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A kind of method for preparing hollow gadolinium titanate tubular material

A technology for emptying gadolinium titanate and gadolinium titanate is applied in the field of preparing hollow gadolinium titanate tubular materials, which can solve the problems of weak adsorption capacity of environmental pollutants, influence on activity and use characteristics, limitation of photocatalytic activity, etc., and achieve novel preparation technology. , Good UV transmittance, high photocatalytic activity

Inactive Publication Date: 2019-01-04
SHENYANG LIGONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the preparation of titanate often requires a high-temperature heat treatment process, it usually leads to the agglomeration and growth of particles in the prepared material, which seriously affects its activity and use characteristics.
And due to the lack of pores in the material, the adsorption capacity of environmental pollutants is weak, which leads to the limitation of its photocatalytic activity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing hollow gadolinium titanate tubular material, comprising the following process steps:

[0024] Step 1: Preparation of gadolinium titanate precursor solution

[0025] Step 1.1: Add 50 mL of n-hexanol, 150 mL of absolute ethanol and 30 mL of p-xylene to a 500 mL three-neck round bottom flask in sequence, and place the flask in a constant temperature electric heating pack. A top-mounted electric stirrer is installed at the middle interface of the flask, and a stirring rod made of polytetrafluoroethylene material is used, and the stirring speed is 200 rpm; a temperature measuring thermoelectric corner and a spherical condenser tube are respectively installed at the other two flask interfaces, and the condenser tube adopts Tap water is the cooling medium;

[0026] Step 1.2: Adjust the heating power of the electric heating pack, control the temperature of the solution in the flask to 50 °C, heat and reflux at this temperature for 30 min, then add 25 mL ...

Embodiment 2

[0037] A method for preparing hollow gadolinium titanate tubular material, comprising the following process steps:

[0038] Step 1: Preparation of gadolinium titanate precursor solution

[0039] Step 1.1: Add 55 mL of n-hexanol, 180 mL of absolute ethanol and 35 mL of p-xylene to a 500 mL three-neck round bottom flask in sequence, and place the flask in a constant temperature electric heating pack. A top-mounted electric stirrer is installed at the middle interface of the flask, and a stirring rod made of polytetrafluoroethylene material is used, and the stirring speed is 200 rpm; a temperature measuring thermoelectric corner and a spherical condenser tube are respectively installed at the other two flask interfaces, and the condenser tube adopts Tap water is the cooling medium;

[0040] Step 1.2: Adjust the heating power of the electric heating pack, control the temperature of the solution in the flask to 50 °C, heat and reflux at this temperature for 30 min, then add 28 mL ...

Embodiment 3

[0051] A method for preparing hollow gadolinium titanate tubular material, comprising the following process steps:

[0052] Step 1: Preparation of gadolinium titanate precursor solution

[0053] Step 1.1: Add 60 mL of n-hexanol, 200 mL of absolute ethanol and 45 mL of p-xylene to a 500 mL three-necked round-bottom flask in sequence, and place the flask in a constant temperature electric heating pack. A top-mounted electric stirrer is installed at the middle interface of the flask, and a stirring rod made of polytetrafluoroethylene material is used, and the stirring speed is 200 rpm; a temperature measuring thermoelectric corner and a spherical condenser tube are respectively installed at the other two flask interfaces, and the condenser tube adopts Tap water is the cooling medium;

[0054] Step 1.2: Adjust the heating power of the electric heating pack, control the temperature of the solution in the flask to 50 °C, heat and reflux at this temperature for 30 min, then add 30 m...

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Abstract

A method for preparing a hollow gadolinium titanate tubular material comprises the following steps: preparation of a gadolinium titanate precursor: adding hexyl alcohol, anhydrous ethanol, p-xylene, isopropyl alcohol titanate, dimethyl distearylammonium chloride and a stabilizer TP-8 in a flask, heating and refuxing to form a solution 1, adding deionized water, gadolinium nitrate, ammonium sulfate, EDTA disodium salt and sodium bicarbonate in the flask to obtain a solution 2, adding the solution 2 in the solution 1, and heating and refluxing to form the gadolinium titanate precursor solution; pulling coating and drying: soaking a hollow quartz glass tube in the solution, then slowly upwards pulling the hollow quartz glass tube until the hollow quartz glass tube completely leaves away from the solution, insulating the hollow quartz glass tube for 12 hours at the temperature of 95 DEG C until the hollow quartz glass tube is completely dry, and repeating the process for 4 times; and high-temperature sintering: placing the quartz tube coated with the gadolinium titanate in a program control chamber electric furnace, heating to the temperature of 700-1,100 DEG C at the heating rate of 10 DEG C / minute, and maintaining for 3-10 hours to obtain the material.

Description

Technical field: [0001] The invention relates to a functional material that can be used in an environment purification process, and is a method for preparing a hollow gadolinium titanate tubular material. Background technique: [0002] After nearly half a century of research, people have placed high hopes on the application of photocatalytic oxidation technology in many fields, especially in countries with advanced technology levels that have carried out in-depth development of related applications and products. At present, products related to photocatalytic technology and materials are mostly concentrated in small civilian products, and photocatalytic materials that can be applied to large-scale industrial production are the focus of research in this field. Titanium oxide is the most widely and deeply researched photocatalytic material, and other materials mainly based on titanium-containing compounds are also emerging in this field. Among them, titanate, which has attract...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/22C01G23/00
CPCC01G23/003C03C17/003C03C17/22
Inventor 张文杰
Owner SHENYANG LIGONG UNIV