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A kind of sewage treatment catalyst and preparation method thereof

A sewage treatment and catalyst technology, which is applied in the direction of catalyst activation/preparation, light water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of poor sewage treatment effect, difficult separation and recovery, low catalytic activity, etc., to achieve The preparation method is simple and easy, the photocatalytic efficiency is high, and the luminous intensity is large

Active Publication Date: 2021-01-15
广东潮泰建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a catalyst for sewage treatment and a preparation method thereof. The preparation method is simple and easy, has low requirements on equipment, easy-to-obtain raw materials, convenient post-treatment, low price, and is suitable for large-scale production; the prepared sewage The treatment catalyst overcomes the defects of traditional photocatalysts represented by titanium dioxide, such as high cost, non-response to visible light, low catalytic activity, poor sewage treatment effect, and difficulty in separation and recovery.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing a sewage treatment catalyst, comprising the steps of:

[0028] 1) Add 30 g of nano-iron ferric oxide to 800 g of an aqueous solution of carbon quantum dots with a concentration of 10 mg / mL, ultrasonicate for 10 minutes, then pour it into a hydrothermal reaction kettle, and conduct a hydrothermal reaction at 185° C. for 1 hour, and then cool down to At room temperature, add n-butane to the system to settle, then filter, and then calcinate at 500°C under a nitrogen atmosphere to obtain carbon quantum dots supported by nano-ferric oxide;

[0029] 2) Disperse 28 g of carbon quantum dots supported by nanometer iron ferric oxide prepared in step 1) in 80 g of isopropanol, and add 4 g of epichlorohydrin and 4 g of n-butylammonium bromide to it, at 100 ° C Under reflux reaction for 6 hours, then cooled to room temperature, rotary evaporation to remove the organic solvent, to obtain carbon quantum dots supported by nanometer iron tetraoxide modified by epi...

Embodiment 2

[0034] A method for preparing a sewage treatment catalyst, comprising the steps of:

[0035] 1) Add 35g of nano-iron ferric oxide to 900g of an aqueous solution of carbon quantum dots with a concentration of 10mg / mL, ultrasonicate for 12 minutes, then pour it into a hydrothermal reaction kettle, perform a hydrothermal reaction at 190°C for 1.2 hours, and then cool down to At room temperature, add n-butane to the system for precipitation, then filter, and then calcinate at 550°C under a helium atmosphere to obtain carbon quantum dots supported by nano-ferric oxide;

[0036] 2) Disperse 32 g of carbon quantum dots supported by nano-ferric oxide prepared in step 1) in 92 g of dichloromethane, and add 5 g of epichlorohydrin and 4 g of n-butylammonium bromide to it, at 103 ° C Reflux reaction for 6.5 hours, then cool to room temperature, and remove the organic solvent by rotary evaporation to obtain carbon quantum dots supported by nanometer ferric oxide modified by epichlorohydrin...

Embodiment 3

[0041] A method for preparing a sewage treatment catalyst, comprising the steps of:

[0042]1) Add 40 g of nano-iron ferric oxide to 1000 g of an aqueous solution of carbon quantum dots with a concentration of 10 mg / mL, ultrasonicate for 13 minutes, then pour it into a hydrothermal reaction kettle, perform a hydrothermal reaction at 195 ° C for 1.5 hours, and then cool down to At room temperature, add n-butane to the system for precipitation, then filter, and then calcinate at 600°C under a neon atmosphere to obtain carbon quantum dots supported by nano-ferric oxide;

[0043] 2) Disperse 36 g of carbon quantum dots supported by nano-ferric oxide prepared in step 1) in 100 g of chloroform, and add 6 g of epichlorohydrin and 4 g of n-butylammonium bromide to it, and reflux at 105° C. 7 hours, then cooled to room temperature, and the organic solvent was removed by rotary evaporation to obtain carbon quantum dots supported by nano-ferric oxide modified by epichlorohydrin;

[0044...

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PUM

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Abstract

The invention discloses a preparation method of a sewage treatment catalyst, which includes the preparation of nanometer iron tetroxide-loaded carbon quantum dots, the preparation of epichlorohydrin-modified nanometer iron tetroxide-loaded carbon quantum dots, and the preparation of methylene blue-modified nanometer iron oxide-loaded carbon quantum dots. Preparation of ferroferric oxide loaded carbon quantum dots, ion exchange with amine persulfate and other steps. The invention also discloses a sewage treatment catalyst prepared according to the preparation method of the sewage treatment catalyst. The sewage treatment catalyst disclosed in the invention is cheaper, has more stable effective performance, higher photocatalytic efficiency, wider visible light response range, and more significant sewage treatment effect.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a photocatalyst for organic sewage treatment and a preparation method thereof. Background technique [0002] In recent years, with the development of the economy and the advancement of global industrialization, environmental problems have become increasingly prominent and have become an important factor restricting social progress. They are closely related to people's lives and directly or indirectly affect people's health. Among them , Water pollution is one of many environmental problems. With the strengthening of people's awareness of environmental protection and the formulation of laws and regulations on environmental protection in various countries, sewage discharge standards are becoming more and more stringent. Purification of sewage, especially organic sewage that is difficult to purify, is a major problem faced by enterprises with sewage discharge. How to treat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745B01J31/02B01J37/34B01J37/10B01J37/03C02F1/30C02F1/32C02F101/30C02F101/34C02F101/36C02F101/38
CPCC02F1/30C02F1/32B01J23/745B01J31/0254B01J37/031B01J37/10B01J37/343C02F2305/10C02F2101/38C02F2101/34C02F2101/36C02F2101/308B01J35/39
Inventor 董廷显刘彦
Owner 广东潮泰建设有限公司
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