Detailed characteristics of adsorption of bisphenol A by highly hydrophobic MCM-41 mesoporous molecular sieves

Liu, Xingchen; Huang, Jing; Wei, Chaohai

doi:10.1007/s11164-016-2526-7

Cited by 19 publications

(10 citation statements)

References 27 publications

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“…A significant reduction in the surface area and pore volume were observed, probably due to the almost complete filling of the pores with amine functional groups. Similar results were found by Liu et all (2016), working with highly hydrophobic MCM-41 mesoporous molecular sieves [27]. The mesoporous silica R1a (Figure S2) X-ray analysis is characteristic of a material with hexagonal channel order, which is consistent with that obtained by Beck et al [28].…”

Section: Characterization Of Mesoporous Silica Materialssupporting

confidence: 89%

Comparative study of mesopourous silica obtained by different synthetic routes to improve the analysis of Cu(II) in sugar cane spirit

et al. 2020

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Mesoporous silicas have properties that allow their wide chemical application, due to the large amount of silanol groups on their walls. The possibility of introducing functional groups inside and on the surface of their pores becomes viable the use of these functionalized mesoporous materials for the adsorption of metal ions. Cooper ions are essential for vital functions, but in high concentrations, they are responsible for causing problems to the human organism. Therefore, it is important to monitor the species in different media, such as sugar cane spirit. Mesoporous materials type MCM-41 functionalized were obtained by three different methods using direct (in situ) and indirect (post-synthesis) routes. The mesoporous materials have exhibited properties according to the IUPAC classification. Modified carbon paste electrodes (MCPEs) were prepared by immobilizing the synthesized materials for Cu2+ analysis. The modified electrode obtained by the immobilization of functionalized mesoporous R2 (MCPE/R2) presented the best sensitivity for Cu2+ detection. Under optimum experimental conditions, the MCPE/R2 exhibited a linear range in between 0.99 and 11.80 μmol L-1, a sensitivity based on the Limit of Detection (LOD) of 0.50 μmol L-1and Limit of Quantification (LOQ) of 0.99 μmol L-1, precision (DPRmáx) equals to 10.6% and recovery of 92.2%. The developed method proved to be efficient for Cu2+ determination in sugar cane spirit and the accuracy of the results were comparable to those obtained by AAS.

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Section: Characterization Of Mesoporous Silica Materialssupporting

confidence: 89%

Comparative study of mesopourous silica obtained by different synthetic routes to improve the analysis of Cu(II) in sugar cane spirit

et al. 2020

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“…It could be observed that IM0.05 could adsorb BY28 efficiently even after reusing for three times. The removal percentage somewhat diminished from 88.23% in the first cycle to 78.65% in the third cycle, perhaps because during the recycling experiments, a slight remnant of the BY28 dye still existed on the IM0.05 surface [94]. Overall, the IM0.05 Table 4 Kinetic parameters for BY28 adsorption on IM0.05…”

Section: Recovery and Regeneration Of Adsorbentmentioning

confidence: 99%

Highly ordered pure and indium-incorporated MCM-41 mesoporous adsorbents: synthesis, characterization and evaluation for dye removal

et al. 2022

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Highly ordered pure MCM-41 and In-MCM-41 mesoporous adsorbents (with Si/In = 95 (IM0.05) and Si/In = 90 (IM0.1)) were synthesized using the hydrothermal-assisted method. The structural, morphological and texture characteristics were investigated by XRD, N2 adsorption–desorption, SEM-EDX, TEM, diffuse reflectance (DR) and FTIR. The broadening XRD diffraction peaks as well as the shifts to higher and lower 2-theta in IM0.05 and IM0.1, respectively, confirmed the incorporation of indium atoms in the MCM-41 structure. SEM-EXD and TEM images showed that pure MCM-41 and IM0.05 preserve a highly long-range well-ordered hexagonal pore structure, on the other hand, high loading of indium (IM0.1) resulted in partially irregular pore-ordering and morphological defects related to a partial dissolution of MCM-41 structure. The infrared spectra of In-incorporated samples showed a decrease in the transmittance intensity of MCM-41 characteristic peaks with little shifts relative to the pure MCM-41 sample. The potential of pure MCM-41 and In-MCM-41 samples for adsorption of dyes was preliminarily investigated. The removal efficiency of both methylene blue and basic yellow-28 (BY28) was enhanced by the incorporation of indium in the MCM-41. The adsorption equilibrium data of BY28 dye on pure, IM0.05 and IM0.1 samples fitted well with Langmuir adsorption model with adsorption capacity of 123.46, 156.99 and 158.48 mg g−1 respectively. The calculated free adsorption energy obtained from D–R isotherm was found to be 26.7 kJ mol−1 referring to that the adsorption of BY28 on IM0.05 adsorbent is chemical. The adsorption kinetic of BY28 on IM0.05 sample followed the pseudo-second-order model. The adsorption experiments revealed that the prepared samples can be used as effective adsorbents for the removal of dyes in aqueous solutions with good recovery and recyclability. Graphical Abstract

