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

A technology of egg membrane and visible light, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, and water treatment of special compounds, can solve the problems of high cost and complicated preparation process, and achieve the promotion of promotion, promotion of catalytic activity, and reduction of waste Effects of waste disposal and environmental pollution pressures

Active Publication Date: 2019-10-08
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

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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 membrane composite visible light catalyst. The preparation method comprises the following steps that S1, egg membranes are driedand cut into pieces; S2, egg membrane fragments are calcined, and are grinded to particles after being calcined, and carbonized egg membranes are obtained; and S3, hydrochloric acid, deionized waterand ethanol are added to a Bi(NO3)3 solid body, then the carbonized egg membranes are added, ultrasonic treatment is carried out for 30-120 min, stirring is carried out for 30 min, a NaOH solution isadded in the stirring process, finally aging is carried out for 8-12 hours, liquid is filtered out, drying is carried out at 100 DEG C for 12-15 hours, finally the modified BiOCl/carbonized egg membrane catalyst is obtained, and the catalyst is applied to degradation of dye wastewater containing rhodamine B, antibiotic wastewater containing tetracycline hydrochloride and industrial wastewater containing organic pollutants. According to the preparation method of the BiOCl/carbonized egg membrane composite visible light catalyst, the pressure of waste treatment and environmental pollution can bereduced, waste is turned into treasure, and efficient catalytic degradation of the industrial waste water is realized.

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 Applications(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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