Room temperature and ambient pressure deposition of Cu-BTC MOF on SBA-15 functionalized silica supports by simple spray layer-by-layer method

Abstract

Metal-organic frameworks (MOFs) have received intense interest over the past decade due to its wide application such as catalysis, membrane-based gas separation, gas adsorption, sensing, and biomedical devices. Growth of MOFs on different solid surfaces allows improving their mechanical properties. Silica is a potential candidate. Due to the difficulty of rising Cu-BTC MOF on silica substrate our group was motivated to achieve a successful coating. This work outlines the functionalization of the gold surface through the MHDA self-assembled monolayer (SAM) and the construction of a MOF film (SURMOF) of Cu-BTC upward. The same MOF was also grown onto a modified mesoporous SBA-15 silica substrate. The first obtained silica particles were previously conformed and activated to receive the MOF. The layer-by-layer method was used to deposit MOF onto the substrates. The deposited MOFs films were characterized by X- ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) showed SBA-15 as a potential MOF support.