Attachment of linear poly(amido amine) to silica surface and evaluation of metal-binding behavior

Dey, R. K.; Patnaik, Tanushree; Singh, Varun Kumar; Swain, S. K.; Airoldi, Cláudio

doi:10.1016/j.apsusc.2009.05.037

Cited by 24 publications

(23 citation statements)

References 21 publications

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“…The bis(diazocarbonyl) compounds were supported to amino-modified silica-gel and obtained multi-functional silica-supported bis(diazoimine) ligands (L1, L2) ( Fig. 2) [16][17][18][19]28,31,35,36]. The novel silica-supported ligands (L1, L2) were characterized by solid state CP MAS 29 Si, 13 C NMR, FT-IR, elemental analysis, TG/DTA, SEM and EDX techniques.…”

Section: Synthesismentioning

confidence: 99%

Highly effective solid phase extraction of some heavy metal ions using a cartridge filled with imprinted silica-supported N4O4 type bis(diazoimine) ligands

Uruş

Purtaş

Ceyhan

et al. 2013

Separation and Purification Technology

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Section: Synthesismentioning

confidence: 99%

Highly effective solid phase extraction of some heavy metal ions using a cartridge filled with imprinted silica-supported N4O4 type bis(diazoimine) ligands

Uruş

Purtaş

Ceyhan

et al. 2013

Separation and Purification Technology

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“…The bis (diazo‐carbonyl) compounds were supported with amino‐modified silica‐gel. Therefore, multi‐functional silica‐supported bis (diazo‐azomethine) ligands, L1 and L2 (Figure ) were obtained . CP‐MAS 29 Si‐ and 13 C–NMR, FT‐IR, elemental analysis, TG/DTA, SEM and EDX were also used for characterization of these ligands, L1 and L2.…”

Section: Resultsmentioning

confidence: 99%

“…Activated silica was dried at 150 °C for 12 h. After that, 20 ml of APTES was added to the suspension and prepared by addition of 20 g of activated silica and 100 ml toluene. The reaction mixture was refluxed for 72 h. Finally, the suspension was filtered and the solid part was washed extensively with toluene, ethanol and diethylether, respectively . FT‐IR ( υ , cm −1 ): 3308 (br, Ar‐OH); 1093 (s, Si‐O) and 800 (s, Si‐O).…”

Section: Methodsmentioning

confidence: 99%

“…Quantitative analyses of metal ions in aqueous real samples is very difficult if there is high matric concentration. Due to the fact that chemically modified silica‐gels can be used as adsorbents in the extraction and separation of metal ions from water samples . In this study, the newly synthesized silica‐supported bis (diazo‐azomethine) compounds were characterized and adsorption features investigated using the cartridge and batch techniques.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, characterization and solid‐phase extraction properties of novel bis(diazo‐azomethine) ligands supported on mesoporous silica

Uruş

Karabörk

Köksal

2017

Applied Organom Chemis

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The novel mesoporous silica-supported bis(diazo-azomethine) compounds have been synthesized and characterized successively. In the first step, 1,3-phenylenedimethanamine and 4,4′-diaminodiphenylmethane were diazotized, and the obtained bis(diazonium) cations were coupled with 2,4-dihydroxybenzaldehyde. The synthesized bis(diazo-carbonyl) compounds, 5,5′-((1,3-phenylenebis(methylene))bis(diazene-2,1-diyl))bis(2,4-dihydroxybenzaldehyde) (A1) and 5,5′-((methylenebis(4,1-phenylene)) bis(diazene-2,1-diyl))bis(2,4-dihydroxybenzaldehyde) (A2) were chemically supported on amino-modified silica-gel (as L1 and L2). Elemental analysis, liquid chromatography-mass spectroscopy, liquid-phase NMR ( 1 H and 13 C) and solid-phase NMR (CP-MAS 29 Si and 13 C), FT-IR, TG/DTA, scanning electron microscopy and energy-dispersive X-ray spectroscopy techniques were used for characterizations of all the synthesized compounds. The syringe and batch techniques were applied for the solid-phase extraction properties of Pb(II), Cu(II), Cd(II) and Cr(III) ions using an inductively coupled plasma-atomic emission spectroscopy instrument. The recoveries of Pb(II), Cu(II), Cd(II) and Cr(III) ions have been achieved to 95-99% with the (RSDs) of ± 2-3% in optimum conditions.

