Preparation method and application of ultrahigh-adhesiveness super-hydrophobic brass surface

Abstract

The invention provides a preparation method and application of an ultrahigh-adhesiveness super-hydrophobic brass surface. The preparation method comprises the steps of polishing pretreatment, ultrasonic cleaning, natural drying, etching treatment, ultrasonic cleaning, natural drying, constant-high-temperature heat treatment, low-surface-energy treatment, constant-temperature drying and the like on a blank H59 brass sample. The contact angle between the surface of the prepared brass substrate and liquid drops is as high as 174.5 degrees, and the brass substrate has ultrahigh adhesiveness and super-hydrophobicity. Meanwhile, the surface is applied to the field of heavy metal ion recovery, so that residues of heavy metal ions on the material surface in the evaporation process under the condition of hydrophilic spreading of waste liquid are avoided, secondary pollution to pretreatment equipment can be greatly reduced, and the whole process of recovery treatment of the heavy metal ions in wastewater is efficient and clean. In addition, the surface is also applied to SERS detection, so that the detection intensity of substances in a detection solution can be improved, the range of detectable concentration is expanded, and the correctness of a detection result is improved.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry, and in particular relates to a preparation method and an application of a super-adhesive super-hydrophobic brass surface. Background technique [0002] A superhydrophobic surface refers to a surface whose contact angle with water droplets is greater than 150°, such as lotus leaves, butterfly wings, fly eyes, locust wings, rose petals, gecko feet, etc. in nature. Among the many superhydrophobic surfaces, the lotus leaf is the most special, showing unusual superhydrophobic and self-cleaning properties. This phenomenon is called the "lotus leaf effect", which is due to the low surface area of ​​the lotus leaf. It is the result of the joint action of the energy waxy substance and the micro-nano rough structure. Unlike the low-adhesion superhydrophobic surface of lotus leaves, the highly-adhesive superhydrophobic surfaces exhibited by rose petals and gecko feet have higher adhesion and frict...

AI Technical Summary

Problems solved by technology

[0003] In recent years, researchers have prepared highly adhesive superhydrophobic surfaces through many methods, but the contact angle of the prepared surface is not high enough, and the preparation process is complicated, the preparation cycle is long and it is not easy to mass-produce, and it is mainly concentrated in the extreme Preparation of highly-adhesive superhydrophobic surfaces, very little research on the preparation of controllable highly-adhesive superhydrophobic surfaces

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