A kind of preparation method of photosensitive quartz tube

A quartz tube and photosensitive technology is applied in the field of preparation of photosensitive quartz tubes, which can solve the problems of high energy consumption, peculiar smell, slow effect of decomposing oil and gas, and achieve the effects of reducing energy consumption, stable photocatalytic performance and simple process

Active Publication Date: 2017-10-24
JIANGSU SHENGDA QUARTZ PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are some glass tubes for photolysis on the market, but they have the characteristics of slow decomposition of oil and gas, peculiar smell, and high energy consumption.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Formula and preparation method: choose SiO 2 Quartz stone with a content of more than 99.95% is used as a raw material, and it is subjected to a series of pretreatment steps of acid leaching, calcination, water quenching, crushing, reactor pickling, flotation, sand baking, and high-temperature chlorination purification to obtain a purity of 99.99% % high-purity quartz sand; mix and pulverize alumina and bismuth silicate dopant in a certain proportion to obtain particles with a particle size ≤ 300 μm, mix and dissolve with water, and uniformly spray the obtained suspension under 0.8MPa pressure through an atomization device Spray on the high-purity quartz sand, the mass ratio of high-purity quartz sand, alumina and bismuth silicate is 1kg:0.076g:0.114g; Put the quartz sand sprayed with dopant into the sand baking machine for baking, baking The temperature is 850°C-900°C; after drying, it is packed in barrels and transported to the continuous melting furnace for feeding; ...

Embodiment 2

[0018] Recipe and preparation method: with embodiment 1.

[0019] The prepared quartz tube doped with alumina / bismuth silicate was applied to the photocatalytic degradation experiment, and the methyl orange aqueous solution was used as the target degradation product for photocatalytic degradation treatment, and the doped quartz tube was ground and ultrasonically pulverized to obtain a concentration of 1g / L , the concentration of methyl orange aqueous solution was 20mg / L, and the degradation rate of methyl orange reached 92.11% and 90.01% respectively after 3h of ultraviolet light irradiation and 5h of visible light irradiation.

Embodiment 3

[0021] Formula and preparation method: Change the mass ratio of high-purity quartz sand, alumina and bismuth silicate in Example 1 to 1kg:0.05g:0.1g, and keep other conditions unchanged.

[0022] The prepared quartz tube doped with alumina / bismuth silicate was applied to the photocatalytic degradation experiment. Rhodamine B was used as the target degradation product for photocatalytic degradation treatment, and the doped quartz tube was ground and ultrasonically pulverized to obtain a concentration of 1 g / L. The concentration of rhodamine B was 5mg / L, and the degradation rate of rhodamine B reached 83.81% and 82.05% respectively after 3h of ultraviolet light irradiation and 5h of visible light irradiation.

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Abstract

The invention provides a method for preparing a photosensitive quartz tube. The components of the photosensitive quartz tube include quartz sand, alumina, and bismuth silicate. The weight of the quartz sand is used as the basic unit, and the mass ratio of the dopant to the quartz sand is : Aluminum oxide 0.076‰, bismuth silicate 0.114‰. The quartz tube provided by the invention changes the thermal stability and light transmittance of the ordinary quartz glass tube, so that it has unique high photosensitivity. The photosensitive quartz tube has high-efficiency photocatalytic activity in the 185-500 wavelength range, and can photocatalytically oxidize and degrade organic compounds under visible light or ultraviolet light radiation. It can be widely used in residential water equipment, independent air purifiers, wall-mounted air purification equipment, pipeline air treatment units, urban water treatment systems, air treatment equipment, and reduce energy consumption. It is an environmentally friendly and clean new material.

Description

technical field [0001] The invention relates to the field of preparation of inorganic materials, in particular to a preparation method of a photosensitive quartz tube. Background technique [0002] The main component of the quartz tube is SiO 2 , its thermal expansion coefficient is small, has good high temperature resistance, thermal conductivity, thermal stability, optical properties, chemical stability, and has been more and more widely used in industrial and civilian products. At present, there are some glass tubes for photolysis on the market, but they have the characteristics of slow decomposition of oil and gas, peculiar smell, and high energy consumption. In recent years, bismuth-based semiconductor materials have become one of the research hotspots of new photocatalytic materials because of their good catalytic effect on refractory organic compounds under ultraviolet and visible light irradiation. Bismuth-based photocatalysts have obvious absorption in the visible...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C6/04
Inventor 段玉伟段其九韩凯蔡征海曹爱纬
Owner JIANGSU SHENGDA QUARTZ PROD CO LTD
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