Functionalized SiO2 with N-, S-containing ligands for Pb(II) and Cd(II) adsorption

Grigoropoulou, Georgia; Stathi, Panagiota; Karakassides, Michael A.; Louloudi, Maria; Deligiannakis, Y.

doi:10.1016/j.colsurfa.2008.01.007

Cited by 43 publications

(23 citation statements)

References 36 publications

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“…4) contain similar features expected of a silica containing material associated with the inorganic backbone such as (i) a large broad band between 3500 and 3200 cm −1 which is assigned to the O-H stretching mode of silanol groups and also to some adsorbed water, (ii) several absorption bands at around 1030-1240 cm −1 which can be assigned to the Si-O-Si stretching and (iii) the water bending mode band around 1650 cm −1 [23,24]. In addition to those peaks the spectrum of the as-made MCM-41 sample contained extra bands at 2850 and 2930 cm −1 which were assigned to the C-H stretching of sp 3 carbon, and a band at 1490 cm −1 was assigned to a C-N stretching mode.…”

Section: Ftir and Elemental Analysis Of Mcm-41 Samplesmentioning

confidence: 98%

Large pore diameter MCM-41 and its application for lead removal from aqueous media

Idris

Davidson

McManamon

et al. 2011

Journal of Hazardous Materials

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Section: Ftir and Elemental Analysis Of Mcm-41 Samplesmentioning

confidence: 98%

Large pore diameter MCM-41 and its application for lead removal from aqueous media

Idris

Davidson

McManamon

et al. 2011

Journal of Hazardous Materials

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“…The broad absorption band in the region 3,760−3,055 cm −1 was attributed to the stretching of Si−OH groups and the remaining physically adsorbed water molecules. The absorption bands at 1,080, 800, and 466 cm −1 were assigned to the Si-O−Si stretching [25]. The adsorption band at 1,639 cm −1 was due to bending of adsorbed water molecules.…”

Section: Characterization Of Mcm-41 and Msnzvimentioning

confidence: 99%

Facile preparation of mesoporous silica/nano zero-valent iron composite for Pb(II) removal from aqueous solution

Lü

Qiao

Wang

et al. 2016

Desalination and Water Treatment

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2015): Facile preparation of mesoporous silica/nano zero-valent iron composite for Pb(II) removal from aqueous solution, Desalination and Water Treatment, A B S T R A C TNano zero-valent iron (NZVI) particles were prone to forming aggregates owing to their intrinsic magnetism and van der Waals force. In this work, a composite material containing mesoporous silica MCM-41 and NZVI was prepared to avoid the problem of NZVI aggregation. The structures and morphologies of the as-prepared composite were confirmed using X-ray diffraction, Fourier transform infrared spectrometry, transmission electron microscopy, N 2 adsorption-desorption, and X-ray photoelectron spectroscopy techniques. It was found that NZVI particles were well dispersed in the composite, although the size of NZVI particle was larger than that of bare NZVI. Moreover, the composite was used as adsorbent for removing Pb(II) from aqueous solution at room temperature. The effects of contact time, initial solution pH, and adsorbent dosage on the removal efficiency of Pb(II) were studied using batch adsorption experiments. The results indicated the composite exhibited enhanced adsorption properties, with the maximum adsorption capacity of 416.17 mg/g for Pb(II) removal from aqueous solution. In addition, the adsorption isotherms and adsorption kinetics were also investigated systematically, it was found that the isothermal data were well fitted to Langmuir model, and the kinetic data were well suitable to pseudo-second-order kinetics model.

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“…20 69 24, e-mail: natnicvlasova@irioch.irk.ru (N N Vlasova), tel. 42 46 85, e-mail: summer2006.06@mail.ru (E N Oborina), tel. 42 75 45, e-mail: grigoreva_o@irioch.irk.ru (O Yu Grigoryeva), tel.…”

Section: Introductionmentioning

confidence: 99%

“…42 46 85, e-mail: summer2006.06@mail.ru (E N Oborina), tel. 42 75 45, e-mail: grigoreva_o@irioch.irk.ru (O Yu Grigoryeva), tel. 42 64 00, e-mail: voronkov@irioch.irk.ru (M G Voronkov) in this field of applied organosilicon chemistry before 1998 were considered in earlier reviews.…”

Section: Introductionmentioning

confidence: 99%

“…42 75 45, e-mail: grigoreva_o@irioch.irk.ru (O Yu Grigoryeva), tel. 42 64 00, e-mail: voronkov@irioch.irk.ru (M G Voronkov) in this field of applied organosilicon chemistry before 1998 were considered in earlier reviews. 8,9 The organosilicon adsorbents that are prepared by methods based on the use of anchoring compounds, which chemically link ion exchanges and complexing agents to the silica surface, or on immobilization on this surface of reactive organosilicon monomers of the general formula X 3 SiRY [X = Hal, OR H or OC(O)R H , R is divalent hydrocarbon moiety, Y is carbofunctional substituents capable to ion exchange or complexation], were surveyed in a monograph 10 under the general name`covalently modified silicas.'…”

Section: Introductionmentioning

confidence: 99%

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Organosilicon ion-exchange and complexing adsorbents

Власова¹,

Оборина²,

Grigoryeva³

et al. 2013

Russ. Chem. Rev.

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Data on the ion-exchange and complexing orga-Data on the ion-exchange and complexing organosilicon adsorbents published during the last 10 ± 12 years, nosilicon adsorbents published during the last 10 ± 12 years, including the results of systematic research of the authors, including the results of systematic research of the authors, are summarized and analyzed. The following types of are summarized and analyzed. The following types of substances are considered: silicas with covalently grafted substances are considered: silicas with covalently grafted modifiers, silicas and aluminosilicates with non-covalently modifiers, silicas and aluminosilicates with non-covalently grafted modifiers and carbofunctional polyorganylsilses-grafted modifiers and carbofunctional polyorganylsilsesquioxanes prepared by polycondensation of appropriate quioxanes prepared by polycondensation of appropriate organosilicon monomers. Adsorbents of these types find organosilicon monomers. Adsorbents of these types find extensive practical use, in particular, as analytical reagents extensive practical use, in particular, as analytical reagents for determination of metals in natural and artificial speci-for determination of metals in natural and artificial specimens, agents for isolation of valuable elements from indus-mens, agents for isolation of valuable elements from industrial wastes and agents for removal of especially hazardous trial wastes and agents for removal of especially hazardous components from wastes and effluents. The bibliography components from wastes and effluents. The bibliography includes 109 references includes 109 references. .

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Functionalized SiO2 with N-, S-containing ligands for Pb(II) and Cd(II) adsorption

Cited by 43 publications

References 36 publications

Large pore diameter MCM-41 and its application for lead removal from aqueous media

Large pore diameter MCM-41 and its application for lead removal from aqueous media

Facile preparation of mesoporous silica/nano zero-valent iron composite for Pb(II) removal from aqueous solution

Organosilicon ion-exchange and complexing adsorbents

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