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Preparation and application of silver/strontium/titanium dioxide-graphene carbon nitride composite photocatalytic material

A composite photocatalysis, graphitic carbon nitride technology, applied in the field of photocatalytic materials, to achieve the effect of improving light capture ability, improving photocatalytic degradation and inhibiting recombination

Inactive Publication Date: 2019-07-16
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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Problems solved by technology

[0005] In view of this, the purpose of the present invention is to propose a preparation and application of a silver & strontium / titanium dioxide-graphene carbon nitride composite photocatalytic material to solve all or part of the deficiencies in the prior art

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  • Preparation and application of silver/strontium/titanium dioxide-graphene carbon nitride composite photocatalytic material
  • Preparation and application of silver/strontium/titanium dioxide-graphene carbon nitride composite photocatalytic material

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[0033] For the following, through the description of the examples, the specific implementation of the present invention, such as the manufacturing process involved, the operation and use method, etc., will be described in further detail, so as to help those skilled in the art to have a more complete concept of the invention and the technical solution of the present invention. , accurate and in-depth understanding.

[0034] RSM: Response Surface Method, is a statistical and experimental strategy to obtain optimal conditions for multivariate systems and has been successfully applied to different photocatalytic processes to achieve their optimization using experimental design.

[0035] In order to solve all or part of the deficiencies in the prior art, the preparation method of the silver & strontium / titanium dioxide-graphene carbon nitride composite photocatalytic material provided by the embodiment of the present invention includes the following steps,

[0036] 1) g-C 3 N 4 P...

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Abstract

The invention discloses preparation and application of a silver / strontium / titanium dioxide-graphene carbon nitride composite photocatalytic material, and relates to the technical field of photocatalytic materials. According to the preparation and application provided by the invention, doping of Ag / Sr nanoparticles and a heterojunction structure formed by TiO2 and g-C3N4 play an important role in broadening a light absorption range of the catalyst Sr / Ag-TiO2@g-C3N4 and improving the photocatalytic activity; main influence factors affecting the photocatalytic efficiency such as a usage amount ofthe catalyst, illumination time, a pH and an RB-42 concentration are optimized by using an RSM model, and under the optimized conditions, 95% of RB-42 dye molecules are subjected to photocatalytic oxidation degradation; and the Sr / Ag-TiO2@g-C3N4 co-doped photocatalyst has certain application prospects to removal of dyeing macro-molecular refractory organic contaminants.

Description

technical field [0001] The invention relates to the technical field of photocatalytic materials, in particular to the preparation and application of a silver & strontium / titanium dioxide-graphene carbon nitride composite photocatalytic material. Background technique [0002] A large number of synthetic organic dyes are used every year in textiles, paints, pharmaceuticals and many other industries. The unconventional handling and disposal of these hazardous dye pollutants has expanded to water pollution levels, which has become a global environmental problem. Among the different types of dyes with more than 3000 types, azo dyes constitute one of the largest and most diverse groups of synthetic organic dyes. These dye molecules are characterized by the presence of one or more azo groups (-N=N-), which act as a bridge between two organic moieties, linking the aromatic ring to another organic entity. These azo dyes can be transformed into different toxic aromatic amine compoun...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C02F1/30C02F101/30
CPCB01J27/24C02F1/30C02F2101/30B01J35/39
Inventor 徐晓平韦学玉杨晓凡刘志刚纳拉金蒂黄海宁
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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