Phenyl-containing bactericide and graphene oxide-based composite bactericide and application of phenyl-containing bactericide and graphene oxide-based composite bactericide

Abstract

The invention discloses a phenyl-containing bactericide and graphene oxide-based composite bactericide and application of the phenyl-containing bactericide and graphene oxide based composite bactericide, relating to the field of bactericides. The composite bactericide is prepared by 1-30 parts of phenyl-containing bactericide and 15-70 parts of graphene oxide; the composite bactericide is used for preventing and controlling downy mildew, gray mold and blight of vegetables, leaf blight and helminthosporiun maydis of corns, and zonate leaf spot of fruit trees; the phenyl-containing bactericide can be uniformly loaded on the surface of graphene oxide due to electrostatic interaction and pi-pi stacking of phenyl group in the phenyl-containing bactericide and graphene oxide; graphene oxide has a single laminar structure and has strong mechanical strength, and can damage the bacterial cell structure to result in bacterial death; graphene oxide can be used for catalyzing the phenyl-containing bactericide loaded on the surface of the graphene oxide to generate carboxyl free radicals, therefore, the bactericidal effect of the phenyl-containing bactericide is enhanced, and the composite bactericide has good systemic property, strong seepage force, and good persistence and adhesive.

Description

technical field [0001] The invention relates to the field of fungicides, in particular to a compound fungicide based on a phenyl-containing fungicide and graphene oxide and its application. Background technique [0002] Phenyl-containing fungicides are a class of organic compounds containing benzene rings, which have a broad-spectrum bactericidal effect and have a good control effect on diseases caused by fungi such as Deuteromycetes and Ascomycotina. It is widely used in the disease control of rice, cotton, vegetables, fruit trees and medicinal materials. [0003] After long-term and large-scale use of phenyl-containing fungicides, the tolerance and resistance of fungi to drugs will increase. Normal doses of drugs are difficult to achieve the bactericidal effect, or even completely ineffective. [0004] At present, in order to solve the problem of fungal drug resistance, the method of increasing the dosage of drugs is usually adopted. Increasing the dosage of drugs will no...

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Problems solved by technology

[0008] (1) Both copper rosinate and hymexazol are prone to failure under alkaline conditions, and are difficult to be used in alkaline soils, and the scope of use is small

[0009] (2) After copper rosinate or hymexazol and carbendazim are compounded, the effective period is relatively short, the bioavailability is low, and the environmental pollution is relatively large

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