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BiOCl/expanded perlite floating photocatalyst and application thereof

A technology of expanded perlite and photocatalyst, which is applied in the direction of physical/chemical process catalysts, catalyst activation/preparation, chemical instruments and methods, etc., can solve the problems of low utilization rate of light energy, secondary pollution, powerlessness, etc. Energy utilization is low, the connection strength is enhanced, and the effect of uniform distribution is achieved

Inactive Publication Date: 2021-01-22
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of BiOCl photocatalysts in the actual environment is very challenging. The main reason is that the material is easy to aggregate and sink in the water environment, the light energy utilization rate is low, and it is difficult to separate from the environment for reuse. Some parts may also cause secondary pollution
Most importantly, ordinary powdered photocatalysts are powerless for the degradation of some hydrocarbons and esters that are not miscible with water and have a lower density than water.

Method used

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  • BiOCl/expanded perlite floating photocatalyst and application thereof
  • BiOCl/expanded perlite floating photocatalyst and application thereof
  • BiOCl/expanded perlite floating photocatalyst and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] 1g of Bi(NO 3 ) 3 ·5H 2 O was dissolved in 6ml of ethylene glycol solution, which was recorded as solution A; an equimolar amount of KCl was dissolved in an equal volume of deionized water, which was recorded as solution B. Add 0.35g of expanded perlite to solution A, let it stand for 60min, filter it out and add it to the KCl solution. Afterwards, the resulting mixture was transferred to a polytetrafluoroethylene-lined high-pressure hydrothermal reactor and heated at 160 °C for 45 min. After cooling to room temperature, the resulting product was dried at 80 °C for 15 h. Then BiOCl / expanded perlite was calcined in a tube furnace at 450°C for 60min to obtain BiOCl / expanded perlite composite BiOCl / EP-1.

Embodiment 2

[0040] 2g of Bi(NO 3 ) 3 ·5H 2 O was dissolved in 6ml of ethylene glycol solution, which was recorded as solution A; an equimolar amount of KCl was dissolved in an equal volume of deionized water, which was recorded as solution B. Add 0.35g of expanded perlite to solution A, let it stand for 60min, filter it out and add it to the KCl solution. Afterwards, the resulting mixture was transferred to a polytetrafluoroethylene-lined high-pressure hydrothermal reactor and heated at 160 °C for 45 min. After cooling to room temperature, the resulting product was dried at 80 °C for 15 h. Then BiOCl / expanded perlite was calcined in a tube furnace at 450°C for 60min to obtain BiOCl / expanded perlite composite BiOCl / EP-2.

Embodiment 3

[0042] 3g of Bi(NO 3 ) 3 ·5H 2 O was dissolved in 6ml of ethylene glycol solution, which was recorded as solution A; an equimolar amount of KCl was dissolved in an equal volume of deionized water, which was recorded as solution B. Add 0.35g of expanded perlite to solution A, let it stand for 60min, filter it out and add it to the KCl solution. Afterwards, the resulting mixture was transferred to a polytetrafluoroethylene-lined high-pressure hydrothermal reactor and heated at 160 °C for 45 min. After cooling to room temperature, the resulting product was dried at 80 °C for 15 h. Then BiOCl / expanded perlite was calcined in a tube furnace at 450°C for 60min to obtain BiOCl / expanded perlite composite BiOCl / EP-3.

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Abstract

The invention discloses a BiOCl / expanded perlite floating type photocatalyst, the BiOCl / expanded perlite floating type photocatalyst is obtained by calcining a BiOCl / EP composite material at a high temperature, and the BiOCl / EP composite material is composed of expanded perlite and BiOCl powder loaded in pores on the surface of the expanded perlite. The invention also discloses an application of the BiOCl / expanded perlite floating photocatalyst in degradation of organic dyes, hydrocarbons and esters. The BiOCl / expanded perlite floating photocatalyst disclosed by the invention has high catalytic degradation activity under simulated sunlight.

Description

technical field [0001] The invention relates to the technical field of photocatalysts, in particular to a BiOCl / expanded perlite floating photocatalyst and its application. Background technique [0002] With the rapid development of modern industry, the problem of environmental pollution is becoming more and more serious. Taking the problem of water pollution as an example, most organic dyes are soluble in water. These highly toxic and carcinogenic dyes are discharged with water bodies, causing serious damage to the water environment. Pollution and destruction; oil product leakage incidents occur frequently, causing harm to marine ecosystems. So far, many biochemical and physicochemical methods have been applied to treat organic dyes in wastewater. Among these methods, semiconductor photocatalysis technology using solar energy as an energy source is a new strategy for clean, sustainable and low energy consumption. favored by researchers. where TiO 2 Semiconductor photocat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/06B01J37/10B01J37/08C02F1/30C02F101/30C02F101/32C02F101/34
CPCB01J27/06B01J37/10B01J37/08C02F1/30C02F2305/10C02F2101/308C02F2101/32C02F2101/34B01J35/39
Inventor 刘湘尹金慧邱娟夏咏梅王海军
Owner JIANGNAN UNIV
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