Preparation method and application of biocl/carbonized egg membrane composite visible light catalyst

A technology of egg membrane and catalyst, applied in physical/chemical process catalysts, chemical instruments and methods, water treatment of special compounds, etc., can solve the problems of complex preparation process and high cost, and achieve the promotion of catalytic activity, promotion and promotion. Applied effect

Active Publication Date: 2022-02-08
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned modification methods generally have disadvantages such as high cost and complicated preparation process.

Method used

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  • Preparation method and application of biocl/carbonized egg membrane composite visible light catalyst
  • Preparation method and application of biocl/carbonized egg membrane composite visible light catalyst
  • Preparation method and application of biocl/carbonized egg membrane composite visible light catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0037]Preparation of Carbon Quantum Dots Modified BiOCl / Carbonized Egg Membrane Composite Visible Light Catalyst:

[0038] Collect discarded egg shells, wash the egg shells with clean water, and then soak the washed egg shells in dilute hydrochloric acid, where the concentration of dilute hydrochloric acid is 0.5mol / L. Rinse well, dry at 60°C and cut into pieces with scissors to obtain egg membrane fragments; put the obtained egg membrane fragments into a muffle furnace for calcination under a nitrogen atmosphere, heat at a heating rate of 5°C / min to 550°C for 2 hours, A black solid can be obtained, which can be ground into particles to obtain carbonized egg membrane, which is recorded as: CESM.

[0039] To 1.86g Bi(NO 3 ) 3 Add 25 mL of hydrochloric acid with a concentration of 2 mol / L, 20 mL of deionized water and 10 mL of ethanol to the solid, then add 0.05 g of carbonized egg membrane, ultrasonicate for 30 min, add 20 mL of NaOH solution with a concentration of 4 mol / L d...

Embodiment 2

[0042] Preparation of BiOCl photocatalyst modified by eggshell waste:

[0043] Collect discarded egg shells, wash the egg shells with clean water, and then soak the cleaned egg shells in dilute hydrochloric acid, wherein the concentration of dilute hydrochloric acid is 0.5mol / L. Rinse well, dry at 60°C and cut into pieces with scissors to obtain egg membrane fragments; put the obtained egg membrane fragments into a muffle furnace for calcination under a nitrogen atmosphere, heat at a heating rate of 5°C / min to 550°C for 2 hours, A black solid can be obtained, which is ground into particles to obtain carbonized egg membrane, which is recorded as CESM;

[0044] To 1.86g Bi(NO 3 ) 3 Add 25mL of hydrochloric acid solution with a concentration of 2mol / L, 20mL of deionized water and 10mL of ethanol to the solid, then add 0.01g of carbonized egg membrane, ultrasonicate for 30min, and add 20mL of NaOH solution with a concentration of 4mol / L during continuous stirring for 30min. Fin...

Embodiment 3

[0046] Preparation of BiOCl photocatalyst modified by eggshell waste:

[0047] Collect discarded egg shells, wash the egg shells with clean water, and then soak the cleaned egg shells in dilute hydrochloric acid, wherein the concentration of dilute hydrochloric acid is 0.5mol / L. Rinse well, dry at 60°C and cut into pieces with scissors to obtain egg membrane fragments; put the obtained egg membrane fragments into a muffle furnace for calcination under a nitrogen atmosphere, heat at a heating rate of 5°C / min to 550°C for 2 hours, A black solid can be obtained, which is ground into particles to obtain carbonized egg membrane, which is recorded as CESM;

[0048] To 1.86g Bi(NO 3 ) 3 Add 25mL of hydrochloric acid solution with a concentration of 2mol / L, 20mL of deionized water and 10mL of ethanol to the solid, and then add 0.1g of carbonized egg membrane, sonicate for 30min, and add 20mL of NaOH solution with a concentration of 4mol / L during continuous stirring for 30min. Final...

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Abstract

The invention relates to a preparation method of a BiOCl / carbonized egg film composite visible light catalyst, comprising the following steps: S1, drying and shredding the egg film; S2, calcining the egg film fragments, and grinding them into particles after calcining to obtain carbonized egg film; S3 , to Bi(NO 3 ) 3 Add hydrochloric acid, deionized water and ethanol to the solid, then add carbonized egg membrane, sonicate for 30-120 minutes, stir for 30 minutes, add NaOH solution during the stirring process, and finally age for 8-12 hours, filter out the liquid, and dry at 100°C for 12 hours. After ~15h, the modified BiOCl / carbonized egg membrane catalyst was finally obtained, and the catalyst was applied to the degradation of dye wastewater containing rhodamine B, antibiotic wastewater containing tetracycline hydrochloride and industrial wastewater containing organic pollutants. The invention can reduce the pressure of waste treatment and environmental pollution, turn waste into wealth, and realize efficient catalytic degradation of industrial waste water.

Description

technical field [0001] The invention relates to the technical field of photocatalysts, in particular to a preparation method and application of a BiOCl / carbonized egg membrane composite visible light catalyst. Background technique [0002] With the rapid development of industry, the discharge of various types of industrial wastewater has increased rapidly, leading to increasingly serious problems of water body environment and water resource pollution, which in turn threaten human health and safety. Among them, organic pollutants in wastewater have the characteristics of high toxicity, chemical stability, and difficulty in biodegradation, and can absorb and reflect sunlight entering the water, interfere with the growth of bacteria and other organisms, and cause very serious harm to the ecological environment. How to efficiently treat organic pollutants in industrial wastewater has become an urgent problem to be solved in the field of environmental protection technology at hom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/06B01J35/10C02F1/30C02F101/30
CPCB01J27/06B01J35/004B01J35/1004B01J35/0033C02F1/30C02F2305/10C02F2101/30C02F2101/308
Inventor 黄微雅周勤张川群沈赵琪杨凯陈喜蓉
Owner JIANGXI UNIV OF SCI & TECH
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