Application of MCM-41 for dyes removal from wastewater

Lee, Chung‐Kung; Liu, Shin-Shou; Juang, Lain-Chuen; Wang, Cheng-Cai; Lin, Kuen‐Song; Lyu, Meng-Du

doi:10.1016/j.jhazmat.2007.01.130

Cited by 193 publications

(72 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The main advantage of MCM-41 is that it can be regenerated by simple washing with alkaline or acid solution to recover the adsorbents and adsorbed dyes (Juang et al 2006). Only few literatures are available on the adsorption of dyes on MCM-41 synthesized at high temperature using autoclave reactor (Ho et al 2003;Juang et al 2006;Lee et al 2007). Parida and Rath (2006) have reported that the acidity of MCM-41 was increased by the incorporation of sulfate ions into the structure.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of crystal violet dye from aqueous solution using mesoporous materials synthesized at room temperature

2009

View full text Add to dashboard Cite

In this work, batch adsorption experiments are carried out for crystal violet dye using mesoporous MCM-41 synthesized at room temperature and sulfate modified MCM-41 prepared by impregnation method using H 2 SO 4 as sulfatising agent. The surface characteristics, pore structure, bonding behavior and thermal degradation of both the MCM-41 samples are characterized by nitrogen adsorption/desorption isotherms, X-ray diffraction (XRD) patterns, Fourier transform infrared (FT-IR) spectroscopy and thermo gravimetric analysis (TGA). The adsorption isotherm, kinetics and thermodynamic parameters are investigated for crystal violet (CV) dye using the calcined and sulfated MCM-41. Results are analysed using Langmuir, Freundlich and Redlich-Peterson isotherm models. It is found that the Freundlich model is an appropriate model to explain the adsorption isotherm. The highest adsorption capacity achieved is found to be 3.4 × 10 −4 mol g −1 for the sulfated MCM-41. The percentage removal of crystal violet dye increases with increase in the pH for both the MCM-41 adsorbents. Kinetics of adsorption is found to follow the second-order rate equation. From the thermodynamic investigation, it is evident that the adsorption is exothermic in nature. CVCrystal Violet CTAB Cetyltrimethylammonium Bromide TEOS Tetraethylorthosilicate a 0 Unit cell Parameter (nm)Pseudo-first-order rate constant (min −1 ) k 2 Pseudo-second-order rate constant (gmol −1 min −1 ) k d Diffusion coefficient (dimensionless) K F Freundlich isotherm constant (mol/g(dm 3 /mol) 1/n ) K L Langmuir constant (dm 3 mol −1 ) K RP Redlich-Peterson constants (mol g −1 ) m Mass of the adsorbent (g) n Adsorption intensity (dimensionless) q e Amount of dye adsorbed at equilibrium (mol g −1 ) Q max Maximum adsorption capacity (mol g −1 ) S 0 Entropy (KJ mol −1 K −1 ) S BET BET surface area (m 2 g −1 ) V Volume (dm 3 ) V mes Mesoporous volume (cm 3 g −1 )Greek letters βFull width at half maximum (degrees) θAngle of diffraction (degrees) λ Wavelength (nm) λ max Maximum absorbance wavelength (nm) Adsorption (2009) 15: 390-405 391

show abstract

Section: Introductionmentioning

confidence: 99%

Adsorption of crystal violet dye from aqueous solution using mesoporous materials synthesized at room temperature

2009

View full text Add to dashboard Cite

show abstract

“…[1][2][3][4][5][6][7] However, the design and fabrication of these multifunctional nano-sized structures is always a challenging task due to the inherent difficulties involved in a controlled assembly of the individual nano-constituents. A commonly exploited synthesis strategy involves the generation of silica-based magnetic mesoporous supports prior to the addition of a third functional component.…”

Section: Introductionmentioning

confidence: 99%

Pumping Metallic Nanoparticles with Spatial Precision within Magnetic Mesoporous Platforms: 3D Characterization and Catalytic Application

Miguel-Sancho

Martı́nez

Sebastián

et al. 2017

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

┴ Araid Foundation. KEYWORDSRecyclable, magnetically recoverable self-assembled structures, mesoporous silica, waterdispersible nanoparticles, magnetic properties, peptide-like bonding and hydrogenation. ABSTRACTThe present work shows an efficient strategy to assemble two types of functional nanoparticles onto mesoporous MCM-41 silica nanospheres with high degree of spatial precision. In a first stage, magnetite nanoparticles are synthesized with a size larger than the support pores and grafted covalently through a peptide-like bonding onto its external surface. This endowed the silica nanoparticles with a strong superparamagnetic response, while preserving the highly ordered interior space for the encapsulation of other functional guest species. Secondly, we report the finely controlled pumping of preformed Pt nanoparticles (1.5 nm) within the channels of the magnetic MCM-41 nanospheres to confer an additional catalytic functionality to the multi-assembled nanoplatform. The penetration depth of the metallic nanoparticles can be explained as a result of the interplay between particle-wall electrostatic attraction and the repulsive forces between neighbouring Pt nanoparticles. A detailed transmission electron microscopy (TEM) and 3-D HighResolution HAADF electron Tomography study was carried out to characterize the material and to explain the assembly mechanism. Finally, the performance of these multifunctional nanohybrids as magnetically recoverable catalysts has been evaluated in the selective hydrogenation of pnitrophenol, a well-known pollutant and intermediate in multiple industrial processes.3

show abstract

“…The MCM-41 material becomes very interesting to study because it was solid with pores composed of amorphous silica but has a regular structure and a uniform cavity [13][14]. The method commonly used by researchers for MCM-41 synthesis was a method with high temperature or called hydrothermally.…”

Section: Introductionmentioning

confidence: 99%

Transesterification of Used Cooking Oil Using CaO/MCM-41 Catalyst Synthesized from Lapindo Mud by Sonochemical Method

et al. 2017

View full text Add to dashboard Cite

ABSTRAK Telah dilakukan transesterifikasi minyak goreng bekas menggunakan katalis CaO/MCM-41 dari lumpur Lapindo dengan metode sonokimia. Pemisahan lumpur Lapindo dilakukan dengan metode refluks menggunakan HCl 6 M dan NaOH 6 M. Lumpur hasil refluks kemudian dianalisis dengan XRF dan digunakan sebagai sumber silika dalam sintesis MCM-41. MCM-41 disintesis dengan metode sonokimia selama 150 menit dan dianalisis menggunakan XRD, FT-IR, TEM, dan GSA. Katalis Ca diembankan pada MCM-41 menggunakan metode impregnasi basah dengan variasi pengembanan 1,15; 1,29; 2,39; dan 3,25% (b/b)

show abstract

Application of MCM-41 for dyes removal from wastewater

Cited by 193 publications

References 34 publications

Adsorption of crystal violet dye from aqueous solution using mesoporous materials synthesized at room temperature

Adsorption of crystal violet dye from aqueous solution using mesoporous materials synthesized at room temperature

Pumping Metallic Nanoparticles with Spatial Precision within Magnetic Mesoporous Platforms: 3D Characterization and Catalytic Application

Transesterification of Used Cooking Oil Using CaO/MCM-41 Catalyst Synthesized from Lapindo Mud by Sonochemical Method

Contact Info

Product

Resources

About