화학공학소재연구정보센터
Industrial & Engineering Chemistry Research, Vol.58, No.19, 8044-8049, 2019
Durability and Stability of Superhydrophobic Stainless Steel Mesh Supported Pure-Silica Zeolite Beta Coatings
The poor durability and stability of superhydrophobic materials under various working conditions limit their widespread applications. Zeolite films have attracted considerable attention owing to their good mechanical, thermal, and chemical stabilities. Stainless steel mesh (SSM) supported pure-silica zeolite beta (PSZB) coatings with superhydrophobicity were fabricated using secondary growth method. The durability and stability of SSM-supported PSZB coatings were investigated thoroughly after undergoing various treatments, including abrasion, corrosion, high temperature, and ultrasonication. The SSM-supported PSZB coatings could maintain their superhydrophobicity and high separation efficiencies above 99% with trace amount of oil contents in water as well as stable chloroform fluxes after abrasion for 80 cycles or exposure to corrosive media. The PSZB coating could keep a close attachment on the SSM support in high-temperature and ultrasonication environments. This work demonstrated the satisfactory durability and stability of SSM-supported PSZB coatings and gives promise for zeolite-coated SSMs in actual oil/water separation.