Preparation and Characterization of Biomimetic SiO2-TiO2-PDMS Composite Hydrophobic Coating with Self-Cleaning Properties for Wall Protection Applications

Superhydrophobic surfaces have great potential for self-cleaning, anti-icing, and drag-reducing characteristics because of their water repellent property. This study demonstrates the application coatings to protect architectures from detrimental atmospheric effects via a self-cleaning approach. In this research, SiO2-TiO2-PDMS composite coating was prepared on surface building walls by sol-gel method. Tetraethyl orthosilicate (TEOS) titanium isopropoxide (TTIP) were used as inorganic precursors, polydimethylsiloxane (PDMS) low energy substances. The TEOS PDMS content microstructure, wettability, performance wall investigated conducting various tests, including scanning electron microscopy (SEM), X-ray spectroscopy (EDS), angle measurement, Fourier transform infrared (FTIR). results indicated that hydrolysis condensation reactions TEOS, TTIP, performed substrates, leading micro- nano-structure similar lotus leaves. When molar ratio 1:5, static contact reached maximum 152.6°. At point, coated able resist adhesion particle pollutants liquid pollutants, which could keep clean possess good ability self-cleaning. conclusion, is potentially useful in protection applications with its hydrophobic environmentally friendly superhydrophobic properties.