Synthesis of superhydrophobic coatings based on silica nanostructure modified with organosilane compounds by sol-gel method for glass surfaces

In the present study, the superhydrophobic coating was synthesized by spherical silica nanostructures modified with organosilane compounds for glass surfaces. To optimize the conditions in terms of cost-effectiveness and create a super-hydrophobic coating with a high contact angle, the response surface method of the central composite design (CCD) model was performed for the Stober method, and the contact angle was defined as the response surface for the model. Tetraethoxysilane (TEOS) was used as a precursor and poly(dimethylsiloxane) (PDMS) was used to modify the surface of a spherical silica nanostructure synthesized by a one-step sol-gel method using a base catalyst. The accuracy of the research was checked by the contact angle measurement test and an angle of 162 degrees was obtained. XRD, FT-IR, EDS, SEM, DLS, and AFM analyzes were performed to investigate the synthesis of silica nanostructure. Chemical resistance was performed in acidic, neutral, and alkaline environments and the contact angles were 127 degrees, 134 degrees, and 90 degrees, respectively, which indicates that the coating created on the surface glass has good chemical resistance in acidic and neutral environments.

Automated summary

A superhydrophobic coating was synthesized for glass surfaces using spherical silica nanostructures modified with organosilane compounds. The central composite design (CCD) model of the response surface method was employed to optimize the conditions and achieve a high contact angle for the hydrophobic coating. Tetraethoxysilane (TEOS) was used as a precursor and poly(dimethylsiloxane) (PDMS) was used for surface modification of the silica nanostructure. Experimental tests confirmed the accuracy of the research, yielding a contact angle of 162 degrees. XRD, FT-IR, EDS, SEM, DLS, and AFM analyses were conducted to investigate the synthesis of the silica nanostructure. Chemical resistance tests showed that the coating exhibited good resistance in acidic and neutral environments, with contact angles of 127 degrees and 134 degrees, respectively.