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“…As showed in Table 2 , the pseudo‐second‐order model, according to the R 2 value, was more appropriate for the CAPE bindings onto all the composites. The k 2 for the HKUST‐1@LC‐MIP [(0.33 ± 0.03) × 10 −3 g µmol −1 min −1 ] was higher than that of HKUST‐1@LC‐free MIP [(0.20 ± 0.01) × 10 −3 g µmol −1 min −1 ], indicating that the rate‐limiting step of controlling binding process of CAPE might not be chemisorption …”

Section: Resultsmentioning

confidence: 99%

“…The k 2 for the HKUST-1@LC-MIP [(0.33 ± 0.03) × 10 −3 g µmol −1 min −1 ] was higher than that of HKUST-1@LC-free MIP [(0.20 ± 0.01) × 10 −3 g µmol −1 min −1 ], indicating that the rate-limiting step of controlling binding process of CAPE might not be chemisorption. [51]…”

Section: Adsorption Isotherms and Kinetics Of Cape On Hkust-1@lc-mipmentioning

confidence: 99%

Preparation of Liquid Crystalline Molecularly Imprinted Polymer Coated Metal Organic Framework for Capecitabine Delivery

Zhang

Huang

et al. 2018

Part & Part Syst Charact

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A novel molecularly imprinted polymer (MIP) coated metal organic framework (MOF) containing a liquid crystalline (LC) monomer is successfully synthesized for use in drug delivery systems. In this study, [Cu3(BTC)2(H2O)3] n (HKUST‐1) is chosen as the MOF support owing to its large pore volume, good diffusion, and thermostability. 4‐Methyl phenyl dicyclohexyl ethylene (MPDE) is used as a LC monomer to increase the solvent‐responsive floating of the composite. The preparation conditions of HKUST‐1@LC‐MIP with capecitabine (CAPE) as a template, including the types of functional monomer, the ratio between template and functional monomer, as well as the content of MPDE, are investigated. Characterizations of the HKUST‐1@LC‐MIP are explored using scanning electron microscopy and transmission electron microscope images, Fourier transform infrared spectroscopy, thermal gravimetric analysis, X‐ray diffraction, and nitrogen adsorption. Compared to the HKUST‐1, the HKUST‐1@LC‐MIP shows better stability in aqueous solution. In vitro release studies of CAPE of HKUST‐1@LC‐MIP show zero‐order release of profiles at the loaded concentration of 500 µg mL−1. From in vivo pharmacokinetic studies, the HKUST‐1@LC‐MIP displays higher relative bioavailability. It turns out that the HKUST‐1@LC‐MIP possesses the properties of controlled release and has the potentials for oral administration.

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Detailed characteristics of adsorption of bisphenol A by highly hydrophobic MCM-41 mesoporous molecular sieves

Cited by 19 publications

References 27 publications

Comparative study of mesopourous silica obtained by different synthetic routes to improve the analysis of Cu(II) in sugar cane spirit

Comparative study of mesopourous silica obtained by different synthetic routes to improve the analysis of Cu(II) in sugar cane spirit

Highly ordered pure and indium-incorporated MCM-41 mesoporous adsorbents: synthesis, characterization and evaluation for dye removal

Preparation of Liquid Crystalline Molecularly Imprinted Polymer Coated Metal Organic Framework for Capecitabine Delivery

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