Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Visible light-ozone synergistic catalysis catalyst and preparation method thereof

A technology of synergistic catalysis and catalyst, applied in physical/chemical process catalysts, chemical instruments and methods, oxidized water/sewage treatment, etc., can solve problems such as easy recombination of photogenerated electrons and holes, poor visible light response, and difficult recovery of powdered catalysts , to achieve rapid and efficient separation and recovery, high-efficiency recovery, excellent cycle stability and activity

Pending Publication Date: 2020-09-15
CCTEG CHINA COAL RES INST
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to prepare a new photocatalyst material with visible light response, to solve the problems of poor visible light response of existing catalysts, easy recombination of photogenerated electrons and holes, difficult recovery of powdered catalysts, and low removal efficiency of organic matter in wastewater.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Visible light-ozone synergistic catalysis catalyst and preparation method thereof
  • Visible light-ozone synergistic catalysis catalyst and preparation method thereof
  • Visible light-ozone synergistic catalysis catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: visible light-ozone synergistic catalyst-10%rGH / ZnO-g-C 3 N 4 airgel (10% refers to ZnO-g-C 3 N 4 Mass fraction of rGH ) and its preparation method:

[0032] (1) Preparation of ZnO-g-C 3 N 4 : Weigh 5g of dicyandiamide and 0.5g of zinc nitrate into a 150ml beaker, add 100ml of distilled water, stir at 80°C for 1h, and then dry in an oven. Put the dried sample into a crucible, and carry out covered calcining in a tube furnace under a nitrogen atmosphere. The heating parameters are set as follows: from room temperature to 550°C, and the heating rate is 2°C·min -1 , keep a constant temperature of 550 ° C for 4 hours, and finally cool naturally, grind the calcined product carefully, and the obtained powder is ZnO-g-C 3 N 4 catalyst.

[0033] (2) Preparation of 10% rGH / ZnO-g-C 3 N 4 Airgel: Take 2g ZnO-g-C 3 N 4 Put the catalyst, 20ml GO solution, 0.6g ascorbic acid and 0.5ml polyethylene glycol into an agate jar, add agate beads, and ball mill a...

Embodiment 2

[0034] Embodiment 2: visible light-ozone synergistic catalyst-15%rGH / ZnO-g-C 3 N 4 airgel (15% refers to ZnO-g-C 3 N 4 Mass fraction of rGH ) and its preparation method:

[0035] (1) Preparation of ZnO-g-C 3 N 4 : Weigh 5g of dicyandiamide and 0.5g of zinc nitrate into a 150ml beaker, add 100ml of distilled water, stir at 80°C for 1h, and then dry in an oven. Put the dried sample into a crucible, and carry out covered calcining in a tube furnace under a nitrogen atmosphere. The heating parameters are set as follows: from room temperature to 550°C, and the heating rate is 2°C·min -1 , keep a constant temperature of 550 ° C for 4 hours, and finally cool naturally, grind the calcined product carefully, and the obtained powder is ZnO-g-C 3 N 4 catalyst.

[0036] (2) Preparation of 15% rGH / ZnO-g-C 3 N 4 Airgel: take 3g ZnO-g-C 3 N 4 Put the catalyst, 20ml GO solution, 0.6g ascorbic acid and 0.5ml polyethylene glycol into an agate jar, add agate beads, and ball mill a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Cod valueaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a catalyst for visible light-ozone synergistic catalysis and the catalyst prepared by the preparation method. The preparation method of the catalyst comprises the following steps of: preparing an active component ZnO-g-C3N4 and preparing the reduced graphene hybrid ZnO-g-C3N4 aerogel. By forming a Z-type heterojunction powder catalyst material ZnO-g-C3N4 from g-C3N4 and ZnO and loading the powder catalyst material ZnO-g-C3N4 onto a graphene gel framework with a three-dimensional structure, the obtained reduced graphene hybrid ZnO-g-C3N4 aerogel catalyst has excellent degradation efficiency on organic pollutants under visible light-ozone synergistic catalysis, and meanwhile, rapid and efficient separation and recovery of the catalyst are realized, so that the prepared catalyst has excellent cycling stability activity.

Description

technical field [0001] The invention relates to a preparation method of a visible light-ozone synergistic catalyst suitable for the treatment of high-salt wastewater in coal chemical industry, especially a visible light-ozone synergistic catalyst for the removal of refractory heterocyclic compounds in high-salt wastewater. The catalyst is a A "semiconductor-semiconductor / graphene" composite catalyst is used in the technical field of wastewater treatment and belongs to the field of industrial catalysis. Background technique [0002] In recent years, the degradation of refractory organic pollutants has attracted widespread attention because they have caused great harm to the natural environment and human health. In particular, the high-concentration brine produced by the coal chemical production process contains a large amount of refractory organic substances such as PAHs, heterocyclic compounds, etc. These substances usually have complex aromatic molecular structures, which m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J27/24B01J35/10C02F1/30C02F1/72C02F1/78C02F101/30C02F101/34C02F101/36C02F103/34
CPCB01J27/24C02F1/30C02F1/725C02F1/78C02F2101/345C02F2101/36C02F2101/30C02F2103/34B01J35/23B01J35/61B01J35/39Y02W10/37
Inventor 马栋李兰廷李文博王吉坤高明龙刘敏陈贵锋
Owner CCTEG CHINA COAL RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com