Unlock instant, AI-driven research and patent intelligence for your innovation.

Photo-Fenton system producing H2O2

A technology of H2O2 and Fenton, applied in the direction of light water/sewage treatment, special compound water treatment, water/sludge/sewage treatment, etc., can solve the problems of low quantum efficiency, high recombination rate of photogenerated electrons and holes, and achieve Improve the effect of industrial application, good catalytic stability, and reduce processing costs

Inactive Publication Date: 2018-06-26
XIAN TECH UNIV
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, carbon-based superhard materials g-C 3 N 4 As a new type of metal-free photocatalyst that responds to visible light, it has gradually attracted people’s attention due to its narrow bandgap (about 2.7eV), good chemical stability, and simple preparation method, but the single g-C 3 N 4 It has the disadvantages of low quantum efficiency and high recombination rate of photogenerated electrons and holes.

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
  • Photo-Fenton system producing H2O2

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0015] A self-produced H 2 o 2 The photo-Fenton system is the g-C 3 N 4 / rGO according to mass ratio g-C 3 N 4: rGO=1:0.15 added to the Fenton system, the g-C 3 N 4 / rGO was prepared by the following method: take 5 g g-C 3 N 4 Particles, take 0.75 g rGO(g-C 3 N 4: rGO mass ratio 1:0.15), add a small amount of ethanol in the mortar, grind evenly, dry to remove absolute ethanol, transfer to a porcelain boat, and then put it into a nitrogen atmosphere protection tube furnace according to the heating program of 7°C / min Heated to 325°C for 4 h. The final obtained solid is ground into powder form and is g-C 3 N 4 / rGO. The present invention uses graphene-modified g-C with excellent electrical conductivity 3 N 4 , which effectively reduces the electron-hole recombination, enhances the oxidation efficiency and enables the continuous generation of H 2 o 2 , the catalyst improves the degradation rate of waste water, so that the system of the present invention can be wid...

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

No PUM Login to View More

Abstract

The invention relates to a Photo-Fenton system producing H2O2. Compared with a traditional Fenton system, the g-C3N4 / rGO photo-Fenton system solves the problem of H2O2 dosing. According to the photo-Fenton system producing H2O2, g-C3N4 / rGO is added into a Fenton system according to a mass ratio of g-C3N4: rGO=1:0.15. The graphene-modified g-C3N4 with excellent conductivity is adopted to effectively reduce electron-hole recombination, enhance oxidation efficiency and continuously generate H2O2. The catalyst improves the wastewater degradation rate, so that the system can be widely used on a large scale.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a self-produced H 2 o 2 The photo-Fenton system. Background technique [0002] Among advanced oxidation treatment technologies, Fenton technology has the characteristics of high treatment efficiency, relatively low cost, and easy industrialization. Its reagent Fe 2+ and H 2 o 2 Combined to generate highly reactive hydroxyl radicals (·OH), which can interact with most organic substances to degrade and even mineralize them. However, for the traditional Fenton reagent, it must be operated effectively at a lower pH value (pH=3), and the pH value needs to be adjusted repeatedly to meet the processing conditions; due to the presence of a large amount of iron ions, a large amount of iron sludge is produced after the reaction is completed Deposition; need to continuously add a large amount of H to the system 2 o 2 ,higher cost. In order to solve the bottlenec...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/30B01J27/24
CPCC02F1/30C02F1/722C02F1/725B01J27/24C02F2305/026B01J35/39
Inventor 王宇晶宋荷美吴小宁房剑高樱
Owner XIAN TECH UNIV