Preparation of novel ceramic membranes modified by mesoporous silica with 3-aminopropyltriethoxysilane (APTES) and its application to Cu2+ separation in the aqueous phase

High density silanization of nano-silica particles using γ-aminopropyltriethoxysilane (APTES)

“…Amino-terminated silica particles also has a large adsorption capacity and good selectivity for metal ions, such as Cu 2+ , Pb 2+ , Hg 2+ , thus it can be used as a chromatography stationary phase or adsorbent [3][4][5][6][7][8][9]. Since amino groups can react with proteins and DNA, these silica materials have important uses in the separation of biomaterials, enzyme immobilization and targeted medicine [10][11][12][13][14].…”

Preparation of amino-Fe(III) functionalized mesoporous silica for synergistic adsorption of tetracycline and copper

“…Among these methods, adsorption remains attractive because of its advantages of easy operation, energy savings and high removal capacity. Many adsorbents have been used to adsorb antibiotics or heavy metals from water separately, but fewer were used to remove them together (Figueroa et al, 2004;Ge et al, 2012;Ji et al, 2009;Oh et al, 2007;Sassman and Lee, 2005;Vu et al, 2010;Yang and Jiang, 2014;Hasan et al, 2013). In recent years, the cosorption of antibiotics and heavy metals from water by some adsorbents has been attracting increasing concern due to the realistic demands (Kang et al, 2010;Ling et al, 2013;Wang et al, 2008).…”

Silylation of clay mineral surfaces

“…The covalent bonding between organic components and clay minerals enables a durable immobilization of the organic moieties in the silylated products (da Fonseca and Airoldi, 2003;LeBaron et al, 1999;Takahashi and Kuroda, 2011), and prevents their leaching into the surrounding solutions. Meanwhile, by introducing special functional groups in the organosilane agents used, the adsorption selectivity of the resultant materials to contaminants could be greatly improved (Bergaya et al, 2006;da Fonseca and Airoldi, 2001;da Fonseca et al, 2000a;de Mello Ferreira Guimarães et al, 2009;Guerra et al, 2009;Oh et al, 2007;Sayılkan et al, 2004). In the resultant CPN, organosilane is a key bridge between clay minerals and polymer matrix, which provides silanol to condensate with M\OH on the clay mineral surfaces (M is Si, Al or other metals), and introduces special functional groups (e.g., \NH 2 , \SH) to react with the polymer matrix.…”