Fe3O4@SiO2@PAMAM-G2 nanocomposite as sorbent for the extraction and preconcentration of estradiol valerate drug from human plasma samples

Hajizadeh, Fatemeh; Amiri, Amirhassan; Maleki, Behrooz; Zonoz, Farrokhzad Mohammadi

doi:10.1016/j.microc.2022.107176

Cited by 25 publications

(11 citation statements)

References 37 publications

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“…[ 33 ] As it is evident from Figure 1b, the new fingerprint peaks that appeared at 1101 and 935 cm −1 indicate the presence of a large number of SiOSi groups in Hercynite@SiO 2 MNPs. [ 62,63 ] Regarding the FT‐IR spectra of Hercynite@SiO 2 –Schiff base (Figure 1e), four bonds appeared at around 3428, 2823–2958, 1630, and 1603 cm −1 , which are assigned to the bending vibration of OH groups, and stretching vibrations of CH, CN, and CC groups, respectively, confirm the successful immobilization of Schiff base ligand on the surface of the silica‐modified Hercynite support. [ 65 ] It is worth mentioning that, as compared to 1,2‐bis(3‐formylphenoxy)ethane and Schiff base ligand, CO and CN stretching vibration bands disappeared or overlapped with the major SiO and SiOSi broad bands, so that they cannot be detected in this spectrum.…”

Section: Resultsmentioning

confidence: 90%

“…In the case of Schiff base ligand (Figure 1d), as compared to 1,2‐bis(3‐formylphenoxy)ethane, it was observed that characteristic bands disappeared or shifted and new peaks also appeared corresponding to azomethine and SiO bands. [ 62,63 ] In this sense, the CO peak around 1687 cm −1 disappeared, indicating that the NH 2 interacted with CO groups of the 1,2‐bis(3‐formylphenoxy)ethane. The peaks corresponding to CH stretching vibrations of n ‐propyl moiety crowded the aliphatic CH region.…”

Section: Resultsmentioning

confidence: 99%

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A novel Hercynite‐supported tetradentate Schiff base complex of manganese catalyzed one‐pot annulation reactions

Mohammadi

Ghorbani‐Choghamarani

2022

Applied Organom Chemis

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The present study is the first report on the synthesis and catalytic performance of Hercynite nanoparticles capped with a novel Schiff base–manganese(II) complex brought from a synthetic procedure. The solid support and the catalyst were characterized using various analytical techniques. The characterization results suggest excellent dispersibility, stability, high Mn content under the catalyst surface, and small size of catalyst, which leads to excellent catalytic activity and selectivity. Moreover, the catalyst proved to be sustainable and recyclable for rapid synthesis of various chromene‐ and pyran‐annulated heterocycles under ambient conditions. The effect of various crucial catalytic parameters was investigated and optimized. The scope of the reaction was extended to various aryl aldehydes and keto–enol tautomeric pairs (2‐hydroxy‐1,4‐naphthoquinone or dimedone), and the corresponding 2‐amino‐3‐cyano‐4H‐chromene and 2‐amino‐3‐cyano‐4H‐pyran products were obtained with excellent yield (82–99%) and at low reaction time (10–115 min). Significantly, the catalyst indicated magnetic, cost‐effective, and nontoxic properties, which result in having high recycling efficiency (5 cycles).

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Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%

A novel Hercynite‐supported tetradentate Schiff base complex of manganese catalyzed one‐pot annulation reactions

Mohammadi

Ghorbani‐Choghamarani

2022

Applied Organom Chemis

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“…A strong peak at 580 cm À1 , related to the vibration of the Fe-O bond, appeared in samples confirming the presence of Fe 3 O 4 core. [48][49][50] Also, the observed peaks at 1625 and 3050-3100 cm À1 , respectively, corresponded to the stretching vibration of C=C and =C-H of acrylate groups in the Fe 3 O 4 @Acrylate sample. Their intensity was dramatically decreased in the spectrum of the Fe 3 O 4 @PolyIL-AuCo sample due to participating in the copolymerization with the IL.…”

Section: Resultsmentioning

confidence: 92%

Bimetallic AuCo supported on magnetic crosslinked copoly(ionic liquid) nanohydrogel and study of its catalytic activity

