In Situ Growth of Nanoporous Covalent Organic Frameworks on Metal–Organic Framework Surfaces for Epoxy Coating Applications
Fuyan Kang, Guangyu Zhu, Chunxiao Yin, Dongchen Zheng, Min Wu, Yong Tan, Fa‐Qian Liu
Abstract
The Cu-MOF’s susceptibility to easy hydrolysis impairs its utility. A one-pot method was used to encapsulate nanoporous hydrophobic Im-COF on the surface of Cu-MOF. The hybrid Cu-MOF@Im-COF exhibited a water contact angle (WCA) of 100.9°. Cu-MOF/G@Im-COF was obtained by a grooming process (G) with 1H,1H,2H,2H-perfluorooctanetriethoxysilane and integrated with epoxy resin (E51) in two ways. The Cu 2+ release rate from the coatings, as determined by atomic absorption spectroscopy tests, was reduced to 0.01037 μg·cm –2 ·d –1 . In antimicrobial experiments with E. coli, the killing time was extended for 12 h. The Bode value increased to 1.4 × 10 10 Ω when immersed in a 3.5% NaCl solution for comparison. The self-cleaning and anti-icing test performance of the coatings was significantly improved with increasing WCA. Cu-MOF/G@Im-COF will have an even greater impact in more areas than just antimicrobial and corrosion resistance.