Modification of MCM‐41 with Anionic Surfactant: A Convenient Design for Efficient Removal of Cationic Dyes from Wastewater

Abstract

The potential of MCM-41 for the removal of cationic dyes from water solution was evaluated using sodium dodecyl sulfate (SDS) for the surface modification of this mesoporous material. Admicelle structures formed on the surface of the calcined MCM-41 are capable of removing organic pollutants and cationic species from water environment. The structural, textural, and surface chemical characteristics of the prepared SDS-modified MCM-41 (SDS-MCM-41) were studied. The adsorption capacity of SDS-MCM-41 was evaluated for methylene blue (MB) as a target cationic dye. Equilibrium adsorption isotherm data were manipulated employing nonlinear regression analysis. The Langmuir, Freundlich, and Sips isotherm models were examined. The adsorption data were well fitted to both Langmuir and Sips isotherm models. The maximum adsorption capacity of SDS-MCM-41 for MB, based on Langmuir and Sips models, were 290.8 and 297.3 mg g À1 , respectively. Ethanol was found to be an effective solvent for partial regeneration of the adsorbent.

An insight into the adsorption and photocatalytic degradation of rhodamine B in periodic mesoporous materials

“…Since their discovery in 1992 [19,20], M41S mesoporous materials have attracted immense interest due to their versatile applications in various fields [21]. Among the various classes of mesoporous materials, the hexagonal forms, MCM-41 and SBA-15 materials have been extensively studied for various applications, including adsorption and/or mineralization of dyes, such as methylene blue, rhodamine B [22][23][24][25][26][27][28][29], tectilon blue [30], crystal violet [31], basic yellow 87 [32] etc. Another important class of mesoporous material is the cubic MCM-48 material.…”

Surface functionalization of mesoporous silica MCM-41 with 3-aminopropyltrimethoxysilane for dye removal: kinetic, equilibrium, and thermodynamic studies

“…Average pore diameter (nm) Mesopore volume (cm 3 [23]. The adsorption capacity of AB25 was far lower than that of MB.…”

Kinetic of Phenol Adsorption by Mesoporous MCM-41 Nanoparticles

“…Several adsorbents,for instance; activated carbon, clay andfly ashes have been extensively studied for phenol removal [6]. The mesoporousMCM-41is a promising adsorbent which offers high surface area, numerous cylindrical pore structureswith large pore volume [7,8]. Several toxic pollutants like chromium, lead and mercury etc are efficiently removed by mesoporous MCM-41 as adsorbent [9].…”