Fe loaded mesocellular silica foam: role of acid and 1,3,5-trimethylbenzene concentrations on the catalyst and its performance in the degradation of acid red B

Jamalluddin, Nur Azimah; Abdullah, Ahmad Zuhairi

doi:10.1007/s10934-015-0115-6

Cited by 1 publication

(1 citation statement)

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“…In particular, mesoporous silica materials have been widely investigated as adsorbents for organic dyes due to their high surface area, large pore volume, structural stability, and tunable nanoscale mesostructures . The specific porous structure and the excellent textual properties allow easier diffusion of target molecules into the active sites . Among these mesoporous materials, it can be found the MCM‐type, SBA‐15 and more recently the called mesocellular silica foam (MCF) .…”

Section: Introductionmentioning

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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Section: Introductionmentioning

confidence: 99%