Gholinejad,

Mozafari,

Nikfarjam

et al. 2023

Applied Organom Chemis

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Synergistic effects in bimetallic catalysts produce a catalyst with superior activity than a monometallic component. In this work, a novel magnetic crosslinked copoly(ionic liquid) nanohydrogel was synthesized and employed for the stabilization of AuCo bimetallic nanoparticles (Fe3O4@PolyIL‐AuCo). This material was characterized using different instrumental techniques such as FT‐IR, TGA, XPS, VSM, solid‐state UV–Vis, SEM mapping, and TEM. Results indicated a narrow size distribution of nanoparticles and high water dispersibility of Fe3O4@PolyIL‐AuCo. Using this catalyst, a series of nitroarenes were reduced to the corresponding amines in aqueous media. In addition, organic dyes were efficiently degraded by this catalyst. Different experiments dealing with the same transformation confirmed that Fe3O4@PolyIL‐AuCo exhibited higher catalytic activity than the similar monometallic Au and Co catalysts. This catalyst was recycled for at least 11 consecutive runs with very small deactivation, and TEM, VSM, and XPS confirmed the stability of the reused catalyst.

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“…The peaks at 578 and 1623 cm −1 are related to the Fe–O and hydroxyl groups on the surface of Fe 3 O 4 nanoparticles, respectively (spectrum (a)). The absorption peaks at 462, 796, and 1101 cm −1 were observed in spectrum (b), along with corresponding bending vibration mode Si-O-Si and the presence of Si–O–Si symmetrical and asymmetrical stretching vibration [ 24 , 25 ]. In addition, the peak occurring around 956 cm −1 expressed the stretching vibration absorption of Fe–O–Si, confirming that the Fe 3 O 4 @SiO 2 has been successfully prepared [ 26 ].…”

Section: Resultsmentioning

confidence: 99%

Fe3O4@SiO2@VAN Nanoadsorbent Followed by GC-MS for the Determination of Polycyclic Aromatic Hydrocarbons at Ultra-Trace Levels in Environmental Water Samples

Tian

Liu

et al. 2022

Nanomaterials

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In the present study, silica-coated magnetic nanoparticles functionalized with vancomycin (Fe3O4@SiO2@VAN) were synthesized. The Fe3O4@SiO2@VAN nanocomposite was used as a sorbent for the magnetic solid-phase extraction (MSPE) of polycyclic aromatic hydrocarbons (PAHs) from environmental water, followed by GC-MS. The nanocomposite was characterized by Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, vibrating sample magnetometry, and nitrogen sorption. Various experimental parameters were optimized, including extraction condition and desorption condition. Results show that Fe3O4@SiO2@VAN combined the advantages of nanomaterials and magnetic separation technology, showing excellent dispersibility and high selectivity for PAHs in environmental water sample. Under the optimal extraction conditions, an analytical method was established with the sensitive limit of detection (LOD) of 0.03–0.16 μg L−1. The method was successfully applied for the analysis of environmental water samples. The relative standard deviations (%) were in the range of 0.50–12.82%, and the extraction recovery (%) was in the range of 82.48% and 116.32%. MSPE-coupled gas chromatography–mass spectrometry quantification of PAHs is an accurate and repeatable method for the monitoring of PAH accumulation in environmental water samples. It also provides an effective strategy for the tracing and quantification of other environmental pollutants in complex samples.

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Fe3O4@SiO2@PAMAM-G2 nanocomposite as sorbent for the extraction and preconcentration of estradiol valerate drug from human plasma samples

Cited by 25 publications

References 37 publications

A novel Hercynite‐supported tetradentate Schiff base complex of manganese catalyzed one‐pot annulation reactions

A novel Hercynite‐supported tetradentate Schiff base complex of manganese catalyzed one‐pot annulation reactions

Bimetallic AuCo supported on magnetic crosslinked copoly(ionic liquid) nanohydrogel and study of its catalytic activity

Fe3O4@SiO2@VAN Nanoadsorbent Followed by GC-MS for the Determination of Polycyclic Aromatic Hydrocarbons at Ultra-Trace Levels in Environmental Water Samples

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