Method for preparing superhydrophobic surfaces by biomineralization

Abstract

The invention relates to a method for preparing a super-hydrophobic surface through a biomineralization method, comprising the following steps: step 1, washing the solid surface with absolute ethanol and acetone in sequence, drying, then soaking in inorganic acid, and finally using deionized Drying after washing with water; step 2, soak the pretreated solid surface into the mineralization solution, and add a mineralization regulator, and then place the solution soaked with the solid surface together with ammonium carbonate in a closed container at room temperature After standing for a period of time, take out the solid surface, rinse it with deionized water, and dry it to obtain a solid surface with a micron-nano secondary rough structure, which is ready for use; step 3, pass the solid surface with a rough structure through ionized water for one minute. A layer of gold is coated on the surface by sputtering, and then soaked in an ethanol solution whose solute is thiol. Finally, the solid surface is taken out and washed with absolute ethanol and dried to obtain a superhydrophobic surface with self-cleaning function.

Description

technical field [0001] The invention relates to a solid surface treatment technology, in particular to a method for preparing a superhydrophobic surface with a self-cleaning function by using a biomineralization method. Background technique [0002] It is generally considered that the contact angle of a water drop on a solid surface is greater than 150 o A solid surface is said to be superhydrophobic when it does not easily roll off the surface. There are a lot of strange natural super-hydrophobic surfaces in nature, such as the leaves of rice, the shells of beetles in the desert, the wings of butterflies and the soles of geckos, etc. With the in-depth study and understanding of these natural superhydrophobic phenomena, it has been found that the combination of multi-level rough structures and low surface energy coatings is a common feature of these superhydrophobic surfaces. A typical example that has been extensively studied is the surface of the lotus leaf. Its unique s...

AI Technical Summary

Problems solved by technology

At present, most of the research on simulating biomineralization in vitro focuses on using various templates to regulate the morphology and crystal form of inorganic minerals, so that people can easily prepare various inorganic minerals with complex shapes, but using this green, environmentally friendly However, there are still few researches and applications on the preparation of superhydrophobic surfaces by biomineralization with low energy consumption.

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