Preparation of SBA-15 mesoporous silica grafted with bis-salicylaldehyde Schiff base for uptake of Pb(II) and Cu(II) from water

Zhang, Yuanyuan; Wu, Guohao; Yang, Ying; Sun, Jiyuan; Zhang, Dongen

doi:10.1007/s10971-020-05455-0

Cited by 15 publications

(5 citation statements)

References 50 publications

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“…In addition, in the spectrum of S-DAC, the strong peak at around 1616 cm −1 can be assigned to stretching vibrations of the carbonyl group. Also, two bands at about 1361 cm −1 and 1506 cm −1 are attributed to the ring C=C and C=N stretching vibrations, respectively [ 54 ]. Therefore, the FT-IR results suggest the successful attachment of the fluorophore onto the SBA-15 surface.…”

Section: Resultsmentioning

confidence: 99%

Coumarin derivative-functionalized nanoporous silica as an on–off fluorescent sensor for detecting Fe3+ and Hg2+ ions: a circuit logic gate

Mousavi,

Ghasemi,

Mohammadi Ziarani

et al. 2024

Discover Nano

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A highly efficient fluorescent sensor (S-DAC) was easily created by functionalizing the SBA-15 surface with N-(2-Aminoethyl)-3-Aminopropyltrimethoxysilane followed by the covalent attachment of 7-diethylamino 3-acetyl coumarin (DAC). This chemosensor (S-DAC) demonstrates selective and sensitive recognition of Fe3+ and Hg2+ in water-based solutions, with detection limits of 0.28 × 10–9 M and 0.2 × 10–9 M for Hg2+ and Fe3+, respectively. The sensor’s fluorescence characteristics were examined in the presence of various metal ions, revealing a decrease in fluorescence intensity upon adding Fe3+ or Hg2+ ions at an emission wavelength of 400 nm. This sensor was also able to detect ferric and mercury ions in spinach and tuna fish. The quenching mechanism of S-DAC was investigated using UV–vis spectroscopy, which confirmed a static-type mechanism for fluorescence quenching. Moreovre, the decrease in fluorescence intensity caused by mercury and ferric ions can be reversed using trisodium citrate dihydrate and EDTA as masking agents, respectively. As a result, a circuit logic gate was designed using Hg2+, Fe3+, trisodium citrate dihydrate, and EDTA as inputs and the quenched fluorescence emission as the output. Graphic abstract

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Section: Resultsmentioning

confidence: 99%

Coumarin derivative-functionalized nanoporous silica as an on–off fluorescent sensor for detecting Fe3+ and Hg2+ ions: a circuit logic gate

Mousavi,

Ghasemi,

Mohammadi Ziarani

et al. 2024

Discover Nano

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“…The product was purified and used further for modification of the developed magnetic material. 49–51…”

Section: Methodsmentioning

confidence: 99%

“…The product was purified and used further for modification of the developed magnetic material. [49][50][51] 2.3.4. Immobilization of SALDETA on functionalized 3D flower-like iron oxide structures.…”

Section: Instrumentationmentioning

confidence: 99%

A structurally engineered flower shaped magnetic hierarchical sorbent for rapid and selective uptake of Pb²⁺ ions from water samples

Solanki¹,

Rana²,

Kaushik³

et al. 2023

Mater. Chem. Front.

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“…Both the hydroxyl group and the aldehyde group in salicylaldehyde (SA) contain oxygen atoms which can bind to the metal ions in the solution through coordination [37][38][39][40][41][42]. SA is usually used for the modification of composite materials to improve the adsorbents performance.…”

Section: Introductionmentioning

confidence: 99%

“…SA is usually used for the modification of composite materials to improve the adsorbents performance. Zhang et al used double SA Schiff base (SBA-DSA) to modify SBA-15 mesoporous silica to adsorb and separate Cu (II) and Pb (II) ions from the aqueous solution [43]. Hussain et al prepared SA-functionalized chitosan nanoparticles as adsorbents for Cu (II), Cd (II) and Pb (II) ions [37].…”

Section: Introductionmentioning

confidence: 99%

Magnetite@poly(p-phenylenediamine) core–shell composite modified with salicylaldehyde for adsorption and separation of Mn (VII) from polluted water

Zheng

Ren²,

Wang³

et al. 2022

J Nanostruct Chem

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Fe3O4@PpPD) composite modified with salicylaldehyde (SA) was fabricated as adsorbent to remove Mn (VII) from wastewater. The Fe3O4 microspheres endow the adsorbent with the ability of rapid solid-liquid separation. The PpPD with acid and alkali resistance can protect Fe3O4 from corrosion while introducing a large amount of N atoms to adsorb Mn (VII). The introduction of SA increases the specific surface area and adsorption sites of the adsorbent. The effects of pH, time and temperature on the adsorption process were studied. At pH=2, the maximum adsorption capacity (Q) is as high as 148.34 mg g -1 , which is attributed to the complexation/chelation and electrostatic interaction between amino and hydroxyl groups and Mn (VII). It is found that the adsorption process conforms to the pseudo-second order kinetic model and Langmuir isotherm model. Thermodynamics researches demonstrate that the adsorption is a spontaneous endothermic process. After four adsorption cycle tests, the adsorption capacity losses only 1%. Moreover, high adsorption efficiency in river water and mixed metal ions solution proves that the prepared Fe3O4@PpPD-SA composite possesses excellent Q in removing Mn (VII).

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Preparation of SBA-15 mesoporous silica grafted with bis-salicylaldehyde Schiff base for uptake of Pb(II) and Cu(II) from water

Cited by 15 publications

References 50 publications

Coumarin derivative-functionalized nanoporous silica as an on–off fluorescent sensor for detecting Fe3+ and Hg2+ ions: a circuit logic gate

Coumarin derivative-functionalized nanoporous silica as an on–off fluorescent sensor for detecting Fe3+ and Hg2+ ions: a circuit logic gate

A structurally engineered flower shaped magnetic hierarchical sorbent for rapid and selective uptake of Pb²⁺ ions from water samples

Magnetite@poly(p-phenylenediamine) core–shell composite modified with salicylaldehyde for adsorption and separation of Mn (VII) from polluted water

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Preparation of SBA-15 mesoporous silica grafted with bis-salicylaldehyde Schiff base for uptake of Pb(II) and Cu(II) from water

Cited by 15 publications

References 50 publications

Coumarin derivative-functionalized nanoporous silica as an on–off fluorescent sensor for detecting Fe3+ and Hg2+ ions: a circuit logic gate

Coumarin derivative-functionalized nanoporous silica as an on–off fluorescent sensor for detecting Fe3+ and Hg2+ ions: a circuit logic gate

A structurally engineered flower shaped magnetic hierarchical sorbent for rapid and selective uptake of Pb2+ ions from water samples

Magnetite@poly(p-phenylenediamine) core–shell composite modified with salicylaldehyde for adsorption and separation of Mn (VII) from polluted water

Contact Info

Product

Resources

About

A structurally engineered flower shaped magnetic hierarchical sorbent for rapid and selective uptake of Pb²⁺ ions from water samples