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“…Mureseanu et al reported modified SBA-15 mesoporous silica for heavy metal ions remediation [3]. Dey et al reported attachment of linear poly(amido amine) to silica surface and evaluation of metal-binding behavior [4]. Repo et al reported removal of Co(II) and Ni(II) ions from contaminated water using silica gel functionalized with EDTA and/or DTPA as chelating agents [5].…”

Section: Introductionmentioning

confidence: 98%

Surface modification of silica gel for adsorptive removal of Ni²⁺and Cd²⁺from water

Kushwaha

Chattopadhyaya

2014

Desalination and Water Treatment

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In this study, surface of silica gel was functionalized with 1,2-ethylenediamine. The synthesized materials were characterized by Fourier transform infrared spectroscopy, scanning electron microscope, and elemental analysis. Batch adsorption studies were carried out to analyze the adsorption of nickel and cadmium ions from aqueous solutions. The factors influencing % adsorptive removal of Ni 2+ and Cd 2+ onto the silica gel and functionalized silica gel, such as initial pH value of the Ni 2+ and Cd 2+ ion solutions, adsorbent dose, initial Ni 2+ and Cd 2+ ion concentration, contact time, and temperature were investigated. Langmuir and Freundlich isotherm models were used to determine the isotherm parameters associated with the adsorption process. The monolayer adsorption capacity of ASG for Ni 2+ and Cd 2+ increased from 4.69 to 19.6 and 7.63 to 27 mg/g, respectively, after modification of activated silica gel (ASG) surface with 1,2-ethylenediamine. Kinetic data were analyzed considering pseudo-first-order and pseudo-second-order kinetic models. Adsorption of Ni 2+ and Cd 2+ on ASG followed pseudo-first-order, while on 1,2-ethylenediamine functionalized silica gel (SGAm) followed pseudo-second-order kinetics. Negative values of Gibb's free energy change (ΔG˚) showed that the adsorptions were feasible and spontaneous, and negative values of enthalpy change (ΔH˚) confirmed exothermic adsorptions.

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Attachment of linear poly(amido amine) to silica surface and evaluation of metal-binding behavior

Cited by 24 publications

References 21 publications

Highly effective solid phase extraction of some heavy metal ions using a cartridge filled with imprinted silica-supported N4O4 type bis(diazoimine) ligands

Highly effective solid phase extraction of some heavy metal ions using a cartridge filled with imprinted silica-supported N4O4 type bis(diazoimine) ligands

Synthesis, characterization and solid‐phase extraction properties of novel bis(diazo‐azomethine) ligands supported on mesoporous silica

Surface modification of silica gel for adsorptive removal of Ni²⁺and Cd²⁺from water

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Attachment of linear poly(amido amine) to silica surface and evaluation of metal-binding behavior

Cited by 24 publications

References 21 publications

Highly effective solid phase extraction of some heavy metal ions using a cartridge filled with imprinted silica-supported N4O4 type bis(diazoimine) ligands

Highly effective solid phase extraction of some heavy metal ions using a cartridge filled with imprinted silica-supported N4O4 type bis(diazoimine) ligands

Synthesis, characterization and solid‐phase extraction properties of novel bis(diazo‐azomethine) ligands supported on mesoporous silica

Surface modification of silica gel for adsorptive removal of Ni2+and Cd2+from water

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Surface modification of silica gel for adsorptive removal of Ni²⁺and Cd²⁺from water