Robi Kurniawan, Intan Salsabila Mauludina Sari, Dewi Sri Permata Sari, Isnaini Yulianingtyas, Soffy Septya Noviatin, Resti Marlina
Hydrophilic cotton fabric (WCA = 68°) was successfully converted to superhydrophobic (WCA > 150°) by coating the surface with ZnO nanoparticles (NPs) using the hydrothermal method without additional reagent. We noted that the ZnO particle size, as well as the sample surface density, increased with the higher precursor concentrations, forming hierarchical morphology. Interestingly, the coexistence of the excitonic state (~ 4 eV) and the defect state (2 - 3.2 eV) was observed, which has the potential for developing a water-repellent and anti-bacterial surface. The role of morphology on absorption and wettability properties is then studied comprehensively. Our results can be used as a strategy for designing water-repellent and anti-bacterial coatings for medical and textile applications. © 2023 American Institute of Physics Inc.. All rights reserved.
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Malang, 65145, Indonesia; Research Center for Biomaterials, Indonesia Institute of Sciences, Jl. Raya Bogor KM 46, Cibinong, 16911, Indonesia