; add the hollow glass beads after flotation to a mass-volume concentration of 10g / L sodium hydroxide solution at 60°C, Mechanically stir the hollow glass microspheres immersed in the sodium hydroxide solution for 35 minutes. After the hollow glass microspheres are taken out from the sodium hydroxide solution, the hollow glass microspheres are repeatedly washed with deionized wate...

Embodiment 2

[0089] Weigh 80g of hollow glass microspheres, add the weighed hollow glass microspheres into 1L tap water, and mechanically stir at a rate of 200rpm at 70°C for 1h, then remove the hollow glass microspheres floating on the surface of tap water out, and then carry out dehydration treatment to obtain hollow glass microspheres after flotation; weigh the hollow glass microspheres and sodium hydroxide after flotation respectively according to the mass ratio of 4:1, and add the weighed sodium hydroxide to Prepare a sodium hydroxide solution with a mass-volume concentration of 20g / L in deionized water; add the hollow glass microspheres after flotation to a mass-volume concentration of 20g / L sodium hydroxide solution at 90°C, Mechanically stir the hollow glass microspheres immersed in the sodium hydroxide solution for 25 minutes. After the hollow glass microspheres are taken out from the sodium hydroxide solution, the hollow glass microspheres are repeatedly washed with deionized wate...

Embodiment 3

[0095] Weigh 60g of hollow glass microspheres, add the weighed hollow glass microspheres into 1L of tap water, and mechanically stir at a rate of 150rpm at 60°C for 1h, then remove the hollow glass microspheres floating on the surface of the tap water out, and then carry out dehydration treatment to obtain hollow glass microspheres after flotation; respectively weigh the washed hollow glass microspheres and sodium hydroxide according to the mass ratio of 4:1, and add the weighed sodium hydroxide to the Prepare a sodium hydroxide solution with a mass-volume concentration of 15g / L in ionized water; add the hollow glass microspheres after flotation to the sodium hydroxide solution with a mass-volume concentration of 15g / L, and mechanically Stir the hollow glass microspheres soaked in the sodium hydroxide solution for 30 minutes. After the hollow glass microspheres are taken out from the sodium hydroxide solution, the hollow glass microspheres are repeatedly washed with deionized w...

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Abstract

The invention discloses a method of wrapping a hollow glass bead by virtue of dye-sensitized nanometer ferric oxide. The method concretely comprises the following steps: 1) pretreating the hollow glass bead to obtain a clean hollow glass bead; 2) preparing a modification treatment liquid, and carrying out enriched amination modification treatment on the surface of the hollow glass bead after pretreatment in the step one by virtue of the modification treatment liquid; 3) carrying out dye sensitization treatment on the hollow glass bead after amination modification in the step two; 4) wrapping the surface of the hollow glass bead after dye sensitization in the step three by virtue of the dye-sensitized nanometer ferric oxide. By adopting the method of wrapping the hollow glass bead by virtue of the dye-sensitized nanometer ferric oxide, the problems that the binding fastness of the nanometer ferric oxide and the hollow glass bead is weaker, and the photocatalytic activity is weak are solved, and the generation and wrapping of the nanometer ferric oxide are finished in one step.

Description

technical field [0001] The invention belongs to the technical field of functional inorganic non-metallic materials, and relates to a method for modifying the surface of hollow glass microspheres, in particular to a method for coating hollow glass microspheres with dye-sensitized nanometer ferric oxide. Background technique [0002] As an important inorganic pigment and fine ceramic material, nanometer ferric oxide not only has good light resistance, weather resistance and chemical stability, but also has high hardness, certain magnetic and photocatalytic activity, and is stable to temperature, Humidity and gas are relatively sensitive, so it has good application prospects in water quality treatment, organic matter degradation, magnetic recording and sensitive materials. The catalyst made of nano ferric oxide has higher activity and selectivity than ordinary catalysts, and has a long service life. Nano ferric oxide is made into hollow pellets, which float on the surface of w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28B01J37/02C02F1/30H01F1/01
Inventor 张辉杨振威刘玉琳石圆圆
Owner XI'AN POLYTECHNIC UNIVERSITY
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