Functionalization of cubic mesoporous silica SBA-16 with carboxylic acid via one-pot synthesis route for effective removal of cationic dyes

Tsai, Cheng Hsun; Chang, Wei; Saikia, Diganta; Wu, Chunli; Kao, Hsien Ming

doi:10.1016/j.jhazmat.2015.08.051

Cited by 123 publications

(45 citation statements)

References 71 publications

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“…Many different pendant functional groups has been successfully attached by co-condensation and/or grafting including hydrocarbon groups (e.g., alkyl (Barczak et al 2009a;Li et al 2015), vinyl (Barczak et al 2009bWang et al 2004), phenyl (Barczak et al 2010b;Fan et al 2017;Huang et al 2013)) as well as the groups with complexing properties (amine (Barczak et al 2013;Chong and Zhao 2003;Dobrowolski et al 2013;Zhu et al 2012), thiol (Barczak et al 2016Crudden et al 2005;Liu et al 2000), pyridine (Barczak 2018), carboxyl (Han et al 2007;Shen et al 2008;Tsai et al 2016)). Co-condensation also allows for incorporation of bridged multi-silylated monomers resulting in the so-called periodic mesoporous organosilicas (Asefa et al 1999;Inagaki et al 2002;Mizoshita et al 2011;Yoshina-Ishii et al 1999).…”

Section: Introductionmentioning

confidence: 99%

Influence of bridged monomer on porosity and sorption properties of mesoporous silicas functionalized with diethylenetriamine groups

et al. 2019

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Mesoporous organosilicas functionalized simultaneously with both pendant amine groups and ethylene/phenylene bridges, were synthesized to evaluate the effect of the bridges incorporated in the silica framework on the structure, porosity and adsorption properties of final materials. It turned out that the presence of the bridges enhanced the formation of porosity but adversely affected the efficiency of amination. DFT theoretical calculation showed that the amine groups can be partially bonded by phenyl groups of the bridges. The obtained materials were tested as sorbents of diclofenac, which is considered as one of the most prominent hazardous pharmaceuticals. High uptakes of diclofenac reaching 842 mg g −1 proved that the obtained materials could be applied for removal of drugs from waters and wastewaters, particularly when high concentrations of pharmaceutical are considered. For the phenylene bridged-based materials the diclofenac adsorption occurs only in the pores while for the others also on the external surface as indicated by different diclofenac desorption kinetics-this observation can be used to modulate the releasing profiles of drugs via proper design of the surface.

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Section: Introductionmentioning

confidence: 99%

Influence of bridged monomer on porosity and sorption properties of mesoporous silicas functionalized with diethylenetriamine groups

et al. 2019

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“…where K t is the equilibrium binding constant (L g −1 ) and B is related to the heat of adsorption for the relationship B = RT / b where b is the Temkin constant (J mol −1 ), T = absolute temperature (K), and R = gas constant (8.314 J mol −1 K −1 ). A plot of q e vs ln C e permits the determination of the isotherm constants B and K T from the slope and the intercept, respectively …”

Section: Resultsmentioning

confidence: 99%

Adsorption performance of mesoporous silicas towards a cationic dye. Influence of mesostructure on adsorption capacity

Meléndez‐Ortiz

Puente-Urbina²,

Mercado-Silva³

et al. 2019

Int J Applied Ceramic Tech

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The dye adsorption performance of four mesoporous silicas with different structure and textural properties, MCM-41, MCM-48, SBA-15 and mesocellular silica foam (MCF), was studied and compared by using toluidine blue O (TBO) as dye model in aqueous solution. These materials were characterized by X-ray diffraction (XRD), small-angle X-ray scattering, nitrogen adsorption-desorption analyses, and transmission electron microscopy (TEM). The effect of some parameters such as adsorbent dosage, contact time, temperature, and pH on the TBO removal in aqueous solution was studied. Results showed that adsorption capacity raised when adsorbent dosage, contact time and pH solution were increased while an increase in temperature decreased the adsorption of TBO. Langmuir, Freundlich and Temkin isotherm models were employed to elucidate the adsorption mechanism while the adsorption rate data were analyzed according to the pseudo-first and second-order kinetic models. Results showed that adsorption of TBO onto MCM-48, SBA-15, and MCF fitted well the Freundlich isotherm model while the kinetic studies showed that adsorption process could be better described by the pseudo-second-order model for all mesoporous silicas. Finally, some solvents were evaluated to carried out dye desorption from the TBO-loaded mesoporous silicas founding that acetic acid was the most efficient. K E Y W O R D Sadsorbent, dye adsorption: MCM-41, mesocellular silica foam, mesoporous silica

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“…So far many functional groups have been used to modify the silica surface by both one-pot co-condensation and post-synthesis grafting including amine [16][17][18][19], cyano [20,21], thiol [2,[22][23][24], vinyl [25][26][27], phenyl [20,26,28], alkyl [29][30][31][32] and many others. Some studies have also focused on the functionalization with carboxylic groups [33][34][35][36][37][38]. The literature reports several methods of surface carboxylation, recently reviewed in the excellent paper [39].…”

Section: Introductionmentioning

confidence: 99%

Functionalization of mesoporous silica surface with carboxylic groups by Meldrum’s acid and its application for sorption of proteins

Barczak

2018

J Porous Mater

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A new method of silica surface functionalization with carboxyl groups is proposed based on the reaction between 2,2-dimethyl-1,3-dioxane-4,6-dione (Meldrum's acid, MA) and the surface silanol groups. For the first time such a post-synthesis modification was successfully applied to silica materials. Although silica surface is successfully carboxylated (as evidenced by FTIR and XPS), the porosity, ordering and morphology remain practically unchanged after the proposed post-synthesis treatment (as confirmed by nitrogen sorption, XRD and electron microscopy). Adsorption study of model biomolecules (lysozyme and bovine serum albumin) shows that different surface chemistries (-OH vs.-COOH) lead to different affinities between the silica surface and sorbates.

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Functionalization of cubic mesoporous silica SBA-16 with carboxylic acid via one-pot synthesis route for effective removal of cationic dyes

Cited by 123 publications

References 71 publications

Influence of bridged monomer on porosity and sorption properties of mesoporous silicas functionalized with diethylenetriamine groups

Influence of bridged monomer on porosity and sorption properties of mesoporous silicas functionalized with diethylenetriamine groups

Adsorption performance of mesoporous silicas towards a cationic dye. Influence of mesostructure on adsorption capacity

Functionalization of mesoporous silica surface with carboxylic groups by Meldrum’s acid and its application for sorption of proteins

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